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Your search keyword '"Pedrycz, Witold"' showing total 17 results
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17 results on '"Pedrycz, Witold"'

1. On Some Aspects of an Aggregation Mechanism in Face Recognition Problems

Author

Karczmarek, Paweł, Kiersztyn, Adam, Pedrycz, Witold, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Rutkowski, Leszek, editor, Scherer, Rafał, editor, Korytkowski, Marcin, editor, Pedrycz, Witold, editor, Tadeusiewicz, Ryszard, editor, and Zurada, Jacek M., editor

Published
2018
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5. Generating a hierarchical fuzzy rule-based model.

Author

Kerr-Wilson, Jeremy and Pedrycz, Witold

Subjects
*FUZZY systems, *ARCHITECTURE, *FEATURE selection, *PREDICTION models
Abstract

This study proposes a novel methodology for the extraction of a hierarchical Takagi-Sugeno fuzzy rule-based architecture from data. This architecture reduces the number and complexity of involved fuzzy rules, and, in many cases, improves the predictive performance of the model. The proposed hierarchical architecture takes the form of a cascading topology in which the predicted result computed at the previous layer is considered in the output part of the fuzzy rules. We propose a well-defined general methodology for the extraction of this hierarchical topology from data and discuss strategies for feature selection and choosing the number of rules at each level. The performance of the proposed methodology is demonstrated through extensive experiments, including case studies outlining specific behaviors and parameterizations, and comparative experiments showing the performance of the proposed architecture compared to a standard flat fuzzy rule-based system. [ABSTRACT FROM AUTHOR]

Published
2020
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6. Some new qualitative insights into quality of fuzzy rule-based models.

Author

Kerr-Wilson, Jeremy and Pedrycz, Witold

Subjects
*FUZZY systems, *MATHEMATICAL models, *KNOWLEDGE management, *GENERALIZABILITY theory, *MACHINE learning
Abstract

Rules in fuzzy rule-based models convey essential knowledge about the system under discussion. As such, they capture the essence of relationships occurring among input and output variables. While the quality of such fuzzy models is predominantly related with the accuracy and eventual interpretability of rules (although to a limited extent), the quality of rules being regarded as generic pieces of knowledge has not been studied so far. In this study, we formulate and investigate this problem by looking at the quality of rules, including aspects of (a) stability, (b) generalizability, and (c) conflict. We identify a concept of rule multiplicity, conflict, and study an emergence of rule generalization. A number of pertinent performance indices are developed, and their usage is presented through a series of experimental studies. [ABSTRACT FROM AUTHOR]

Published
2017
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7. A framework of fuzzy hybrid systems for modelling and control.

Author

Cheng, Shu, Dong, Ruijun, and Pedrycz, Witold

Subjects
HYBRID systems, FUZZY sets, FUZZY algorithms, INFORMATION measurement, SET theory
Abstract

This paper presents a new approach to modelling and control of hybrid systems with both continuous variables and discrete events. Applying the fuzzy set theory, a hierarchical fuzzy hybrid structure consisting of a fuzzy discrete event dynamic system and a continuous variable dynamic system is constructed, which not only captures the hybrid continuous/discrete dynamics but also handles the uncertainties in states and state transitions. The identification of continuous and discrete components is developed, and the hybrid control is then synthesised by fuzzy IF-THEN rules embedded in the fuzzy interface. An example of the optimisation of a production line in manufacturing shows the efficacy of the proposed approach. [ABSTRACT FROM AUTHOR]

Published
2010
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8. Enhancement of fuzzy clustering by mechanisms of partial supervision

Author

Bouchachia, Abdelhamid and Pedrycz, Witold

Subjects
*FUZZY logic, *FUZZY systems, *ALGORITHMS, *MACHINE learning
Abstract

Abstract: Semi-supervised (or partial) fuzzy clustering plays an important and unique role in discovering hidden structure in data realized in presence of a certain quite limited fraction of labeled patterns. The objective of this study is to investigate and quantify the effect of various distance functions (distances) on the performance of the clustering mechanisms. The underlying goal of endowing the clustering algorithms with a higher level of flexibility is done via the use of various distances. The enhancement of this character is evaluated by means of a comprehensive assessment of quality of clusters, their ensuing discrimination abilities and the accuracy of clusters themselves. In addition to the standard Euclidean distance being commonly exploited in fuzzy clustering, three more versatile and adaptive distance measures are considered such as its weighted version, a full adaptive distance, and a kernel-based distance. Using Fuzzy C-Means (FCM) coming in its generic format, we show its semi-supervised enhancements, derive detailed formulas and analyze their effectiveness. The improvements of semi-supervised clustering are empirically evaluated and numerically quantified with the use of several Machine Learning data sets. [Copyright &y& Elsevier]

Published
2006
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9. Epilepsy Disease Detection Using the Proposed CNN-FCM Approach

Author

Srinath, R., Gayathri, R., Shalini, C., Maragathavalli, P., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Bhattacharya, Abhishek, editor, Dutta, Soumi, editor, Dutta, Paramartha, editor, and Samanta, Debabrata, editor

Published
2024
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10. Mobile Application Control with Firebase Cloud Messaging

Author

Singh, Kamred Udham, Varshney, Neeraj, Gupta, Prinima, Kumar, Gaurav, Singh, Teekam, Dogiwal, Sanwta Ram, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Hassanien, Aboul Ella, editor, Anand, Sameer, editor, Jaiswal, Ajay, editor, and Kumar, Prabhat, editor

Published
2024
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11. A Hybrid Approach of Image Segmentation for Medical MR Images Using SMKFCM and Genetic Algorithm

Author

Mehena, J., Mishra, S., Samal, Nayan Ranjan, Pradhan, Pratap Chandra, Pattanaik, L., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Pati, Bibudhendu, editor, Panigrahi, Chhabi Rani, editor, Mohapatra, Prasant, editor, and Li, Kuan-Ching, editor

Published
2024
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12. Chatbot-Based Android Application Towards Security Using FCM

Author

Singh, Priya, Krishnamurthi, Rajalakshmi, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Roy, Nihar Ranjan, editor, Tanwar, Sudeep, editor, and Batra, Usha, editor

Published
2024
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13. Comparative Analysis of Brain Tumor Segmentation with Fuzzy C-Means Using Multicore CPU and CUDA on GPU

Author

Sahana, Sowmya, S., Narendra, V., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Tavares, João Manuel R. S., editor, Dutta, Paramartha, editor, Dutta, Soumi, editor, and Samanta, Debabrata, editor

Published
2022
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14. Modeling Control Measure Score of COVID-19 Outbreak Using Fuzzy c-Means-Based Adaptive Neuro-Fuzzy Inference System

Author

Varghese, Abraham, Kolamban, Shajidmon, Sherimon, Vinu, Lacap, Eduardo M., Jr, Ahmed, Saad Salman, Sreedhar, Jagath Prasad, Ahmed, Syed Rafeek, Al Harthy, Hasina, Al Shuaily, Huda Salim, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Joshi, Amit, editor, Mahmud, Mufti, editor, Ragel, Roshan G., editor, and Thakur, Nileshsingh V., editor

Published
2022
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15. Researcher Framework Using MongoDB and FCM Clustering for Prediction of the Future of Patients from EHR

Author

Barapatre, Harish, Sharma, Yogesh Kumar, Sarode, Julli, Shinde, Vaishali, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Balas, Valentina Emilia, editor, Semwal, Vijay Bhaskar, editor, Khandare, Anand, editor, and Patil, Megharani, editor

Published
2021
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16. Implementation of Fuzzy Clustering Algorithms to Analyze Students Performance Using R-Tool

Author

Thilagaraj, T., Sengottaiyan, N., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Peng, Sheng-Lung, editor, Son, Le Hoang, editor, Suseendran, G., editor, and Balaganesh, D., editor

Published
2020
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17. Performance Investigation of Brain Tumor Segmentation by Hybrid Algorithms

Author

Vadivel, M., Sivakumar, V. G., Vasanth, K., Ganesan, P., Thulasiprasad, S., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Saini, H. S., editor, Singh, R. K., editor, Tariq Beg, Mirza, editor, and Sahambi, J. S., editor

Published
2020
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