846 results
Search Results
2. Factors associating with or predicting more cited or higher quality journal articles: An Annual Review of Information Science and Technology (ARIST) paper.
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Kousha, Kayvan and Thelwall, Mike
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ABSTRACTING , *PUBLISHING , *READABILITY (Literary style) , *SERIAL publications , *METADATA , *BIBLIOGRAPHY , *CONFERENCES & conventions , *REGRESSION analysis , *MACHINE learning , *CITATION analysis , *INFORMATION science , *BIBLIOGRAPHICAL citations , *INTERPROFESSIONAL relations , *PERIODICAL articles , *IMPACT factor (Citation analysis) , *INFORMATION technology , *ABSTRACTING & indexing services , *MEDICAL research - Abstract
Identifying factors that associate with more cited or higher quality research may be useful to improve science or to support research evaluation. This article reviews evidence for the existence of such factors in article text and metadata. It also reviews studies attempting to estimate article quality or predict long‐term citation counts using statistical regression or machine learning for journal articles or conference papers. Although the primary focus is on document‐level evidence, the related task of estimating the average quality scores of entire departments from bibliometric information is also considered. The review lists a huge range of factors that associate with higher quality or more cited research in some contexts (fields, years, journals) but the strength and direction of association often depends on the set of papers examined, with little systematic pattern and rarely any cause‐and‐effect evidence. The strongest patterns found include the near universal usefulness of journal citation rates, author numbers, reference properties, and international collaboration in predicting (or associating with) higher citation counts, and the greater usefulness of citation‐related information for predicting article quality in the medical, health and physical sciences than in engineering, social sciences, arts, and humanities. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Biomarker Identification for Preterm Birth Susceptibility: Vaginal Microbiome Meta-Analysis Using Systems Biology and Machine Learning Approaches.
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Kulshrestha S, Narad P, Singh B, Pai SS, Vijayaraghavan P, Tandon A, Gupta P, Modi D, and Sengupta A
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- Humans, Female, Pregnancy, Biomarkers, Disease Susceptibility, Infant, Newborn, Vagina microbiology, Premature Birth microbiology, Microbiota genetics, Machine Learning, RNA, Ribosomal, 16S genetics, Systems Biology
- Abstract
Problem: The vaginal microbiome has a substantial role in the occurrence of preterm birth (PTB), which contributes substantially to neonatal mortality worldwide. However, current bioinformatics approaches mostly concentrate on the taxonomic classification and functional profiling of the microbiome, limiting their abilities to elucidate the complex factors that contribute to PTB., Method of Study: A total of 3757 vaginal microbiome 16S rRNA samples were obtained from five publicly available datasets. The samples were divided into two categories based on pregnancy outcome: preterm birth (PTB) (N = 966) and term birth (N = 2791). Additionally, the samples were further categorized based on the participants' race and trimester. The 16S rRNA reads were subjected to taxonomic classification and functional profiling using the Parallel-META 3 software in Ubuntu environment. The obtained abundances were analyzed using an integrated systems biology and machine learning approach to determine the key microbes, pathways, and genes that contribute to PTB. The resulting features were further subjected to statistical analysis to identify the top nine features with the greatest effect sizes., Results: We identified nine significant features, namely Shuttleworthia, Megasphaera, Sneathia, proximal tubule bicarbonate reclamation pathway, systemic lupus erythematosus pathway, transcription machinery pathway, lepA gene, pepX gene, and rpoD gene. Their abundance variations were observed through the trimesters., Conclusions: Vaginal infections caused by Shuttleworthia, Megasphaera, and Sneathia and altered small metabolite biosynthesis pathways such as lipopolysaccharide folate and retinal may increase the susceptibility to PTB. The identified organisms, genes, pathways, and their networks may be specifically targeted for the treatment of bacterial infections that increase PTB risk., (© 2024 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
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- 2024
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4. Spotlights are papers selected by editors published in peer‐reviewed journals that may be more regionally specific or appearing in languages other than English.
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ELECTRONIC journals , *MACHINE learning , *ENGLISH language , *HUMAN fingerprints - Abstract
This document highlights two studies published in the Asian Journal of Ecotoxicology. The first study focuses on the development of machine learning models to screen chemicals with hepatotoxicity, or liver toxicity. The models were trained using a dataset of 4014 chemicals and achieved good performance in predicting hepatotoxicity. The second study explores the use of machine learning methods to screen chemicals that induce autonomic dysfunction, a condition affecting the autonomic nervous system. The study developed a model using a dataset of 466 positive and 427 negative samples and identified structural alerts associated with autonomic dysfunction. Both studies provide valuable tools for screening and evaluating toxic chemicals. [Extracted from the article]
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- 2024
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5. Introduction to the virtual collection of papers on Artificial neural networks: applications in X‐ray photon science and crystallography.
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Ekeberg, Tomas
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ARTIFICIAL neural networks , *DEEP learning , *CRYSTALLOGRAPHY , *ARTIFICIAL intelligence , *MACHINE learning , *PHOTONS - Abstract
Artificial intelligence is more present than ever, both in our society in general and in science. At the center of this development has been the concept of deep learning, the use of artificial neural networks that are many layers deep and can often reproduce human‐like behavior much better than other machine‐learning techniques. The articles in this collection are some recent examples of its application for X‐ray photon science and crystallography that have been published in Journal of Applied Crystallography. [ABSTRACT FROM AUTHOR]
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- 2024
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6. 3‐3: Invited Paper: Prediction Model for Visual Fatigue Caused by Smartphone Display Based on EEG Multi‐dimensional Features.
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Shi, Yunyang, Tu, Yan, Wang, Lili, and Zhu, Nianfang
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FEATURE extraction ,PREDICTION models ,ELECTROENCEPHALOGRAPHY ,SMARTPHONES - Abstract
In this study, a prediction model for visual fatigue is developed. As input, frequential and nonlinear features are extracted from multichannel EEG, and then dimensionally reduced. In the model, bidirectional LSTM and attention layers are combined for effective learning. As a result, 82.90% accuracy, 85.26% weighted precision, 82.90% weighted recall, and 84.02% weighted F1‐score were obtained. [ABSTRACT FROM AUTHOR]
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- 2024
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7. 85‐1: Invited Paper: A Novel OLED Material Discovery based on AI Technology.
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Kim, Hoilim, Kim, Seran, Yoo, Dongsun, Kim, Gyeounghun, Koh, Eunkyung, Kim, Jihye, Park, Saerom, Kim, Sohae, Shin, Hyosup, Cho, Hyunguk, and Baek, Seungin
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DELAYED fluorescence ,MACHINE learning ,ARTIFICIAL intelligence ,LIGHT emitting diodes ,MOLECULAR dynamics - Abstract
We report a novel OLED material discovery process and several applications based on AI technology. This process in which six AI modules that generate molecular structures with active learning algorithm, predict multiple properties, analyze novelty, predict synthetic scheme, predict relative synthesizability and predict device characteristics are linked one after another. Also, we introduce some cases in which materials designed by this process were actually synthesized and applied to devices for evaluation to confirm the improvement of characteristics. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Guest Editorial: Artificial intelligence‐empowered reliable forecasting for energy sectors.
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Mahmoud, Karar, Guerrero, Josep M., Abdel‐Nasser, Mohamed, and Yorino, Naoto
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ENERGY industries ,ARTIFICIAL neural networks ,MACHINE learning ,FORECASTING ,QUANTILE regression ,CONVOLUTIONAL neural networks ,DEMAND forecasting - Abstract
This document is a guest editorial from the journal IET Generation, Transmission & Distribution. It discusses the use of artificial intelligence (AI) in reliable forecasting for energy sectors. The editorial highlights the challenges of integrating renewable energy sources and fluctuating electricity demand, and emphasizes the importance of accurate forecasting for system operators. The document also provides summaries of several papers included in a special issue on AI-empowered forecasting in energy sectors, covering topics such as load forecasting, wind power prediction, and control parameter optimization. The editorial concludes by recommending further research and practical implementations of AI approaches in the energy sectors. [Extracted from the article]
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- 2024
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9. Guest Editorial: Special issue on network/traffic optimisation towards 6G network.
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Logothetis, Michael, Barraca, João Paulo, Shioda, Shigeo, and Rabie, Khaled
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TELECOMMUNICATION systems ,TELECOMMUNICATION network management ,MOBILITY management (Mobile radio) ,AD hoc computer networks ,VEHICULAR ad hoc networks ,COMMUNICATION infrastructure ,MACHINE learning ,VIRTUAL networks ,TEXT messages - Abstract
This document is a guest editorial for a special issue on network/traffic optimization towards the 6G network. It highlights six research papers that focus on various topics related to network and traffic optimization in the context of 6G. These topics include hotspot performance in vehicular communication, ad-hoc networks (FANETs), cooperative relaying using MIMO-NOMA technology, network resource allocation using machine learning, cyber attacks and countermeasures in VoWi-Fi, and network management. The papers present theoretical analyses, propose novel models and schemes, and discuss practical applications and experiments. The authors express their gratitude to the researchers and reviewers involved in the publication of these papers. [Extracted from the article]
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- 2024
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10. Guest Editorial: Special issue on computational methods and artificial intelligence applications in low‐carbon energy systems.
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Wang, Yishen, Zhou, Fei, Guerrero, Josep M., Baker, Kyri, Chen, Yize, Wang, Hao, Xu, Bolun, Xu, Qianwen, Zhu, Hong, and Agwan, Utkarsha
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ARTIFICIAL intelligence ,ARTIFICIAL neural networks ,MACHINE learning ,REINFORCEMENT learning ,DEEP reinforcement learning ,DEEP learning - Abstract
This document is a guest editorial for a special issue on computational methods and artificial intelligence applications in low-carbon energy systems. The editorial highlights the urgent need for advanced computing and artificial intelligence in the clean energy transition to improve system reliability, economics, and sustainability. The special issue includes 19 original research articles covering topics such as energy forecasting, situational awareness, multi-energy system dispatch, and power system operation. The articles present state-of-the-art methods and techniques in these areas, including wind power forecasting, demand-side flexibility, fault diagnosis of photovoltaic strings, and energy management strategies. The authors express their gratitude to the participating authors and anonymous reviewers for their contributions to the special section. [Extracted from the article]
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- 2024
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11. How Interpretable Machine Learning Can Benefit Process Understanding in the Geosciences.
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Jiang, Shijie, Sweet, Lily‐belle, Blougouras, Georgios, Brenning, Alexander, Li, Wantong, Reichstein, Markus, Denzler, Joachim, Shangguan, Wei, Yu, Guo, Huang, Feini, and Zscheischler, Jakob
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MACHINE learning ,ARTIFICIAL intelligence ,EARTH currents ,ARTIFICIAL languages ,RESEARCH questions - Abstract
Interpretable Machine Learning (IML) has rapidly advanced in recent years, offering new opportunities to improve our understanding of the complex Earth system. IML goes beyond conventional machine learning by not only making predictions but also seeking to elucidate the reasoning behind those predictions. The combination of predictive power and enhanced transparency makes IML a promising approach for uncovering relationships in data that may be overlooked by traditional analysis. Despite its potential, the broader implications for the field have yet to be fully appreciated. Meanwhile, the rapid proliferation of IML, still in its early stages, has been accompanied by instances of careless application. In response to these challenges, this paper focuses on how IML can effectively and appropriately aid geoscientists in advancing process understanding—areas that are often underexplored in more technical discussions of IML. Specifically, we identify pragmatic application scenarios for IML in typical geoscientific studies, such as quantifying relationships in specific contexts, generating hypotheses about potential mechanisms, and evaluating process‐based models. Moreover, we present a general and practical workflow for using IML to address specific research questions. In particular, we identify several critical and common pitfalls in the use of IML that can lead to misleading conclusions, and propose corresponding good practices. Our goal is to facilitate a broader, yet more careful and thoughtful integration of IML into Earth science research, positioning it as a valuable data science tool capable of enhancing our current understanding of the Earth system. Plain Language Summary: Artificial Intelligence is a rapidly advancing field, in which Interpretable Machine Learning (IML) is seen as having the potential to significantly improve our understanding of Earth's complex environmental systems. IML goes beyond the predictive power of machine learning models, focusing instead on uncovering the relationships within the data that are revealed by the model's learning process. However, there is still a lack of straightforward, practical domain‐specific guidelines for geoscientists that facilitate both broader and more careful application in the field. In this paper, we aim to demonstrate the real‐world benefits of IML in typical geoscientific analysis. We provide a clear, step‐by‐step workflow that shows how IML can be used to address specific questions. We also point out some common pitfalls in using IML and offer solutions to avoid them. Our goal is to make IML more accessible and useful to a wider range of geoscientists, and we believe that IML, if used properly and thoughtfully, can become an essential and valuable tool to advance our understanding of complex Earth systems. Key Points: We demonstrate the broader relevance of Interpretable Machine Learning (IML) to most geoscientists and underexplored opportunities for its useWe describe a workflow for the effective use of IML while cautioning against potential and common pitfallsWe suggest good practices for its adoption and advocate for more careful application to ensure reliable and robust insights for the field [ABSTRACT FROM AUTHOR]
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- 2024
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12. A review of asset management using artificial intelligence‐based machine learning models: Applications for the electric power and energy system.
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Rajora, Gopal Lal, Sanz‐Bobi, Miguel A., Tjernberg, Lina Bertling, and Urrea Cabus, José Eduardo
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ARTIFICIAL intelligence ,ASSET management ,ASSET protection ,MACHINE learning ,DEEP learning ,SUSTAINABILITY - Abstract
Power system protection and asset management present persistent technical challenges, particularly in the context of the smart grid and renewable energy sectors. This paper aims to address these challenges by providing a comprehensive assessment of machine learning applications for effective asset management in power systems. The study focuses on the increasing demand for energy production while maintaining environmental sustainability and efficiency. By harnessing the power of modern technologies such as artificial intelligence (AI), machine learning (ML), and deep learning (DL), this research explores how ML techniques can be leveraged as powerful tools for the power industry. By showcasing practical applications and success stories, this paper demonstrates the growing acceptance of machine learning as a significant technology for current and future business needs in the power sector. Additionally, the study examines the barriers and difficulties of large‐scale ML deployment in practical settings while exploring potential opportunities for these tactics. Through this overview, insights into the transformative potential of ML in shaping the future of power system asset management are provided. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Nowcasting Earthquakes With Stochastic Simulations: Information Entropy of Earthquake Catalogs.
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Rundle, John B., Baughman, Ian, and Zhang, Tianjian
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EARTHQUAKES ,EARTHQUAKE aftershocks ,ENTROPY (Information theory) ,MACHINE learning ,EARTHQUAKE hazard analysis ,RECEIVER operating characteristic curves ,CATALOGS ,ENTROPY - Abstract
Earthquake nowcasting has been proposed as a means of tracking the change in large earthquake potential in a seismically active area. The method was developed using observable seismic data, in which probabilities of future large earthquakes can be computed using Receiver Operating Characteristic methods. Furthermore, analysis of the Shannon information content of the earthquake catalogs has been used to show that there is information contained in the catalogs, and that it can vary in time. So an important question remains, where does the information originate? In this paper, we examine this question using stochastic simulations of earthquake catalogs. Our catalog simulations are computed using an Earthquake Rescaled Aftershock Seismicity ("ERAS") stochastic model. This model is similar in many ways to other stochastic seismicity simulations, but has the advantage that the model has only 2 free parameters to be set, one for the aftershock (Omori‐Utsu) time decay, and one for the aftershock spatial migration away from the epicenter. Generating a simulation catalog and fitting the two parameters to the observed catalog such as California takes only a few minutes of wall clock time. While clustering can arise from random, Poisson statistics, we show that significant information in the simulation catalogs arises from the "non‐Poisson" power‐law aftershock clustering, implying that the practice of de‐clustering observed catalogs may remove information that would otherwise be useful in forecasting and nowcasting. We also show that the nowcasting method provides similar results with the ERAS model as it does with observed seismicity. Plain Language Summary: Earthquake nowcasting was proposed as a means of tracking the change in the potential for large earthquakes in a seismically active area, using the record of small earthquakes. The method was developed using observed seismic data, in which probabilities of future large earthquakes can be computed using machine learning methods that were originally developed with the advent of radar in the 1940s. These methods are now being used in the development of machine learning and artificial intelligence models in a variety of applications. In recent times, methods to simulate earthquakes using the observed statistical laws of earthquake seismicity have been developed. One of the advantages of these stochastic models is that it can be used to analyze the various assumptions that are inherent in the analysis of seismic catalogs of earthquakes. In this paper, we analyze the importance of the space‐time clustering that is often observed in earthquake seismicity. We find that the clustering is the origin of information that makes the earthquake nowcasting methods possible. We also find that a common practice of "aftershock de‐clustering", often used in the analysis of these catalogs, removes information about future large earthquakes. Key Points: Earthquake nowcasting tracks the change in the potential for large earthquakes, using information contained in seismic catalogsWe analyze the information contained in the space‐time clustering that is observed in earthquake seismicityWe find that "aftershock de‐clustering" of catalogs removes information about future large earthquakes that the nowcasting method uses [ABSTRACT FROM AUTHOR]
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- 2024
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14. Guest Editorial: Knowledge‐based deep learning system in bio‐medicine.
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Zhang, Yu‐Dong and Górriz, Juan Manuel
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DEEP learning ,SINGLE-photon emission computed tomography ,MAGNETIC particle imaging ,CONVOLUTIONAL neural networks ,MACHINE learning - Abstract
An editorial is presented on the advancements in knowledge-based deep learning systems (KDLS) in biomedicine. Topics include the application of KDLS for evaluating functional connectivity and neurological disorders, the use of deep learning for brain tumor classification and Alzheimer's disease diagnosis, and novel methods for medical image encryption and enhancement.
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- 2024
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15. Deep learning techniques for Alzheimer's disease detection in 3D imaging: A systematic review.
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Zia‐ur‐Rehman, Awang, Mohd Khalid, Ali, Ghulam, and Faheem, Muhammad
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SUPERVISED learning ,ALZHEIMER'S disease ,RECURRENT neural networks ,CONVOLUTIONAL neural networks ,DEEP learning - Abstract
Background and Aims: Alzheimer's disease (AD) is a degenerative neurological condition that worsens over time and leads to deterioration in cognitive abilities, reduced memory, and, eventually, a decrease in overall functioning. Timely and correct identification of Alzheimer's is essential for effective treatment. The systematic study specifically examines the application of deep learning (DL) algorithms in identifying AD using three‐dimensional (3D) imaging methods. The main goal is to evaluate these methods' current state, efficiency, and potential enhancements, offering valuable insights into how DL could improve AD's rapid and precise diagnosis. Methods: We searched different online repositories, such as IEEE Xplore, Elsevier, MDPI, PubMed Central, Science Direct, ACM, Springer, and others, to thoroughly summarize current research on DL methods to diagnose AD by analyzing 3D imaging data published between 2020 and 2024. We use PRISMA (Preferred Reporting Items for Systematic Reviews and Meta‐Analyses) guidelines to ensure the organization and understandability of the information collection process. We thoroughly analyzed the literature to determine the primary techniques used in these investigations and their findings. Results and Conclusion: The ability of convolutional neural networks (CNNs) and their variations, including 3D CNNs and recurrent neural networks, to detect both temporal and spatial characteristics in volumetric data has led to their widespread use. Methods such as transfer learning, combining multimodal data, and using attention procedures have improved models' precision and reliability. We selected 87 articles for evaluation. Out of these, 31 papers included various concepts, explanations, and elucidations of models and theories, while the other 56 papers primarily concentrated on issues related to practical implementation. This article introduces popular imaging types, 3D imaging for Alzheimer's detection, discusses the benefits and restrictions of the DL‐based approach to AD assessment, and gives a view toward future developments resulting from critical evaluation. [ABSTRACT FROM AUTHOR]
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- 2024
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16. MEMPSEP‐III. A Machine Learning‐Oriented Multivariate Data Set for Forecasting the Occurrence and Properties of Solar Energetic Particle Events Using a Multivariate Ensemble Approach.
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Moreland, Kimberly, Dayeh, Maher A., Bain, Hazel M., Chatterjee, Subhamoy, Muñoz‐Jaramillo, Andrés, and Hart, Samuel T.
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SOLAR energetic particles ,INTERPLANETARY magnetic fields ,SOLAR radio emission ,SPACE environment ,MACHINE learning ,CORONAL mass ejections ,SOLAR wind - Abstract
We introduce a new multivariate data set that utilizes multiple spacecraft collecting in‐situ and remote sensing heliospheric measurements shown to be linked to physical processes responsible for generating solar energetic particles (SEPs). Using the Geostationary Operational Environmental Satellites (GOES) flare event list from Solar Cycle (SC) 23 and part of SC 24 (1998–2013), we identify 252 solar events (>C‐class flares) that produce SEPs and 17,542 events that do not. For each identified event, we acquire the local plasma properties at 1 au, such as energetic proton and electron data, upstream solar wind conditions, and the interplanetary magnetic field vector quantities using various instruments onboard GOES and the Advanced Composition Explorer spacecraft. We also collect remote sensing data from instruments onboard the Solar Dynamic Observatory, Solar and Heliospheric Observatory, and the Wind solar radio instrument WAVES. The data set is designed to allow for variations of the inputs and feature sets for machine learning (ML) in heliophysics and has a specific purpose for forecasting the occurrence of SEP events and their subsequent properties. This paper describes a data set created from multiple publicly available observation sources that is validated, cleaned, and carefully curated for our ML pipeline. The data set has been used to drive the newly‐developed Multivariate Ensemble of Models for Probabilistic Forecast of SEPs (MEMPSEP; see MEMPSEP‐I (Chatterjee et al., 2024, https://doi.org/10.1029/2023SW003568) and MEMPSEP‐II (Dayeh et al., 2024, https://doi.org/10.1029/2023SW003697) for accompanying papers). Plain Language Summary: We present a new data set that uses observations from multiple spacecraft observing the Sun and the interplanetary space around it. This data is connected to the processes that create solar energetic particles (SEPs). SEP events pose threats to both astronauts and assets in space. The data set contains 252 solar flare events that caused SEPs and 17,542 that do not. For each event, we gather information about the local space environment around the sun, such as energetic protons and electrons, the conditions of the solar wind, the magnetic field, and remote solar imaging data. We use instruments from NOAA's Geostationary Operational Environmental Satellites (GOES) and the Advanced Composition Explorer spacecraft, as well as data from the Solar Dynamic Observatory, the Solar and Heliospheric Observatory, and the Wind solar radio instrument WAVES. This data set is designed to be used in machine learning (ML), with a focus on predicting the occurrence and properties of SEP events. We detail each observation obtained from publicly available sources, and the data treatment processes used to validate the reliability and usefulness for ML applications. Key Points: Machine learning oriented data set for predicting the occurance and properties of solar energetic particle eventsMultivariate remote sensing and in‐situ observationsContinuous data set spanning several decades [ABSTRACT FROM AUTHOR]
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- 2024
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17. Machine learning based fault detection technique for hybrid multi level inverter topology.
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Chappa, Anilkumar, Rao, K. Dhananjay, Dhananjaya, Mudadla, Dawn, Subhojit, Al Mansur, Ahmed, and Ustun, Taha Selim
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ELECTRIC inverters ,MACHINE learning ,ARTIFICIAL neural networks ,FEATURE extraction - Abstract
Multilevel inverters (MLIs) have a significant contribution in many industrial sectors due to their improved power quality and lesser voltage stress, over the conventional three‐level inverters. However, the implementation of MLIs with an increased device count creates the scope of development in MLIs topologies. In this regard, a hybrid MLI topology is studied in this paper whose architecture is based on conventional two‐level inverters. This topology has lesser device count characteristics when compared to conventional and most of the recently presented configurations for nine‐level output voltage generation. The major issue of capacitor voltage balancing is resolved by employing an appropriate switching strategy. However, the semiconductor switches are the most vulnerable components and causes the open circuit faults frequently that creates issues in real time operation. Hence, it is important to detect the open circuit fault in switches in the least possible time. A new approach to open circuit fault detection technique based on the analysis of load voltage waveform is proposed in this paper. The wavelet transform technique has been implemented for feature extraction of load voltage. Later, the classification of the fault has been achieved by training an artificial neural network (ANN). The proposed work has been studied in MATLAB/simulation and the obtained results are verified experimentally. [ABSTRACT FROM AUTHOR]
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- 2024
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18. An FCM based weather type classification method considering photovoltaic output and meteorological characteristics and its application in power interval forecasting.
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Zhu, Honglu, Sun, Yahui, Jiang, Tingting, Zhang, Xi, Zhou, Hai, Hu, Siyu, and Kang, Mingyuan
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PROBABILITY density function ,TECHNOLOGICAL forecasting ,FORECASTING ,DEMAND forecasting ,MACHINE learning - Abstract
With the increasing installation of photovoltaic (PV) systems, the impact of their randomness and volatility on power system has become a significant concern. To effectively quantify the uncertainty of PV output, it is crucial to develop reliable PV power interval forecasting technology. However, the complex relationship between PV output and meteorological factors makes it challenging for a single forecasting model to meet the forecasting demand. To solve this problem, this paper proposes a weather classification method that takes into account both PV output and meteorological characteristics. Initially, the relationship between PV output and meteorological factors is analyzed, and weather types are classified using fuzzy c‐means algorithm (FCM). Then, an extreme learning machine (ELM) is employed to establish point forecasting model. By combining kernel density estimation, a PV power generation interval forecasting model is derived. The results demonstrate that the FCM‐ELM model achieves higher forecasting accuracy and narrower interval width compared to traditional ELM models, with accuracy improvement of more than 2%. Additionally, the proposed method outperforms seasonal models with an accuracy improvement of more than 1%. The contribution of this paper includes identifying the limitations of traditional weather classification methods, proposing a novel multi‐model approach for PV interval forecasting. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Building Trust in AI Farming Tools.
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Joosse, Tess
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DECISION support systems ,AGRICULTURAL implements ,ARTIFICIAL intelligence ,MACHINE learning ,AGRICULTURE ,AGRICULTURAL technology ,PRECISION farming - Abstract
Precision agriculture tools like decision support systems increasingly use machine‐learning algorithms and other types of artificial intelligence (AI) to analyze large quantities of agricultural data and provide recommendations to producers and crop advisers. However, several barriers threaten adoption of these tools. Three papers in the recent Agronomy Journal special section, "Machine Learning in Agriculture," explore this phenomenon and offer solutions and opportunities for building trust in these technologies. [ABSTRACT FROM AUTHOR]
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- 2024
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20. On the practical aspects of machine learning based active power loss forecasting in transmission networks.
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Pandžić, Franko, Sudić, Ivan, Capuder, Tomislav, and Pavičić, Ivan
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MACHINE learning ,ARTIFICIAL neural networks ,INDEPENDENT system operators ,LITERATURE reviews ,FEEDFORWARD neural networks ,BOOSTING algorithms ,OPERATING costs - Abstract
The cost for covering active power losses makes a significant item in transmission system operators (TSO) annual budgets, and still it received limited attention in the existing literature. The focus of accurate power loss forecasting and procurement is of high increase during the past 2 years due to spikes in electricity prices, making the cost of covering the active power losses a dominant factor of TSO operational costs. This paper presents practical aspects of the highly accurate models for transmission loss forecast in the day ahead time frame for the Croatian transmission system. The contributions are two‐fold: 1) Practical insights into usable TSO data are provided, filling a critical research gap and a foundational literature review is established on transmission loss forecasting. 2) A novel method utilizing only electricity transit data as input which outperforms existing practices is presented. For this, several algorithms such as gradient boosted decision tree model (XGB), support vector regressors, multiple linear regression and fully connected feedforward artificial neural networks are developed, and implemented and validated on data obtained from the Croatian TSO. The results show that the XGB model outperforms current TSO model by 32% for 4 months of comparison and TSCNET's commercial solution by 25% during a year‐long testing period. The developed XGB model is also implemented as a software tool and put into everyday operation with the Croatian TSO. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Unsupervised Machine Learning‐Derived Anion‐Exchange Membrane Polymers Map: A Guideline for Polymers Exploration and Design.
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Phua, Yin Kan, Terasoba, Nana, Tanaka, Manabu, Fujigaya, Tsuyohiko, and Kato, Koichiro
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POLYMERIC membranes ,POLYOLEFINS ,POLYMERS ,PRINCIPAL components analysis ,MACHINE learning ,FUEL cells - Abstract
Although anion‐exchange membranes (AEMs) are commonly used in fuel cells and water electrolyzers, their widespread commercialization is hindered by problems such as low anion conductivity and durability. Moreover, the development of high‐performance AEMs remains complex and time consuming. Here, we address these challenges by proposing an innovative approach for the efficient design and screening of AEM polymers using unsupervised machine learning. Our model, which combines principal component analysis with uniform manifold approximation and projection, generates an intuitive map that clusters AEM polymers based on structural similarities without any predefined knowledge regarding anion conductivity or other experimentally derived variables. As a powerful navigation tool, this map provides insights into promising main‐chain structures, such as poly(arylene alkylene)s with consistently high conductivity and polyolefins with exceptional performance depending on the substituent. Furthermore, assisted by key molecular descriptors, inverse analysis with this model allows targeted design and property prediction before synthesis, which will significantly accelerate the discovery of novel AEM polymers. This work represents a paradigm shift not only in AEM research but also generally in materials research, moving from black‐box predictions toward interpretable guidelines that foster collaboration between researchers and machine learning for efficient and informed material development. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Anomaly detection in network traffic with ELSC learning algorithm.
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Khan, Muhammad Muntazir, Rehman, Muhammad Zubair, Khan, Abdullah, and Abusham, Eimad
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COMPUTER network traffic ,MACHINE learning ,INTRUSION detection systems (Computer security) ,ANOMALY detection (Computer security) ,BOOSTING algorithms ,TELECOMMUNICATION systems - Abstract
In recent years, the internet has not only enhanced the quality of our lives but also made us susceptible to high‐frequency cyber‐attacks on communication networks. Detecting such attacks on network traffic is made possible by intrusion detection systems (IDS). IDSs can be broadly divided into two groups based on the type of detection they provide. According to the established rules, the first signature‐based IDS detects threats. Secondly, anomaly‐based IDS detects abnormal conditions in the network. Various machine and deep learning approaches have been used to detect anomalies in network traffic in the past. To improve the detection of anomalies in network traffic, researchers have compared several machine learning models, such as support vector machines (SVM), logistic regressions (LRs), K‐Nearest Neighbour (KNN), Nave Bayes (NBs), and boosting algorithms. The accuracy, precision, and recall of many studies have been satisfactory to an extent. Therefore, this paper proposes an ensemble learning‐based stacking classifier (ELSC) to achieve a better accuracy rate. In the proposed ELSC algorithm, KNN, NB, LR, and Decision Trees (DT) served as the base classifiers, while SVM served as the meta classifier. Based on a Network Intrusion detection dataset provided by Kaggle.com, ELSC is compared to base classifiers such as KNN, NB, LR, DT, SVM, and Linear Discriminate Analysis. As a result of the simulations, the proposed ELBS stacking classifier was found to outperform the other comparative models and converge with an accuracy of 99.4%. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Increasing the Reproducibility and Replicability of Supervised AI/ML in the Earth Systems Science by Leveraging Social Science Methods.
- Author
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Wirz, Christopher D., Sutter, Carly, Demuth, Julie L., Mayer, Kirsten J., Chapman, William E., Cains, Mariana Goodall, Radford, Jacob, Przybylo, Vanessa, Evans, Aaron, Martin, Thomas, Gaudet, Lauriana C., Sulia, Kara, Bostrom, Ann, Gagne, David John, Bassill, Nick, Schumacher, Andrea, and Thorncroft, Christopher
- Subjects
EARTH system science ,SUPERVISED learning ,ARTIFICIAL intelligence ,SOCIAL science research ,ARTIFICIAL hands - Abstract
Artificial intelligence (AI) and machine learning (ML) pose a challenge for achieving science that is both reproducible and replicable. The challenge is compounded in supervised models that depend on manually labeled training data, as they introduce additional decision‐making and processes that require thorough documentation and reporting. We address these limitations by providing an approach to hand labeling training data for supervised ML that integrates quantitative content analysis (QCA)—a method from social science research. The QCA approach provides a rigorous and well‐documented hand labeling procedure to improve the replicability and reproducibility of supervised ML applications in Earth systems science (ESS), as well as the ability to evaluate them. Specifically, the approach requires (a) the articulation and documentation of the exact decision‐making process used for assigning hand labels in a "codebook" and (b) an empirical evaluation of the reliability" of the hand labelers. In this paper, we outline the contributions of QCA to the field, along with an overview of the general approach. We then provide a case study to further demonstrate how this framework has and can be applied when developing supervised ML models for applications in ESS. With this approach, we provide an actionable path forward for addressing ethical considerations and goals outlined by recent AGU work on ML ethics in ESS. Plain Language Summary: Artificial intelligence and machine learning can make it hard to do science in a way that can be repeated. This can mean redoing a study in the exact same way to see if you can get the same or similar results (reproducibility) or trying to use the same study design on a new problem to see if the results are the same or similar (replicability). These types of scientific repetitions is important for developing robust knowledge, but is hard to do with certain types of machine learning that rely on data that were categorized by researchers. The researchers have to make decisions and categorize their data, which the machine learning algorithm then uses as a guide to make its own decisions. Generally, there is not enough information shared by the researchers about how these decisions were made to repeat the science or evaluate how good it is. In this paper, we provide a way to address these shortcomings. The approach and example we offer illustrates how to (a) create a rulebook that can be shared for how to make decisions and (b) quantitatively measure how consistent the researchers are at using that rulebook to make their decisions. Key Points: We provide a rigorous hand labeling procedure to improve the replicability and reproducibility of supervised machine learning (ML)Our case study and step‐by‐step guide clearly outline how the procedure can be appliedThe procedure is an actionable path forward for addressing ethical considerations and goals for ML development in Earth systems science [ABSTRACT FROM AUTHOR]
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- 2024
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24. Prediction of Solar Coronal Structures Using Fourier Neural Operators Based on the Solar Photospheric Magnetic Field Observation.
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Zhao, Jingmin and Feng, Xueshang
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SOLAR photosphere ,SPACE environment ,MACHINE learning ,SOLAR magnetic fields ,CORONAL mass ejections ,SOLAR wind ,SOLAR corona - Abstract
This paper constructs the structures of the solar corona (SC) using Fourier neural operators (FNO) based on solar photospheric magnetic field observation. The purpose is to learn the mapping between two infinite‐dimensional function spaces, which takes the photospheric magnetic field as input and the magnetohydrodynamic (MHD) solar wind plasma parameters as output, from a finite collection of input‐output pairs. The FNO‐SC model is established using MHD simulated results of 36 Carrington rotations (CRs) from 2008, 2009, and 2020. The performance of the FNO‐SC model is tested for 6 CRs during various phases of the solar activity such as descending, minimum, and ascending phases to generate the 3D structures of the SC. With the MHD simulations as references, the average structure similarity index measure (SSIM) value for the magnetic field topology from 1 to 3Rs is around 0.88. From 1 to 20Rs, the SSIM values for the number density and radial speed surpass 0.9. Relative to OMNI observations, the mean absolute percentage error for the radial speed generated from the FNO‐SC model does not exceed 0.25. These results indicate that the FNO‐SC model effectively captures the solar coronal structures typical of the periods investigated, by recovering the MHD simulations as well as the observations. The FNO‐SC model is further trained with enriched data from the maximum phase to assess the capability of modeling such a situation. The FNO‐SC model costs 48.7 s for a single CR prediction, and thus facilitates real‐time space weather forecasting. Plain Language Summary: The adverse weather in the solar‐terrestrial space, driven by large solar eruptions such as flares and coronal mass ejections, poses significant threats and potential losses to human society. Thus, studying the background solar wind, the propagation medium of solar eruptions, is crucial for rapidly forecasting space weather. This paper constructs a solar coronal structures model using Fourier neural operators based on the solar photospheric magnetic field observation. The results indicate that the established model effectively captures the observed features around descending, minimum, and ascending phases. The proposed machine learning based model is a promising surrogate for real‐time forecasting. Key Points: We establish a solar coronal model with Fourier neural operators so as to construct the solar coronal structuresThe model is trained by data from three‐dimensional magnetohydrodynamic (MHD) simulated results with the solar photospheric magnetic field observation as inputModeled results are validated by the comparison among observation, MHD simulated results of solar corona [ABSTRACT FROM AUTHOR]
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- 2024
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25. Optimizing Metro Passenger Flow Prediction: Integrating Machine Learning and Time-Series Analysis with Multimodal Data Fusion.
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Li Wan, Wenzhi Cheng, and Jie Yang
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URBAN transit systems ,TIME series analysis ,MULTISENSOR data fusion ,MACHINE learning ,HILBERT-Huang transform ,DATA analysis ,PUBLIC transit - Abstract
Accurate passenger flow forecasting is crucial in urban areas with growing transit demand. In this paper, we propose a method that combines advanced machine learning with rigorous time series analysis to improve prediction accuracy by integrating different datasets, providing a prescriptive example for passenger flow prediction in urban rail transit systems. The study employs advanced machine learning algorithms and proposes a novel prediction model that combines two-stage decomposition (seasonal and trend decomposition using LOESS–ensemble empirical mode decomposition (STL-EEMD)) and gated recurrent units. First, the STL decomposition algorithm is applied to break down the preprocessed data into trend terms, periodic terms, and irregular fluctuation terms. Then, the EEMD decomposition algorithm is employed to further decompose the irregular fluctuation terms, yielding multiple IMF components and residual residuals. Subsequently, the decomposed data from STL and EEMD are partitioned into training and test sets and normalized. The training set is utilized to train the model for optimal performance in predicting subway short-time passenger flow. The synthesis of these sophisticated methodologies serves to substantially enhance both the predictive precision and the broad applicability of the forecasting models. The efficacy of the proposed approach is rigorously evaluated through its application to empirical metro passenger flow datasets from diverse urban centers, demonstrating marked superiority in predictive performance over traditional forecasting methods. The insights gleaned from this study bear significant ramifications for the strategic planning and administration of public transportation infrastructures, potentially leading to more strategic resource allocation and an enhanced commuter experience. [ABSTRACT FROM AUTHOR]
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- 2024
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26. QoE-driven multi-UAV deployment scheme for emergency communication networks.
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Haibo Dai, Yinghui Ju, Yiqun Liang, Zhe Zhang, Hao Xu, and Baoyun Wang
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MACHINE learning ,TELECOMMUNICATION systems ,DISTRIBUTED algorithms ,COMMUNICATION infrastructure ,GAME theory - Abstract
When ground communication infrastructure within a region cannot be used for some reason, deploying unmanned aerial vehicle (UAV)- mounted base stations is undoubtedly the most effective way to provide communication services. This paper investigates the problem of joint deployment and power allocation of multiple UAVs, where ground terminals (GTs) seek to maximize quality of experience (QoE). In the mixed line-of-sight and non-line-of-sight environment, UAVs need to change position in order to collect channel information until deployment problem is solved. Moreover, only neighboring UAVs communicate with each other, which makes the problem more difficult to solve. In order to solve this problem, game theory is used to model this problem and design a distributed learning algorithm to maximize the QoE of all GTs in the entire system. Simulation results validate the effectiveness of the proposed learning algorithm in improving the QoE fairness and achieving the rapid deployment of UAVs. [ABSTRACT FROM AUTHOR]
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- 2024
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27. Prediction of Atmospheric Profiles With Machine Learning Using the Signature Method.
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Fujita, M., Sugiura, N., and Kouketsu, S.
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MACHINE learning ,WATER vapor ,WATER temperature ,RAINFALL ,ATMOSPHERIC models ,ATMOSPHERIC water vapor measurement - Abstract
An array of atmospheric profile observations consists of three‐dimensional vectors representing pressure, temperature, and humidity, with each profile forming a continuous curve in this three‐dimensional space. In this paper, the Signature method, which can quantify a profile's curve, was adopted for the atmospheric profiles, and the accuracy of profile representations was investigated. The description of profiles by the signature was confirmed with adequate accuracy. The machine‐learning‐based model, developed using the signature, exhibited a high level of annual accuracy with minimal absolute mean differences in temperature and water vapor mixing ratio (<2.0 K or g kg−1). Notably, the model successfully captured the vertical structure and atmospheric instability, encompassing drastic variations in water vapor and temperature, even during intense rainfall. These results indicate the Signature method can comprehensively describe the vertical profile with information on how ordered values are correlated. This concept would potentially improve the representation of the atmospheric vertical structure. Plain Language Summary: The atmospheric profile can be visualized as a three‐dimensional curve representing pressure, temperature, and humidity. By utilizing the Signature method, we can measure and quantify the profile's curve, allowing for comprehensive modeling of the atmosphere. In this paper, we confirmed the accuracy of atmospheric profile representation using signatures and introduced the characteristics of signatures revealed through machine‐learning models. The description of profiles by the signature was confirmed with adequate accuracy. Moreover, the model demonstrated robust annual accuracy, with minimal temperature and water vapor discrepancies. It effectively captured the vertical structure and instability of the atmosphere, even during heavy rainfall, characterized by significant temperature and water vapor content fluctuations. Key Points: The utilization possibility of the Signature method for atmospheric profiles was confirmedBy utilizing the Signature method, we can measure and quantify the profile's curve, allowing for comprehensive modeling of the atmosphereThe machine‐learning model developed with the signature can predict the profiles with high annual accuracy [ABSTRACT FROM AUTHOR]
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- 2024
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28. A comprehensive review on enhancing wind turbine applications with advanced SCADA data analytics and practical insights.
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Pandit, Ravi and Wang, Jianlin
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WIND turbines ,MACHINE learning ,DECISION support systems ,GRAPHICAL user interfaces ,OFFSHORE wind power plants ,DATA integrity - Abstract
The aim of this study is to explore the potential and economic benefits of utilising Supervisory Control and Data Acquisition (SCADA) data to improve wind turbine operation and maintenance activities. The review identifies a gap in the current understanding of how to effectively use SCADA data in wind turbine applications. It emphasises the need for pre‐processing SCADA data to ensure data integrity by addressing outliers and employing interpolation techniques. Additionally, it highlights the challenges associated with early fault detection methods using SCADA data, including the development of physical models, data‐driven machine learning models, and statistical regression models. The review also recognises the limitations caused by the lack of public data from wind turbine developers and the imbalance between normal operation data samples and abnormal data samples, negatively impacting model accuracy. The key findings of the review demonstrate that SCADA data‐driven techniques can lead to significant improvements in wind turbine operations and maintenance. The application of data‐driven technologies based on SCADA data has proven effective in reducing operation and maintenance costs and enhancing wind power generation. Moreover, the development of robust decision support systems using SCADA data minimises the need for frequent maintenance interventions in offshore wind farms. To bridge the gap and further enhance wind turbine applications using SCADA data, several recommendations are provided. These include encouraging greater openness in sharing SCADA data to improve the robustness and accuracy of AI models, adopting transfer learning techniques to overcome the scarcity of quality datasets, establishing unified standards and taxonomies, and providing specialised resources such as software applications with interactive graphical user interfaces for easier storage, annotation, and analysis of SCADA data. The authors' review paper identifies a gap in the current understanding of how to effectively utilise SCADA data in wind turbine applications. It emphasises the importance of pre‐processing SCADA data to ensure data integrity by addressing outliers and employing interpolation techniques. Furthermore, the authors highlight the challenges associated with early fault detection methods using SCADA data, including the development of physical models, data‐driven machine learning models, and statistical regression models. Our review paper identifies a gap in the current understanding of how to effectively utilize SCADA data in wind turbine applications. It emphasizes the importance of pre‐processing SCADA data to ensure data integrity by addressing outliers and employing interpolation techniques. Furthermore, we highlight the challenges associated with early fault detection methods using SCADA data, including the development of physical models, data‐driven machine learning models, and statistical regression models. [ABSTRACT FROM AUTHOR]
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- 2024
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29. FY‐4A/AGRI Infrared Brightness Temperature Estimation of Precipitation Based on Multi‐Model Ensemble Learning.
- Author
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Wang, Gen, Han, Wei, Ye, Song, Yuan, Song, Wang, Jing, and Xie, Feng
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TYPHOONS ,BRIGHTNESS temperature ,MACHINE learning ,PRECIPITATION gauges ,INFRARED radiation ,PRECIPITATION (Chemistry) - Abstract
Satellite infrared detectors cannot penetrate clouds, especially precipitating clouds. Improving precipitation estimation accuracy based on infrared brightness temperature has always been important but challenging. In this paper, based on the infrared brightness temperature of the Advanced Geosynchronous Radiation Imager (AGRI) onboard China's Feng‐Yun 4A satellite, we develop and evaluate a new precipitation estimation method. First, using static data, physical characteristics of clouds, cloud image texture features, temporal motion features, and AGRI infrared channel brightness temperature, we construct features for a machine learning model. Then, we develop precipitation estimation methods. Precipitation is estimated in two steps: classification and regression. We employ a random forest classification model to identify whether there is precipitation in a given field of view. If there is precipitation, a multi‐model ensemble regression learning method is used to estimate the areas with this precipitation. The ensemble learning method uses convex optimization to integrate prediction results based on the optimization of hyperparameters of five basic models (i.e., those of random forest, XGBoost, LightGBM, decision tree, and extra tree models). Furthermore, two regression stacking ensemble models—the Least Absolute Shrinkage and Selection Operator (herein referred to as Stacking1‐LASSO) and K‐nearest neighbor (herein referred to as Stacking2‐KNN)—are used to predict the results of the aforementioned basic models. The results of basic models are used as inputs of these two stacking models. Finally, based on the Integrated Multi‐satellitE Retrievals for GPM (IMERG) precipitation product and rain gauge precipitation data, we conduct precipitation estimation experiments and evaluate our methods. The results show that ensemble learning models have greater accuracy in estimating precipitation than the basic models. When using IMERG precipitation as the target precipitation, ensemble learning models can estimate the central area of heavy precipitation during typhoons Ampil and Maria. The ensemble learning estimation effect is better than that of Stacking2‐KNN. Moreover, when rain gauge data is used as the target precipitation, ensemble learning can also estimate the center of heavy precipitation and with good consistency with recorded satellite brightness temperature data. Key Points: A convex optimization weighted and stacked ensemble learning method for satellite data estimation of precipitation is developedNear real‐time precipitation estimates can be obtained throughout the day using only geographic information and Advanced Geosynchronous Radiation Imager infrared brightness temperature dataThe proposed ensemble learning method can estimate the central areas of typhoons and short‐term heavy rainfall [ABSTRACT FROM AUTHOR]
- Published
- 2024
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30. Artificial intelligence in cosmetic dermatology.
- Author
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Kania, Barbara, Montecinos, Karen, and Goldberg, David J.
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COSMETIC dermatology ,ARTIFICIAL intelligence ,PATIENT experience ,PATIENT satisfaction ,PERSONAL beauty - Abstract
Background: Cosmetic dermatology is a growing field as more patients are seeking treatments for esthetic concerns. Traditionally, practitioners and patients utilize their own perceptions, current beauty standards, and manual observation to determine their satisfaction with cosmetic interventions. Artificial intelligence (AI) can be introduced into cosmetic dermatology to provide objective data‐driven recommendations to both dermatologists and patients. Objective: The purpose of this paper is to compose a unified review that illustrates the various facets of artificial intelligence and formulate a hypothesis regarding the new implications of artificial intelligence in cosmetic dermatology specifically. Methods: A comprehensive search on PubMed was conducted to identify the available information related to AI in cosmetic dermatology. The search was conducted using a combination of keywords including "cosmetic dermatology" and "artificial intelligence." Results: The current literature indicates that AI models offer personalized, efficient, and result‐driven outputs that can enhance cosmetic outcomes, patient satisfaction, and overall experience. Conclusion: Artificial intelligence integration in cosmetic dermatology shows a promising future, offering the ability to analyze vast data sets and deliver a tailored patient experience. By incorporating AI into cosmetic dermatology, there is an opportunity to balance evidence‐based decision‐making with the artistic human touch of cosmetic dermatologists. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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31. Large language models and artificial intelligence: the coming storm for academia.
- Author
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Murali, Mayur and Wiles, Matthew D.
- Subjects
- *
GENERATIVE artificial intelligence , *NATURAL language processing , *LANGUAGE models , *MACHINE learning , *ARTIFICIAL intelligence - Abstract
The article explores the use of large language models (LLMs) and artificial intelligence (AI) in academia and research. LLMs are AI programs that can generate content in response to human language questions and have various applications in research. While LLMs offer benefits such as improved productivity, they also pose risks, including the potential for fraudulent research papers. Journals have implemented policies to address the use of AI in manuscripts, and efforts are being made to detect papers with unacknowledged LLM use. However, detecting AI-generated text can be challenging for human reviewers, and current software programs designed to detect AI-generated text have variable performance. The academic publishing industry is working on developing its own AI detectors, but their availability is limited. Ensuring the appropriate use of AI in research is crucial for maintaining the integrity of healthcare research. [Extracted from the article]
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- 2024
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32. Fault diagnosis of power equipment based on variational autoencoder and semi‐supervised learning.
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Ye, Bo, Li, Feng, Zhang, Linghao, Chang, Zhengwei, Wang, Bin, Zhang, Xiaoyu, and Bodanbai, Sayina
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FAULT diagnosis ,MACHINE learning ,POWER transmission ,WIND turbines ,PROBLEM solving ,SUPERVISED learning - Abstract
Summary: The issue of fault diagnosis in power equipment is receiving increasing attention from scholars. Due to the important role played by bearings in power equipment, bearing faults have become the main factor causing the shutdown of wind turbines units. Therefore, this paper takes bearing equipment as an example for research. In order to solve the problem of insufficient and unbalanced fault sample data of wind turbines bearings, a fault diagnosis (FD) method based on variational autoencoder and semi‐supervised learning is proposed in this paper. Firstly, based on Label Propagation‐random forests (LP‐RFs) and a small number of labeled fault samples, a semi‐supervised learning algorithm is proposed to label the original data samples. Secondly, a small number of training samples are preprocessed by the variational autoencoder to reduce the imbalance of the fault samples. Then, the RFs‐based method is adopted to train the processed fault samples to obtain a mature FD classifier. Finally, the proposed method is applied to FD for bearings, and the results show that the proposed method can realize bearings fault diagnosis (BFD). And meanwhile, the proposed method can also be applied for fault diagnosis in power transmission and transformation systems. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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33. Synthetic Aperture Radar for Geosciences.
- Author
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Meng, Lingsheng, Yan, Chi, Lv, Suna, Sun, Haiyang, Xue, Sihan, Li, Quankun, Zhou, Lingfeng, Edwing, Deanna, Edwing, Kelsea, Geng, Xupu, Wang, Yiren, and Yan, Xiao‐Hai
- Subjects
- *
SYNTHETIC aperture radar , *MACHINE learning , *SURFACE of the earth , *ENVIRONMENTAL sciences , *DEEP learning - Abstract
Synthetic Aperture Radar (SAR) has emerged as a pivotal technology in geosciences, offering unparalleled insights into Earth's surface. Indeed, its ability to provide high‐resolution, all‐weather, and day‐night imaging has revolutionized our understanding of various geophysical processes. Recent advancements in SAR technology, that is, developing new satellite missions, enhancing signal processing techniques, and integrating machine learning algorithms, have significantly broadened the scope and depth of geosciences. Therefore, it is essential to summarize SAR's comprehensive applications for geosciences, especially emphasizing recent advancements in SAR technologies and applications. Moreover, current SAR‐related review papers have primarily focused on SAR technology or SAR imaging and data processing techniques. Hence, a review that integrates SAR technology with geophysical features is needed to highlight the significance of SAR in addressing challenges in geosciences, as well as to explore SAR's potential in solving complex geoscience problems. Spurred by these requirements, this review comprehensively and in‐depth reviews SAR applications for geosciences, broadly including various aspects in air‐sea dynamics, oceanography, geography, disaster and hazard monitoring, climate change, and geosciences data fusion. For each applied field, the scientific advancements produced because of SAR are demonstrated by combining the SAR techniques with characteristics of geophysical phenomena and processes. Further outlooks are also explored, such as integrating SAR data with other geophysical data and conducting interdisciplinary research to offer comprehensive insights into geosciences. With the support of deep learning, this synergy will enhance the capability to model, simulate, and forecast geophysical phenomena with greater accuracy and reliability. Plain Language Summary: Synthetic aperture radar (SAR) uses microwaves to remotely see the Earth's surface under all weather conditions, day and night. SAR has been providing high‐resolution images for many decades and they have been applied to many fields in geosciences. Several SAR sensors have been launched in recent years, significantly increasing the SAR data volume and leading to great developments in SAR technology, thereby improving our understanding of geophysical phenomena and processes. This work comprehensively overviews the application of SAR in geosciences, including oceanography, geography, geodesy, climatology, seismology, meteorology, and environmental science. Moreover, this review paper highlights the significance of SAR in various aspects of geosciences, summarizes recent advancements in SAR technology, and demonstrates unique insights and important contributions of SAR in understanding and solving geophysical questions. Future directions and outlooks include integrating SAR with other geophysical data and interdisciplinary applications for complex questions. This review serves as an up‐to‐date guide to the cutting‐edge uses of SAR technology in comprehensive geophysical studies. It is aimed at researchers and practitioners in geosciences, as well as policymakers and stakeholders interested in leveraging SAR for geosciences. Key Points: Synthetic Aperture Radar (SAR) for geosciences is comprehensively reviewed broadly including oceanography, geography, hazards, and climate changeScientific advances contributed by SAR techniques for each topic are overviewed in‐depth with recent developments and frontiers highlightedData, techniques, and scientific insights of SAR are summarized and prospected, highlighting the role of machine learning [ABSTRACT FROM AUTHOR]
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- 2024
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34. Comprehensive review of hydrothermal liquefaction data for use in machine‐learning models.
- Author
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Haarlemmer, Geert, Matricon, Lucie, and Roubaud, Anne
- Subjects
- *
BIOMASS liquefaction , *SCIENTIFIC literature , *HYDROTHERMAL deposits , *SEWAGE sludge , *DATABASES , *ORGANIC wastes , *LIGNOCELLULOSE - Abstract
Hydrothermal liquefaction is a new, sustainable pathway to generate biogenic liquids from organic resources. The technology is compatible with a wide variety of resources such as lignocellulosic resources, organic waste, algae, and sewage sludge. The chemistry is complex and predictions of yields are notoriously difficult. Understanding and modeling of hydrothermal liquefaction is currently mostly based on a simplified biochemical analysis and product yield data. This paper presents a large dataset of 2439 experiments in batch reactors that were extracted from 171 publications in the scientific literature. The data include biochemical composition data such as fiber content and composition, proteins, lipids, carbohydrates, and ash. The experimental conditions are recorded for each experiment as well as the reported yields. The objective of this paper is to make a large database available to the scientific community. This database is analyzed with machine‐learning tools. The results show that there is no consensus on the analysis techniques, experimental procedures, and reported data. There are many inconsistencies across the literature that should be improved by the scientific community. Machine‐learning tools with a large dataset allow the generation of reliable yield production tools with a large application field. Given the accuracy of the data, the overall precision of prediction in an extrapolation to new results can be expected to be around 10%. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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35. Data‐driven plasma science: A new perspective on modeling, diagnostics, and applications through machine learning.
- Author
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He, Mengbing, Bai, Ruihang, Tan, Shihao, Liu, Dawei, and Zhang, Yuantao
- Subjects
- *
ATMOSPHERIC pressure plasmas , *PLASMA diagnostics , *PLASMA dynamics , *PLASMA confinement , *MACHINE learning - Abstract
This paper comprehensively explores the integration of machine learning (ML) with atmospheric pressure plasma, highlighting its transformative impact in areas, such as modeling, diagnostics, and applications. The paper delves into the application of neural networks and deep learning models in simulating complex plasma dynamics, enhancing prediction accuracy, and reducing computational demands. We also examine the application of ML in plasma diagnostics, including real‐time data analysis and process optimization, demonstrating advancements in monitoring and controlling plasma systems. The article discusses the challenges encountered in this integration process, such as data quality, computational resources, and model interpretability. Finally, we outline future development directions, emphasizing the potential of ML in revolutionizing plasma research, improving operational efficiency, and opening new avenues in plasma technology. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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36. Statistical inference for generative adversarial networks and other minimax problems.
- Author
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Meitz, Mika
- Subjects
- *
GENERATIVE adversarial networks , *MACHINE learning , *INFERENTIAL statistics , *PROBABILISTIC generative models - Abstract
This paper studies generative adversarial networks (GANs) from the perspective of statistical inference. A GAN is a popular machine learning method in which the parameters of two neural networks, a generator and a discriminator, are estimated to solve a particular minimax problem. This minimax problem typically has a multitude of solutions and the focus of this paper are the statistical properties of these solutions. We address two key statistical issues for the generator and discriminator network parameters, consistent estimation and confidence sets. We first show that the set of solutions to the sample GAN problem is a (Hausdorff) consistent estimator of the set of solutions to the corresponding population GAN problem. We then devise a computationally intensive procedure to form confidence sets and show that these sets contain the population GAN solutions with the desired coverage probability. Small numerical experiments and a Monte Carlo study illustrate our results and verify our theoretical findings. We also show that our results apply in general minimax problems that may be nonconvex, nonconcave, and have multiple solutions. [ABSTRACT FROM AUTHOR]
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- 2024
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37. Environmental data and scores: Lost in translation.
- Author
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Bernardini, Enrico, Fanari, Marco, Foscolo, Enrico, and Ruggiero, Francesco
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SUSTAINABLE investing ,INVESTORS ,INVESTMENT analysis ,PORTFOLIO management (Investments) ,DISEASE risk factors ,ENVIRONMENTAL reporting - Abstract
This paper investigates methodological issues and limited coverage of providers' environmental scores, which are increasingly employed by investors, financial institutions and policymakers for corporate environmental assessment. The contribution of the paper is twofold. First, regression analysis shows a substantial heterogeneity among the environmental scores of seven providers in the reliance on raw data. However, as some variables are found meaningful across providers, the request to enhance disclosure should focus on such variables. The heterogeneity of the unexplained component of the regression across providers can be arguably referred to as judgemental factors and underlines the providers' different focus on financial risk or environmental impact. Second, we propose a classification system based on corporate disclosure data that aims to enable investors to extend the environmental assessment of companies not rated by providers. This system has been calibrated to implement two common investment strategies, that is, best‐in‐class and exclusion and allows to build portfolios with both environmental and financial profiles similar to portfolios based on providers' scores. The work aims to contribute to the intersection between the analysis of methodologies of E‐scores and their practical use for investment purposes. Rather than asking for a mirage of full comparability of E‐scores, the paper substantiates that is of utmost importance to improve the disclosure of corporate data to enhance the environmental assessment as well as the transparency on providers' methodologies to enable investors to select E‐scores consistent with their risk‐impact preferences. Such transparency will foster the development of sustainable finance. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
38. Integration of artificial intelligence with medical diagnostic sonography.
- Author
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Boman, R., Penkala, S., Chan, R. H. M., Joshua, F., and Cheung, R. T. H.
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HEALTH services accessibility ,DIAGNOSTIC imaging ,MELANOMA ,MATERNAL health services ,ARTIFICIAL intelligence ,PATIENT care ,ULTRASONIC imaging ,ATHEROSCLEROSIS ,ALLIED health personnel ,TELEMEDICINE ,COMPUTER-aided diagnosis ,RURAL conditions ,METROPOLITAN areas ,RESOURCE-limited settings ,MACHINE learning ,MEDICAL screening - Abstract
Rapid changes in artificial intelligence (AI) have already impacted the medical field. While the use of AI to assist medical diagnosis has been documented, AI is continually expanding within medical applications. AI applications in sonography and their effect on ultrasound examinations and sonographers are still indeterminate. Six papers were reviewed to investigate AI applications and effects within the sonography field. These papers provided results on a range of ultrasound applications including breast, obstetric, skin lesions, carotid, blood flow and cardiac ultrasound imaging when combined with AI. In this narrative review, the application of AI demonstrated that accuracy and speed of clinical diagnosis can be improved. These six aspects of ultrasound imaging combined with AI demonstrated the potential to assist the operator and clinicians with a diagnosis in various applications and settings. Additionally, AI can be beneficial to telehealth applications for rural and remote areas where healthcare access can be limited. These changes are opportunities to assist with medical care to provide benefits to patients, sonographers and clinicians as AI transitions to a positive integration within many aspects of clinical care. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
39. BPNN‐based flow classification and admission control for software defined IIoT.
- Author
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Wang, Cheng, Xue, Hai, and Huan, Zhan
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SOFTWARE-defined networking ,INTELLIGENT networks ,BACK propagation ,MACHINE learning ,INTERNET of things - Abstract
Flow admission control (FAC) aims to efficiently manage the service requests while maximizing the network utilization. With multiple connection requests, access delay or even service interruption may occur. This paper proposes a novel FAC approach to reduce the contention between the end nodes and ensure high utilization of the networking resources for software defined IIoT. First, incoming flows are classified into different priorities using back propagation neural network based on selected features representing the current network status. Second, with the designed flow admission policies, bandwidth and buffer size are estimated with stochastic network calculus model. Finally, the thresholds of the proposed FAC scheme are dynamically decided based on the above two parameters. Various flows are admitted or rejected via the proposed FAC to maintain real time processing. Unlike traditional FAC schemes rely on static priority systems, the proposed scheme leverages machine learning technique for dynamic flow prioritization and the stochastic network calculus model for precise estimation. Computer simulation reveals that the proposed scheme accurately classifies the flows, and substantially decreases the transmission delay and improves the network utilization compared to the existing FAC schemes. This highlights the superiority of the proposed scheme meeting the demands of software defined IIoT. [ABSTRACT FROM AUTHOR]
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- 2024
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40. Forecasting healthcare service volumes with machine learning algorithms.
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Yang, Dong‐Hui, Zhu, Ke‐Hui, and Wang, Ruo‐Nan
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MACHINE learning ,PATIENT satisfaction ,GROSS domestic product ,ONLINE education ,PHYSICIANS - Abstract
As an efficacious solution to remedying the imbalance of medical resources, the online medical platform has burgeoned expeditiously. Apt allotment of medical resources on the medical platform can facilitate patients in reasonably selecting physicians and time slots, coordinating doctors' clinical arrangements, and generating precise projections of medical platform service volume to enhance patient satisfaction and alleviate physicians' workload. To this end, grounded in the data‐driven method, this paper assembles an exhaustive feature set encompassing hospital features, physician features, and patient features. Through feature selection, appropriate features are screened, and machine learning algorithms are leveraged to accurately forecast doctors' online consultation volume. Subsequently, to glean the influence relationship between online medical services and offline medical services, this paper introduces features of offline medical services such as hospital registration volume and regional gross domestic product (GDP) to solve the prediction of offline medical service volume using online medical information. The findings signify that online data feature prediction can pinpoint superior machine learning models for online medical platform service volume (with the optimal accuracy up to 96.89%). Online features exert a positive effect on predicting offline medical service volume, but the accuracy declines to some degree (the optimal accuracy is 73%). Physicians with favorable reputations on the online platform are more susceptible to attain higher offline appointment volumes when online consultation volume is a vital feature impacting offline appointment volume. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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41. Unlocking the potential: A review of artificial intelligence applications in wind energy.
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Dörterler, Safa, Arslan, Seyfullah, and Özdemir, Durmuş
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ARTIFICIAL neural networks , *ARTIFICIAL intelligence , *WIND power , *ENERGY industries , *RENEWABLE energy sources - Abstract
This paper presents a comprehensive review of the most recent papers and research trends in the fields of wind energy and artificial intelligence. Our study aims to guide future research by identifying the potential application and research areas of artificial intelligence and machine learning techniques in the wind energy sector and the knowledge gaps in this field. Artificial intelligence techniques offer significant benefits and advantages in many sub‐areas, such as increasing the efficiency of wind energy facilities, estimating energy production, optimizing operation and maintenance, providing security and control, data analysis, and management. Our research focuses on studies indexed in the Web of Science library on wind energy between 2000 and 2023 using sub‐branches of artificial intelligence techniques such as artificial neural networks, other machine learning methods, data mining, fuzzy logic, meta‐heuristics, and statistical methods. In this way, current methods and techniques in the literature are examined to produce more efficient, sustainable, and reliable wind energy, and the findings are discussed for future studies. This comprehensive evaluation is designed to be helpful to academics and specialists interested in acquiring a current and broad perspective on the types of uses of artificial intelligence in wind energy and seeking what research subjects are needed in this field. [ABSTRACT FROM AUTHOR]
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- 2024
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42. The PIM.3 process improvement process—Part of the iNTACS certified process expert training.
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Messnarz, Richard, Djordjevic, Vesna, Grémen, Viktor, Menezes, Winifred, Alborae, Ahmed, Dreves, Rainer, Norimatsu, So, Wegner, Thomas, and Sechser, Bernhard
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PROCESS capability , *MACHINE learning , *APPRAISERS , *INTERNET security , *ENGINEERING - Abstract
This paper documents the results of the PIM.3 (Process Improvement Management) working group in INTACS (International Assessor Certification Schema) supported by the VDA‐QMC (Verband der Deutschen Automobilindustrie/German Automotive Association–Quality Management Center). INTACS promotes Automotive SPICE, which is an international standard that allows process capability assessment of projects, which implement systems that integrate mechanics, electronics, and software including optionally cybersecurity, functional safety, and machine learning. The paper outlines that for the first time since more than 20 years, the INTACS and VDA‐QMC included a process like PIM.3 Process Improvement Management in the scope for the assessor training. Before that, the assessments focused on the management, engineering, and support processes of series projects, while the improvement management has not been trained or assessed. [ABSTRACT FROM AUTHOR]
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- 2024
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43. Applying machine learning to primate bioacoustics: Review and perspectives.
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Cauzinille, Jules, Favre, Benoit, Marxer, Ricard, and Rey, Arnaud
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BIG data , *ANIMAL communication , *COMPARATIVE linguistics , *BIOACOUSTICS , *SIGNAL processing , *DEEP learning , *MACHINE learning - Abstract
This paper provides a comprehensive review of the use of computational bioacoustics as well as signal and speech processing techniques in the analysis of primate vocal communication. We explore the potential implications of machine learning and deep learning methods, from the use of simple supervised algorithms to more recent self‐supervised models, for processing and analyzing large data sets obtained within the emergence of passive acoustic monitoring approaches. In addition, we discuss the importance of automated primate vocalization analysis in tackling essential questions on animal communication and highlighting the role of comparative linguistics in bioacoustic research. We also examine the challenges associated with data collection and annotation and provide insights into potential solutions. Overall, this review paper runs through a set of common or innovative perspectives and applications of machine learning for primate vocal communication analysis and outlines opportunities for future research in this rapidly developing field. [ABSTRACT FROM AUTHOR]
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- 2024
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44. Composite learning control for strict feedback systems with neural network based on selective memory.
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Hu, Zhiyu, Fei, Yiming, Li, Jiangang, and Li, Yanan
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MACHINE learning , *RADIAL basis functions , *FEEDBACK control systems , *NONLINEAR equations , *INFORMATION storage & retrieval systems , *ITERATIVE learning control - Abstract
This paper addresses the high‐precision control problem for nonlinear strict feedback systems with external time‐varying disturbances and proposes a novel composite learning control algorithm. Unlike previous research that only uses tracking errors for neural network updates, this paper prioritizes the accuracy of neural network learning. The article uses a selective memory recursive least squares algorithm to construct system information prediction errors, which are combined with tracking errors to update the neural network weights. A new composite learning control algorithm is developed to design dynamic surface control and neural network disturbance observers, which achieves high‐precision control of nonlinear strict feedback systems under external time‐varying disturbance conditions. Lyapunov's method demonstrates the stability of the closed‐loop system and the boundedness of errors. The simulation results show that the proposed control algorithm can effectively estimate system nonlinearity and suppress the impact of disturbances. [ABSTRACT FROM AUTHOR]
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- 2024
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- View/download PDF
45. Scoping review on natural language processing applications in counselling and psychotherapy.
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Laricheva, Maria, Liu, Yan, Shi, Edward, and Wu, Amery
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NATURAL language processing , *COUNSELING , *PSYCHOTHERAPY , *LINGUISTICS , *MACHINE learning - Abstract
Recent years have witnessed some rapid and tremendous progress in natural language processing (NLP) techniques that are used to analyse text data. This study endeavours to offer an up‐to‐date review of NLP applications by examining their use in counselling and psychotherapy from 1990 to 2021. The purpose of this scoping review is to identify trends, advancements, challenges and limitations of these applications. Among the 41 papers included in this review, 4 primary study purposes were identified: (1) developing automated coding; (2) predicting outcomes; (3) monitoring counselling sessions; and (4) investigating language patterns. Our findings showed a growing trend in the number of papers utilizing advanced machine learning methods, particularly neural networks. Unfortunately, only a third of the articles addressed the issues of bias and generalizability. Our findings provided a timely systematic update, shedding light on concerns related to bias, generalizability and validity in the context of NLP applications in counselling and psychotherapy. [ABSTRACT FROM AUTHOR]
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- 2024
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46. From hype to insight: Exploring ChatGPT's early footprint in education via altmetrics and bibliometrics.
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Wong, Lung‐Hsiang, Park, Hyejin, and Looi, Chee‐Kit
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GENERATIVE artificial intelligence , *SERIAL publications , *EDUCATIONAL outcomes , *TEACHING methods , *INFORMATION resources , *DESCRIPTIVE statistics , *CITATION analysis , *ALTMETRICS , *BIBLIOMETRICS , *MEDICAL research , *LITERATURE reviews , *COMPUTER assisted instruction , *MACHINE learning - Abstract
Background: The emergence of ChatGPT in the education literature represents a transformative phase in educational technology research, marked by a surge in publications driven by initial research interest in new topics and media hype. While these publications highlight ChatGPT's potential in education, concerns arise regarding their quality, methodology, and uniqueness. Objective: Our study employs unconventional methods by combining altmetrics and bibliometrics to explore ChatGPT in education comprehensively. Methods: Two scholarly databases, Web of Science and Altmetric, were adopted to retrieve publications with citations and those mentioned on social media, respectively. We used a search query, "ChatGPT," and set the publication date between November 30th, 2022, and August 31st, 2023. Both datasets were within the education‐related domains. Through a filtering process, we identified three publication categories: 49 papers with both altmetrics and citations, 60 with altmetrics only, and 66 with citations only. Descriptive statistical analysis was conducted on all three lists of papers, further dividing the entire collection into three distinct periods. All the selected papers underwent detailed coding regarding open access, paper types, subject domains, and learner levels. Furthermore, we analysed the keywords occurring and visualized clusters of the co‐occurring keywords. Results and Conclusions: An intriguing finding is the significant correlation between media/social media mentions and academic citations in ChatGPT in education papers, underscoring the transformative potential of ChatGPT and the urgency of its incorporation into practice. Our keyword analysis also reveals distinctions between the themes of the papers that received both mentions and citations and those that received only citations but no mentions. Additionally, we noticed a limitation that authors' choice of keywords might be influenced by individual subjective judgements, potentially skewing results in thematic analysis based solely on author‐assigned keywords such as keyword co‐occurrence analysis. Henceforth, we advocate for developing a standardized keyword taxonomy in the educational technology field and integrating Large Language Models to enhance keyword analysis in altmetric and bibliometric tools. This study reveals that ChatGPT in education literature is evolving from rapid publication to rigorous research. Lay Description: What is currently known about this topic?: ChatGPT in education has seen a surge in publications driven by media hype.Early publications tend to lack rigour and reiterate known advantages/disadvantages.Literature reviews on ChatGPT in education have limitations in scope and depth.Some studies have explored altmetrics and bibliometrics in other fields. What does this paper add?: Combines altmetrics and bibliometrics to analyse publications of ChatGPT in education.Addresses challenges in the discourse by offering unconventional analysis methods.Identifies publication trends and investigates the relationship between media attention and citations.Determines key themes in the literature through keyword co‐occurrence analysis. Implications for practice/or policy: Expectations of continued growth in ChatGPT literature but with evolving publication trends.Distinctive characteristics of ChatGPT in education challenge keyword analysis.Proposes the development of a unified keyword taxonomy for clarity in the field.Suggests enhancing altmetrics and bibliometrics tools using Large Language Models. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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47. Review on machine learning techniques for the assessment of the fatigue response of additively manufactured metal parts.
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Centola, Alessio, Tridello, Andrea, Ciampaglia, Alberto, Berto, Filippo, and Paolino, Davide Salvatore
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- *
ALLOY fatigue , *MACHINE learning , *ARTIFICIAL neural networks , *ALLOYS , *SELECTIVE laser melting - Abstract
The present review paper addresses the increasing interest in the application of machine learning (ML) algorithms in the assessment of the fatigue response of additively manufactured (AM) metal alloys. This review aims to systematically collect, categorize, and analyze relevant research papers in this domain. The most commonly used ML algorithms are presented, discussing their specific relevance to the fatigue modeling of AM metal alloys. A detailed analysis of the most relevant input features used in the literature to predict the main parameters related to the fatigue response is provided. Each work has been analyzed to highlight its strengths and peculiarities, thereby offering insights into novel methodologies and approaches for addressing critical challenges within this field. Particular attention is dedicated to the role of defects and the related size‐effect, as they strongly influence the fatigue response. In conclusion, this review not only synthesizes existing knowledge but also offers forward‐looking recommendations for future research directions, providing a valuable resource for researchers in the domain of ML‐assisted fatigue assessment for AM metal alloys. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
48. A review of ADHD detection studies with machine learning methods using rsfMRI data.
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Taspinar, Gurcan and Ozkurt, Nalan
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MACHINE learning ,FUNCTIONAL magnetic resonance imaging ,ATTENTION-deficit hyperactivity disorder ,DEEP learning ,FEATURE selection - Abstract
Attention deficit hyperactivity disorder (ADHD) is a common mental health condition that significantly affects school‐age children, causing difficulties with learning and daily functioning. Early identification is crucial, and reliable and objective diagnostic tools are necessary. However, current clinical evaluations of behavioral symptoms can be inconsistent and subjective. Functional magnetic resonance imaging (fMRI) is a non‐invasive technique that has proven effective in detecting brain abnormalities in individuals with ADHD. Recent studies have shown promising outcomes in using resting state fMRI (rsfMRI)‐based brain functional networks to diagnose various brain disorders, including ADHD. Several review papers have examined the detection of other diseases using fMRI data and machine learning or deep learning methods. However, no review paper has specifically addressed ADHD. Therefore, this study aims to contribute to the literature by reviewing the use of rsfMRI data and machine learning methods for detection of ADHD. The study provides general information about fMRI databases and detailed knowledge of the ADHD‐200 database, which is commonly used for ADHD detection. It also emphasizes the importance of examining all stages of the process, including network and atlas selection, feature extraction, and feature selection, before the classification stage. The study compares the performance, advantages, and disadvantages of previous studies in detail. This comprehensive approach may be a useful starting point for new researchers in this area. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Frequency control using fuzzy active disturbance rejection control and machine learning in a two‐area microgrid under cyberattacks.
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Rahnamayian Jelodar, Soheil, Heidary, Jalal, Rahmani, Reza, Vahidi, Behrooz, and Askarian‐Abyaneh, Hossein
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OPTIMIZATION algorithms ,RENEWABLE energy sources ,FUZZY control systems ,HEURISTIC algorithms ,MACHINE learning ,CYBER physical systems - Abstract
There is a change in the traditional power system structure as a result of the increased incorporation of microgrids (MGs) into the grid. Multi‐area MGs will emerge as a result, and issues related to them will need to be addressed. Load frequency control (LFC) is a challenge in such structures, which are more complicated due to variations in demand and the stochastic characteristics of renewable energy sources. This paper presents a cascade fuzzy active disturbance rejection control technique to deal with the LFC problem. In order to tune different parameters of controllers, a newly developed heuristic algorithm called the Gazelle optimization algorithm (GOA) is also employed. Moreover, due to the fact that multi‐area MGs are regarded as cyber‐physical systems (CPSs), a relatively new concern for LFC problems is their resilience to cyberattacks such as false data injection (FDI) and denial of service (DoS) attacks. Therefore, this research also presents a novel machine learning approach called parallel attack resilience detection system (PARDS) to deal with the LFC problem in the presence of cyberattacks. The efficiency of the proposed strategy is investigated under different scenarios, such as non‐linearities in the power system or server cyberattacks. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. Comment on "Prediction of the SYM‐H Index Using a Bayesian Deep Learning Method With Uncertainty Quantification" by Abduallah et al. (2024).
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Collado‐Villaverde, Armando, Muñoz, Pablo, and Cid, Consuelo
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ARTIFICIAL neural networks ,GRAPH neural networks ,DEEP learning ,MAGNETIC storms ,PREDICTION models - Abstract
Abduallah et al. (2024b, https://doi.org/10.1029/2023sw003824) proposed a novel approach using a deep neural network model, which includes a graph neural network and a bidirectional LSTM layer, named SYMHnet, to forecast the SYM‐H index one and 2 hr in advance. Additionally, the network also provides an uncertainty quantification of the predictions. While the approach is innovative, there are some areas where the model's design and implementation may not align with best practices in uncertainty quantification and predictive modeling. We focus on discrepancies in the input and output of the model, which can limit the applicability in real‐world forecasting scenarios. This comment aims to clarify these issues, offering detailed insights into how such discrepancies could compromise the model's interpretability and reliability, thereby contributing to the advancement of predictive modeling in space weather research. Plain Language Summary: The use of Machine learning to predict geomagnetic storms is becoming a trend. A recent study by Abduallah et al. (2024b, https://doi.org/10.1029/2023sw003824) introduces a novel approach to forecast the SYM‐H index, which measures geomagnetic activity on a global scale, while also quantifying the uncertainty of these predictions. However, this commentary highlights methodological concerns with their approach, such as data selection issues and the reliability of uncertainty calculations. These factors could significantly affect the model's accuracy and applicability in real‐time forecasting scenarios. Key Points: Examination of the model input and output reveals oversights that could undermine the model's predictive accuracy and applicabilityThe process to estimate uncertainty has limited applicability for use in real timeThere are no coverage metrics regarding the uncertainty intervals [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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