197 results on '"Chen, Zhen-Song"'
Search Results
152. An enhanced ordered weighted averaging operators generation algorithm with applications for multicriteria decision making
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Chen, Zhen-Song, Yu, Cheng, Chin, Kwai-Sang, and Martínez, Luis
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- 2019
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153. An Uncertain and Preference Evaluation Model with Basic Uncertain Information in Educational Management
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Zhu, Cheng, primary, Zhang, Er Zi, primary, Wang, Zhen, primary, Yager, Ronald R., primary, Chen, Zhi Song, primary, Jin, Le Sheng, primary, and Chen, Zhen-Song, primary
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- 2020
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154. Evaluation and Selection of HazMat Transportation Alternatives: A PHFLTS- and TOPSIS-Integrated Multi-Perspective Approach
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Chen, Zhen-Song, primary, Li, Min, additional, Kong, Wen-Tao, additional, and Chin, Kwai-Sang, additional
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- 2019
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155. Intuitionistic Fuzzy Multiple Criteria Group Decision Making: A Consolidated Model With Application to Emergency Plan Selection
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Chang, Jian-Peng, primary, Chen, Zhen-Song, additional, Xiong, Sheng-Hua, additional, Zhang, Jun, additional, and Chin, Kwai-Sang, additional
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- 2019
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156. Paradigm Shift Toward Aggregation Strategies in Proportional Hesitant Fuzzy Multi-Criteria Group Decision Making Models of Advanced Practice for Selecting Electric Vehicle Battery Supplier
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Chang, Jian-Peng, primary, Chen, Zhen-Song, additional, Liu, Xiao-Lu, additional, Kong, Wen-Tao, additional, Xiong, Sheng-Hua, additional, and Martinez, Luis, additional
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- 2019
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157. Customizing Semantics for Individuals With Attitudinal HFLTS Possibility Distributions
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Chen, Zhen-Song, primary, Chin, Kwai-Sang, additional, Martinez, Luis, additional, and Tsui, Kwok-Leung, additional
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- 2018
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158. Corrigendum to “Proportional hesitant fuzzy linguistic term set for multiple criteria group decision making”[Information Sciences 357 (2016) 61–87]
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Chen, Zhen-Song, Yang, Yi, Chin, Kwai-Sang, and Li, Yan-Lai
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- 2017
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159. Dual Consensus Measure for Multi-perspective Multi-criteria Group Decision Making
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Palomares, Ivan, primary, Crosscombe, Michael, additional, Chen, Zhen-Song, additional, and Lawry, Jonathan, additional
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- 2018
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160. Sustainable supplier selection using two-phase QFD and TOPSIS within PD-HFLTS context
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Chen, Zhen-Song, primary
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- 2018
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161. Individual Semantics Building for HFLTS Possibility Distribution With Applications in Domain-Specific Collaborative Decision Making
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Chen, Zhen-Song, primary, Xu, Mei, additional, Wang, Xian-Jia, additional, Chin, Kwai-Sang, additional, Tsui, Kwok-Leung, additional, and Martinez, Luis, additional
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- 2018
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162. On Generalized Extended Bonferroni Means for Decision Making
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Chen, Zhen-Song, primary, Chin, Kwai-Sang, additional, Li, Yan-Lai, additional, and Yang, Yi, additional
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- 2016
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163. On Extending Power-Geometric Operators to Interval-Valued Hesitant Fuzzy Sets and Their Applications to Group Decision Making
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Xiong, Sheng-Hua, primary, Chen, Zhen-Song, additional, Li, Yan-Lai, additional, and Chin, Kwai-Sang, additional
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- 2016
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164. Triangular intuitionistic fuzzy random decision making based on combination of parametric estimation, score functions, and prospect theory
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Chen, Zhen-Song, primary, Chin, Kwai-Sang, additional, Ding, Heng, additional, and Li, Yan-Lai, additional
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- 2016
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165. Dechlorination test of modified calcium-based sorbent in a dual-layer granular bed filter
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Huang San, Tan Jun-jun, Sheng Wei-peng, Yang Guo-hua, Yu Jian-wei, Chen Zhen-song, and Fei Hong-jia
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Sorbent ,Chromatography ,Chemistry ,law ,Chlorine ,Dual layer ,chemistry.chemical_element ,Calcium ,Hydrate ,Filtration ,Nuclear chemistry ,Filter (aquarium) ,law.invention - Abstract
The dechlorination test of modified calcium-based sorbent and that of unmodified calcium-based sorbent were compared in a small-scale dual-layer granular bed filter in order to investigate the calcium utilization and dechlorination efficiency. The results showed that the activity of modified calcium-based dechlorinating agent hydrate was greatly increased. When Ca/Cl=2.5, the dechlorination efficiency reached 99% at 600°C, and 80% at 500°C and 700°C, which was significantly higher than that of general sorbent Ca(OH) 2 . The calcium utilization of modified calcium-based sorbent was 42.4% at 500°C, 53.8% at 600°C, and 45.7% at 700°C, while that of general calcium-based sorbent was only 36.8% at 600°C.
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- 2011
166. Influencing factors of mercury removal by pure powdered activated carbon on a bag filter
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Yu Jian-wei, Tan Jun-jun, Yang Guo-hua, Huang San, Sheng Wei-peng, and Chen Zhen-song
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Powdered activated carbon treatment ,endocrine system diseases ,Waste management ,education ,chemistry.chemical_element ,humanities ,Mercury (element) ,Adsorption ,chemistry ,Mercury adsorption ,health services administration ,Fly ash ,Volume fraction ,medicine ,Bag filter ,Nuclear chemistry ,Activated carbon ,medicine.drug - Abstract
In order to improve the Hg0 removal efficiency and utilization of powdered activated carbon (PAC) of the traditional mercury removal technology which applies activated carbon injection based on a bag filter, a new mercury removal technology with pure PAC on a bag filter was put forward in the present study. Mercury removal experiments were conducted on a small-scale bag filter test bed with pure PAC as the absorbent. The results indicated that the average mercury removal efficiency (AMRE) within the first 65 min decreased from 99.6% to 43.2% when the adsorption temperature increased from 80°C to 170ଌ and increased from 75.5% to 84.6% when the volume fraction of H 2 O (g) increased from 0% to 8% at 100°C, but it decreased when the H 2 O (g) content further increased to 12%. The AMRE increased with the increase of the pure PAC load and decrease of the filtration velocity of the bag filter. When the adsorption temperature was 80°C, the AMRE with pure PAC and that with a mixture of 5% PAC and 95% fly ash within the first 85 minutes were respectively 99.1% and 59.6%. When the mercury removal efficiency was above 75%, the accumulated mercury adsorption amount with pure PAC and that with a mixture of 5% PAC and 95% fly ash were respectively 196.1 and 21.7 µg Hg/g AC, indicating that mixing with fly ash had a very significant effect, and the mercury removal technology with pure PAC on a bag filter had obvious advantages as to mercury removal efficiency and utilization of PAC.
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- 2011
167. A Note on Extension of TOPSIS to Multiple Criteria Decision Making with Pythagorean Fuzzy Sets
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Yang, Yi, primary, Ding, Heng, additional, Chen, Zhen-Song, additional, and Li, Yan-Lai, additional
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- 2015
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168. A Note on Extension of TOPSIS to Multiple Criteria Decision Making with Pythagorean Fuzzy Sets.
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Yang, Yi, Ding, Heng, Chen, Zhen ‐ Song, and Li, Yan ‐ Lai
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FUZZY sets ,DECISION making ,PYTHAGOREAN theorem ,MATHEMATICAL proofs ,MATHEMATICAL inequalities ,TOPSIS method - Abstract
In this note, we point out an error to the proof of Theorem 3.4 in Zhang and Xu (Int J Intell Syst 2014;29(12):1061-1078) by a counterexample. We find that the inequality (i.e. [ABSTRACT FROM AUTHOR]
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- 2016
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169. An improved MULTIMOORA approach for group decision making based upon interdependent inputs of intuitionistic trapezoidal fuzzy numbers.
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CHEN Zhen-song and LI Yan-lai
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FUZZY numbers , *MATHEMATICAL models of decision making , *MATRICES (Mathematics) , *TRAPEZOIDS , *GROUP decision making , *MATHEMATICAL models - Abstract
A ranking method of intuitionistic trapezoidal fuzzy numbers (ITFNs) is proposed based on the notions of a minimum expectation and a maximum expectation. Considering risk preferences of decision makers, a novel concept of a risk coefficient is introduced to construct improved operational laws of ITFNs. Furthermore, an intuitionistic trapezoidal fuzzy Bonferroni (ITFB) mean operator is proposed based on the improved operational laws, and then the relative properties of the ITFB mean operator are investigated. With respect to a multi-attribute group decision making problem, in which decision-makers are interdependent, attributes are interdependent, and decision-makers' weights and attributes' weights are both unknown, an improved MULTIMOORA approach for group decision making of interdependent ITFNs inputs is proposed. In this approach, firstly, a set of intuitionistic trapezoidal fuzzy decision matrixes is constructed, and then a set of normalized minimum expectation decision matrixes is obtained by calculating the minimum expectation one corresponding to each intuitionistic trapezoidal fuzzy decision matrixes. Secondly, in order to determine decision-makers' weights and attributes' weights, an entropy weight approach for determining the attributes' weights associated with each decision-maker is integrated into an objective and subjective synthetic approach, which has considered interactions of decision-makers' preferences, for obtaining decision-makers' weights based on the combination of a 2-additive fuzzy measure and a Choquet integral. Finally, a weighted ITFB mean operator and a Hamming distance of ITFNs are respectively introduced to improve the traditional MULTIMOORA approach, the improved MULTI-MOORA approach is employed to obtain a ranking of alternatives corresponding to each one of three ordering approach, and then a dominance theory is utilized to summarize the three rankings into a single one. A practical case is used to illustrate the validity and feasibility of the proposed approach. [ABSTRACT FROM AUTHOR]
- Published
- 2014
170. Dechlorination test of modified calcium-based sorbent in a dual-layer granular bed filter.
- Author
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Yu Jian-wei, Yang Guo-hua, Tan Jun-jun, Huang San, Sheng Wei-peng, Chen Zhen-song, and Fei Hong-jia
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- 2011
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171. Influencing factors of mercury removal by pure powdered activated carbon on a bag filter.
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Chen Zhen-song, Yang Guo-hua, Huang San, Yu Jian-wei, Sheng Wei-peng, and Tan Jun-jun
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- 2011
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172. Averaging aggregation under uncertainty and bipolar preference environments.
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Jin, LeSheng, Yager, Ronald R., Chen, Zhen-Song, Mesiar, Radko, Martínez, Luis, and Rodríguez, Rosa M.
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AGGREGATION operators , *DECISION making - Abstract
Uncertainty in information provides the possibility of having and applying preferences, and therefore, it necessitates the study of preferences-involved aggregation theory and techniques under uncertainty information environments. Hence, this paper discusses several rules-based decision-making methods in uncertain decision scenarios with or without fusion processes. Some special averaging aggregation methods and transformations for basic uncertain information vector are proposed. [0, 1]-valued, [ - 1 , 1]-valued, and vector-valued bipolar preferences with some of their relations are discussed. The discussions and analyses of aggregation mainly revolve around Sugeno integral. Finally, multiple aggregation schemes with vector-valued preferences with numerical examples are proposed, and some few related comparisons are provided. [ABSTRACT FROM AUTHOR]
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- 2023
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173. Constructions of Lorenz curves based on trigonometric functions.
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DING Heng, LI Yan-lai, XIONG Sheng-hua, and CHEN Zhen-song
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LORENZ curve ,PARETO distribution ,TRIGONOMETRIC functions ,PARAMETER estimation ,SET theory ,CONVEX geometry - Abstract
To construct Lorenz curves of high fitting precision, this paper put forward two single-parameter models for Lorenz curves. Furthermore, it constructed a set of extended Lorenz curves by means of ways of such as compound, the weighted product and the convex combination, etc. based on the two proposed models. An illustration example shows that, compared with utilizing the Lorenz curves of trigonometric forms or the Lorenz curves of Pareto distribution separately, the Lorenz curves generated by the combination the Lorenz curves of trigonometric forms and the Lorenz curves of Pareto distribution have higher fitting precision, which verify the Lorenz curves of trigonometric forms are effective extensions of the existing ones. [ABSTRACT FROM AUTHOR]
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- 2014
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174. On extended power geometric operator for proportional hesitant fuzzy linguistic large-scale group decision-making.
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Xiong, Sheng-Hua, Zhu, Chen-Ye, Chen, Zhen-Song, Deveci, Muhammet, Chiclana, Francisco, and Skibniewski, Mirosław J.
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GROUP decision making , *MULTIPLE criteria decision making , *AERONAUTICAL safety measures , *DECISION making - Abstract
The unduly low or high data are commonly regarded as the outliers in the classical power geometric operator. However, in many cases, these types of data may be significantly important to the aggregated results. This study aims at expanding the practical application scope of the power geometric operator and then utilizing it to develop a proportional hesitant fuzzy linguistic large-scale group decision-making (LSGDM) model. The extended power geometric (EPG) operator is first introduced, in which these outliers can be distinguished as sufficiently important or "false/biased" data in accordance with the decision-making context. Several useful properties and application characteristics of the EPG operator are investigated. Subsequently, the proportional hesitant fuzzy linguistic normalized Manhattan distance is proposed, and it forms a basic concept to the construction of the proportional hesitant fuzzy linguistic extended power geometric (PHFLEPG) operator. Combined with the clustering model for decision makers, a PHFLEPG-operator-based consensus reaching approach is provided to simplify and rationalize the decision-making process. Furthermore, the comprehensive LSGDM result is derived in the use of the PHFLEPG operator. Eventually, a case study on regulatory capacity evaluation for the Civil Aviation Safety Regulatory Authority of China (CASRAC) is performed to validate the feasibility and effectiveness of the established LSGDM model. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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175. Requirement-driven supplier selection: a multi-criteria QFD-based approach under epistemic and stochastic uncertainties.
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Chang, Jian-Peng, Ren, Heng-Xin, Martínez, Luis, Pedrycz, Witold, and Chen, Zhen-Song
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QUALITY function deployment , *DISTRIBUTION (Probability theory) , *SUPPLY chain management , *EPISTEMIC uncertainty , *DIGITAL transformation - Abstract
Supplier selection (SS) has emerged as a critical challenge for companies aiming to enhance the operational management of their supply chains, a task that has grown in complexity with the advent of Industry 4.0 and the ongoing digital transformation. Recognizing the gaps in current literature—specifically, the lack of consideration for stakeholders' expectations in guiding SS, as well as the inadequate handling of epistemic and stochastic uncertainties—this paper introduces a multiple-criteria Quality Function Deployment (QFD)-based model for SS. To address epistemic uncertainty, we put forward a novel subjective judgment representation method, which is named as linguistic term set integrated with discrete subjective probability distribution (LTS-DSPD), to enable decision-makers to express their judgments in a manner that is both simpler and more nuanced. Furthermore, we also give the elicitation methods and computing techniques for LTS-DSPD. Then, we integrate stakeholders' requirements, along with their preferences and expectations for these requirements to inform and guide SS. To effectively operationalize this guidance, we design the QFD-based methods to transform stakeholders' inputs into the assessment criteria for SS, the weights of criteria, and the expectations for the performances of suppliers on each criterion, respectively. To address stochastic uncertainty, we have developed an innovative methodology for characterizing it, and adopt prospect theory to quantify the overall utility of alternative suppliers. The paper concludes with a case study to demonstrate its practical application and effectiveness in streamlining SS process. [ABSTRACT FROM AUTHOR]
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- 2024
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176. Smart Contract Application in Resisting Extreme Weather Risks for the Prefabricated Construction Supply Chain: Prototype Exploration and Assessment.
- Author
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Wang, Zhu-Jun, Sun, Yangyang, Su, Qin, Deveci, Muhammet, Govindan, Kannan, Skibniewski, Mirosław J., and Chen, Zhen-Song
- Abstract
The increasing frequency of extreme weather (EW) events has created significant vulnerabilities in the normal operations of the prefabricated construction supply chain (PCSC). This study aims to enhance the resilience of the PCSC against EW by utilizing smart contracts. The study proposes a prototype smart contract application to mitigate the risks posed by EW to the PCSC. Additionally, it identifies 28 potential barriers affecting smart contract adoption in the PCSC using the Technology-Organization-Environment framework. Furthermore, the paper presents a multi-objective optimization-based group decision-making method to assess the feasibility of smart contract adoption in the PCSC. An online survey was then conducted among 50 stakeholders from various links of the PCSC to gather insights into smart contract adoption. The results indicate that stakeholder awareness of smart contracts and the current corporate level are the most influential factors in decision-making. This research extends the application of smart contracts to risk management within the PCSC, offering valuable insights for stakeholders to enhance resilience and address the adverse effects of EW proactively. [ABSTRACT FROM AUTHOR]
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- 2024
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177. Optimal versioning strategy of enterprise software considering the customer cost-acceptance level.
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Wang, Zhu-Jun, Sun, Yang-Yang, Chen, Zhen‐Song, Feng, Geng‐Zhong, and Su, Qin
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SOFTWARE versioning , *CONSUMERS , *SMALL business , *COMPUTER software , *VALUE (Economics) - Abstract
Purpose: The emergence of the Software-as-a-service (SaaS) licensing model dramatically changes how enterprise software is released. Especially, it is favored by small and medium enterprises (SMEs) because of the cost-friendly feature. In contrast, many large enterprises (LEs) own relatively abundant budgets and prefer the on-premise software to fulfill demands through customization. Considering the differentiated cost-acceptance level among customers, this study aims to address the versioning problem of the enterprise software faced by software firms. Design/methodology/approach: A two-point distribution model is formulated to calculate the maximal profits software firm earned from both LEs and SMEs under three strategies (On-premise, SaaS and Hybrid). Then through profit comparison, this paper obtains the optimal versioning strategy and corresponding feasible conditions. Finally, the optimal solutions are derived concerning social welfare. Findings: A significant finding is that moving to SaaS becomes necessary for the software firms in product releases since the on-premise strategy will not be optimal. Based on this, this paper discovers that when LEs own a cost-acceptance level close to that of SMEs, the hybrid strategy is the only optimal choice. When LEs become less sensitive to costs, the hybrid strategy is suggested if the customization cost falls below the threshold. Otherwise, the SaaS strategy becomes the optimal option. The conclusions explain why some software vendors transit to "cloud companies" thoroughly and provide practical insights for software firms' future decisions. Originality/value: To the best of the authors' knowledge, this paper is the first information economics study to consider consumer cost sensitivity in discussing enterprise software versioning. The differentiated cost-acceptance level is introduced to describe the customer utilities, and the results uncover the necessity of moving to SaaS under diversified customer composition. This work provides significant theoretical value and practical insights. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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178. Uncertainty merging with basic uncertain information in probability environment.
- Author
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Jin, LeSheng, Yang, Yi, Chen, Zhen-Song, Deveci, Muhammet, and Mesiar, Radko
- Abstract
Basic uncertain information is a recently introduced and significant type of uncertainty that proves particularly valuable in decision-making environments with inherent uncertainties. In this study, we propose the concept of uncertainty cognition merging, which effectively combines basic uncertain information granules with probability measures to generate new probability measures within the same probability space. Additionally, we present a degenerated method that merges basic uncertain information granules with unit intervals to create new subintervals. We introduce four distinct uncertainty cognition merging methods and thoroughly compare and analyze their respective properties, limitations, and advantages. To demonstrate the practical application potential of our proposals, we provide numerical examples alongside further mathematical results. [ABSTRACT FROM AUTHOR]
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- 2025
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179. Two improved N-two-stage K-means clustering aggregation algorithmic paradigms for HFLTS possibility distributions.
- Author
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Xiong, Sheng-Hua, Xin, Yao-Jiao, Chen, Zhen-Song, Rodríguez, Rosa M., Feng, Si-Hai, Martínez, Luis, and Pedrycz, Witold
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K-means clustering , *MEDICAL equipment reliability , *POSSIBILITY , *DATA distribution - Abstract
The available method based on statistical principles for aggregating hesitant fuzzy linguistic term set (HFLTS) possibility distribution is the N -two-stage algorithmic aggregation paradigm driven by the K -means clustering (N2S-KMC). Nonetheless, the N2S-KMC method is subject to two significant limitations. (i) The grouping technique is capable of effectively partitioning decision-making information into N groups. However, it does not determine the appropriate placement of members within each group, as the number of computations is dependent on the number of elements present in each group, rather than the elements themselves. (ii) The initial clustering centers of K -means clustering are chosen without adhering to the distribution law within the aggregated hesitant 2-tuple linguistic terms set (H2TLTS) possibility distribution. This may result in a reduction in the clustering performance. In order to address the aforementioned limitations, we suggest two enhancement techniques for the former. Firstly, we propose the utilization of the minimum average difference (MAD) method to ascertain the number of groups. This approach aims to reduce the time required for the initial stage of aggregation following grouping. Secondly, we recommend the implementation of the maximize compactness degree of inter-group grouping (MCDIGG) method. This method enables the identification of group members, resulting in a more concentrated distribution of data subsequent to grouping. The present study suggests the utilization of MAD and MCDIGG techniques as a substitute for the grouping approach in the N2S-KMC model. This leads to the development of a new algorithm, IN2S-DO-KMC, wherein the data is partitioned into K subsets in a descending order to determine the initial center for KMC. Furthermore, with respect to the issue present in the subsequent phase, we propose the utilization of the density canopy (DC) algorithm to perform pre-clustering of the data and produce the initial clustering center and the quantity of clusters for the K -means algorithm. Subsequently, a refined version of the N2S-KMC model, denoted as IN2S-DC-KMC, has been suggested. Ultimately, an empirical study is conducted to assess the validity and practicability of the proposed framework for evaluating failure modes in medical devices. The outcomes are evaluated with regards to the efficacy of the algorithm, the numerical dispersion, and the pragmatic ramifications. • We propose the MAD method that determines the number of groups for the aggregated HFLTS possibility distributions. • We propose the MCDIGG method that determines member of each group with HFLTS possibility distributions. • We apply an improved density canopy clustering algorithm to the K-means clustering algorithm for pre-clustering process. • We propose a measure to predict the degree of compactness after data aggregated in different grouping cases. • We propose two aggregation algorithms, IN2S-DO-KMC and IN2S-DC-KMC, for HFLTS possibility distributions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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180. Shield attitude prediction based on Bayesian-LGBM machine learning.
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Chen, Hongyu, Li, Xinyi, Feng, Zongbao, Wang, Lei, Qin, Yawei, Skibniewski, Miroslaw J., Chen, Zhen-Song, and Liu, Yang
- Subjects
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MACHINE learning , *ATTITUDE (Psychology) - Abstract
Effective shield attitude control is essential for the quality and safety of shield construction. The traditional shield attitude control method is manual control based on a driver's experience, which has the defects of hysteresis and poor reliability. This research proposes an intelligent method to predict the shield attitude based on a Bayesian-light gradient boosting machine (LGBM) model. The constructed model includes 29 parameters that impact the shield attitude and 6 parameters that represent the shield attitude. The developed the Bayesian-LGBM model can predict the shield attitude and support shield attitude control by adjusting construction parameters and conducting iterative prediction. Guiyang rail transit line 3 is selected as a case study to verify the effectiveness of the proposed method. The results indicate that: (1) The developed Bayesian-LGBM model is able to effectively predict the shield attitude; (2) The importance ranking can clarify the key construction parameters that should be controlled; (3) The proposed method enables supporting the effective shield attitude control by continuously adjusting the shield construction parameters. The proposed attitude guidance control method based on the proposed Bayesian-LGBM model can be used to provide a reference for actual shield attitude applications and other similar problems. [ABSTRACT FROM AUTHOR]
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- 2023
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181. BIM-based building performance assessment of green buildings - A case study from China.
- Author
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Liu, Yang, Pedrycz, Witold, Deveci, Muhammet, and Chen, Zhen-Song
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SUSTAINABLE buildings , *ENERGY levels (Quantum mechanics) , *BUILDING information modeling , *SUSTAINABLE development , *ENVIRONMENTAL degradation - Abstract
In China, traditional buildings have begun to exhibit a range of issues, such as elevated levels of energy consumption and pollution. Consequently, these concerns have led to substantial resource inefficiency and environmental degradation. The evaluation and examination of green buildings are of utmost importance in promoting sustainable development. The current green building assessment framework is intricate and lacks sufficient development in terms of visual representation. Developing a green building strategy during the initial design phase is a multifaceted process that necessitates substantial allocation of human, material, financial, and temporal resources. In this study, we propose an assessment framework that incorporates a 15 s-level and 45 three-level green building indicator system, along with a 4-level classification standard. This framework is developed based on the most recent Chinese Assessment Standard for Green Building and the utilization of a Building Information Modeling (BIM) database. Furthermore, the integration of BIM with Pathfinder software is employed to assess the safety aspects of green buildings. On top of that, the combination of BIM with Ecotect software is utilized to evaluate the environmental aspects of green buildings. In this study, we performed a case study on a teaching building located at a university in central China, specifically focusing on the simulation of green building practices. The sequential calculation involves determining the duration of personnel evacuation, assessing the lighting conditions, evaluating the thermal conditions, analyzing the sound conditions, and examining the wind conditions. In addition, efforts were made to optimize the indicators requiring enhancement in order to enhance the efficacy of green buildings. • Proposes GBA framework with 15 s-level, 45 third-level indicators based on Chinese standards. • Integrates BIM with simulation software for GBA of safety, lighting, thermal, sound and wind. • Applies proposed GBA framework on a university teaching building case in China. • Determines green building score of 74 and grade level 2 for the case building. • Identifies indoor heat/humidity and energy saving as priority optimization areas. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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182. Artificial intelligence for production, operations and logistics management in modular construction industry: A systematic literature review.
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Liu, Qiurui, Ma, Yanfang, Chen, Lin, Pedrycz, Witold, Skibniewski, Mirosław J., and Chen, Zhen-Song
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CONSTRUCTION management , *LITERATURE reviews , *ARTIFICIAL intelligence , *OPERATIONS management , *MODULAR construction , *BUILDING design & construction - Abstract
• Examine existing literature on applying AI in the modular construction industry. • Exploring the production, operations and logistics (POL) management. • Analyze the progress and research patterns of AI for POL management. • Provide potential future directions for AI for POL management. Artificial intelligence (AI) has garnered significant attention within the modular construction industry, emerging as a prominent frontier development trend. A comprehensive and systematic analysis is required to gain a thorough understanding of the existing literature on the use of AI in the management of production, operations, and logistics within the modular construction industry. This review delves into the various aspects of AI implementation in this sector, adopting a critical perspective. The objective of this paper is to analyze the progress, suitability, and research patterns in the field of AI for the management of productions, operations, and logistics within the modular construction industry. First, a concise overview of AI technologies pertaining to the contemporary research on the production, operations and logistics management of the modular construction industry is provided. Second, a bibliometric analysis is performed to provide a comprehensive overview of the existing publications pertaining to this subject matter. Subsequently, this paper presents literature reviews and outlines future directions for each component, specifically AI in the context of production management, operations management, and logistics management within the modular construction industry. The review provides a valuable knowledge base and roadmap to guide future research and development efforts in AI-enhanced modular construction management. [ABSTRACT FROM AUTHOR]
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- 2024
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183. Product design and pricing strategies in a closed-loop supply chain with patent protection.
- Author
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Xiao, Lu, Wu, Zhi-Ying, Zhang, Song-Ling, Chen, Zhen-Song, and Govindan, Kannan
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PRODUCT design , *ORIGINAL equipment manufacturers , *PATENT licenses , *PRICES , *SUPPLY chains - Abstract
Purpose: This paper aims to propose a two-period model in which an original equipment manufacturer (OEM) decides the remanufacturability level of products in product design and unit patent licensing fee at the first period, and a third-party remanufacturer (3PR) that has been licensed by the OEM enters the remanufacturing market to compete with the OEM at the second period. Design/methodology/approach: This paper analyzes the OEM's optimal decisions of remanufacturability level in the product design and unit patent licensing fee at the first period, as well as the OEM's and the 3PR's optimal decisions of selling prices at the second period, under two scenarios that the remanufacturing is constrained or unconstrained by the collected quantity available at the end of the first period, by making use of game theory. Findings: The study finds that the OEM will choose high remanufacturability in product design only when the unit cost saving of remanufacturing or unit production cost of new products exceed certain thresholds. Originality/value: The study is the first attempt to simultaneously integrate product design and patent licensing in remanufacturing. It provides useful insights for OEM managers who face competition from 3PRs and may use their product design strategies to deter 3PRs and may protect patent of products by levying patent licensing fees from 3PRs. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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184. A prior knowledge-guided distributionally robust optimization-based adversarial training strategy for medical image classification.
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Jiang, Shancheng, Wu, Zehui, Yang, Haiqiong, Xiang, Kun, Ding, Weiping, and Chen, Zhen-Song
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IMAGE recognition (Computer vision) , *INPAINTING , *MEDICAL coding , *DIAGNOSTIC imaging , *COMPUTED tomography , *COMPUTER vision - Abstract
Medical image classification plays a vital role in computer vision applications within the field of healthcare and medicine, and deep neural network-based classifiers are continuously achieving new breakthroughs and demonstrating tremendous potential in medical imaging analysis. However, the lack of robustness in deep learning techniques makes it risky to apply these classifiers to the domain of healthcare. In addition, the existing adversarial training strategies and domain generation methods are difficult to generalize into the medical imaging field challenged by complex medical texture features. To address this issue, we propose a medical morphological knowledge-guided adversarial training strategy, by jointly considering the robustness against medical data distribution shifts and adversarial attacks from the view of distributionally robust optimization. First, we train a surrogate model with the augmented dataset by guided filtering for capturing model attention on medical morphological information. Next, we design a gradient normalization-based prior knowledge injection module to transfer the attention information learned by surrogate model to the main classifier. Finally, we design a distributionally robust a optimization-based training strategy to induce the main classifier to learn key diagnostic clues as well as enhance the robustness against adversarial attacks. To evaluate the effectiveness of the proposed methods, we perform experiments on two types of in-domain and out-of-domain medical image sets, which contain lung CT scan datasets and dermatoscopic image datasets. Comparative results show that the proposed training strategy achieves higher adversarial attack accuracy than all involved state-of-the-art adversarial training methods and domain generation methods. The code is available at https://github.com/sysu19351146/MMK-DRO. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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185. Image-based fire detection using an attention mechanism and pruned dense network transfer learning.
- Author
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Li, Hai, Ma, Zheng, Xiong, Sheng-Hua, Sun, Qiang, and Chen, Zhen-Song
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- *
DEEP learning , *COMPUTATIONAL complexity , *PUBLIC safety , *FLAME - Abstract
Fire accidents continually threaten lives and property, posing a great risk to public safety. Therefore, timely, accurate fire smoke and flame detection technology provides a technical foundation for ensuring personnel and property safety. This paper proposes a deep transfer learning model that integrates attention mechanisms and pruning techniques into the DenseNet network (P-DenseNet-A-TL) for detecting fire smoke and flame targets. To reduce the computational complexity of the fire detection model, we simplified the DenseNet network structure. To improve the recognition accuracy of the fire detection model, we incorporated attention mechanisms including a channel attention module (CAM) and spatial attention module (SAM) into the pruned dense network structure. To expedite the model training process, we also introduced a transfer learning model. Furthermore, to enhance the generalization ability and robustness of the model, we created a large-scale fire smoke and flame dataset. The experimental results show that our model (P-DenseNet-A-TL) achieved a test accuracy of 99.06%, F1 score of 99.09%, area under the curve (AUC) of 0.97, and a detection speed of 756 frames per second (FPS). The comparison experimental results and ablation experimental results indicate that our method achieves high detection accuracy and efficiency. Additionally, it possesses strong generalization capability and robustness. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
186. Evaluating potential quality of e-commerce order fulfillment service: A collective intelligence-driven approach.
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Chang, Jian-Peng, Su, Yan, Skibniewski, Mirosław J., and Chen, Zhen-Song
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- *
CONSUMER behavior , *SWARM intelligence , *ONLINE marketplaces , *ELECTRONIC commerce , *CUSTOMER satisfaction , *RESEMBLANCE (Philosophy) , *EXPECTATION (Psychology) , *INTELLIGENCE sharing - Abstract
E-commerce order fulfillment service (E-COFS) plays a pivotal role in shaping consumer behavior in online marketplaces. The strategic outsourcing of the service allows e-commerce sellers to prioritize their core business areas, enhance customer satisfaction, and minimize fulfillment costs. However, a critical challenge lies in appraising the potential quality of E-COFS provided by third parties, especially when lacking historical information. To address this, this paper first designs a generalized framework for guiding the construction of the quantitative model for evaluating the potential quality of E-COFS. The proposed framework unfolds in three stages: (1) evaluating potential effectiveness of an E-COFS through quantifying stakeholders' potential satisfaction from the E-COFS plan tailored by its provider, (2) evaluating its potential feasibility by quantifying the potential performance of the E-COFS quality management system (E-COFS-QMS) built by the provider on supporting the plan, and (3) integrating the above two parts to gauge the potential quality of the E-COFS. Building upon this framework, this paper then designs a novel quantitative model. Specifically, this model adopts the linguistic subjective judgment representation method and introduces basic uncertain linguistic information to achieve computing with words. Multiple stakeholders within e-commerce sellers are tasked with articulating their requirements, their preferences and expectations, and consensus reaching process is conducted to obtain the acceptable consensus among these stakeholders. Multiple experts from various domains are tasked with giving their subjective judgements on the performances of E-COFS and E-COFS-QMS, and a method of weighting individual judgments, which respects the reliabilities of individual judgements and the overall similarity in knowledge structures among the experts, is adopted to effectively tap into collective intelligence. Finally, a case study is conducted to validate the validity and feasibility of the proposed quantitative model. [ABSTRACT FROM AUTHOR]
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- 2024
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187. Prediction of airport runway settlement using an integrated SBAS-InSAR and BP-EnKF approach.
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Xiong, Sheng-Hua, Wang, Zhi-Peng, Li, Gang, Skibniewski, Mirosław J., and Chen, Zhen-Song
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- *
RUNWAYS (Aeronautics) , *LOGICAL prediction , *SYNTHETIC aperture radar , *BACK propagation , *KALMAN filtering , *FORECASTING - Abstract
The prediction of surface settlement occupies a crucial role in achieving effective catastrophe prevention and mitigation, as well as facilitating the maintenance of airport runways. Given the challenges associated with the manual collection of settlement data and the suboptimal timeliness of the Back Propagation (BP) technique in neural networks, this study proposes an integrated prediction method that combines the Ensemble Kalman Filter (EnKF) with BP. This study focuses on the processing of Synthetic Aperture Radar (SAR) pictures obtained from the ascending orbit of the Sentinel-1A satellite. The Small Baseline Subset Interferometric synthetic aperture radar (SBAS-InSAR) technology is employed to derive the settlement time series on the runway of Kangding Airport. Moreover, three sites with high coherence within the primary settlement region are employed to assess the dependability of the model after the expansion of the data by cubic spline interpolation. The findings of the study indicate that both the BP-EnKF and BP models exhibit favorable outcomes in predicting airport runway settlement. However, following the alteration of data caused by external environmental influences, the BP-EnKF model has superior adaptability to variations in data. It has been shown that the BP-EnKF model exhibits a prediction accuracy that surpasses the BP model by 9.25%. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
188. Balancing the signals: Bayesian equilibrium selection for high-speed railway sensor defense.
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Xiong, Sheng-Hua, Qiu, Mo-Ran, Li, Gang, Zhang, Hao, and Chen, Zhen-Song
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- *
HIGH speed trains , *WIRELESS sensor networks , *PANTOGRAPH , *NASH equilibrium , *DETECTORS , *ENERGY consumption , *DENIAL of service attacks , *CYBERTERRORISM - Abstract
High-speed railway systems face frequent cybersecurity threats targeting their information networks. Continuous operation of protection mechanisms on wireless sensors results in persistent energy consumption, which is undesirable. To address this, we propose an optimal defense strategy selection approach for High-speed Railway Wireless Sensor Networks (HSR-WSNs) using an enhanced signaling game model. We first establish the basic elements and overall structure of the model, considering the presence of incomplete information and dynamic interactions between players. This paper provides background on signaling games, including theoretical concepts of equilibrium strategies and locations. We then develop a system to quantify payoffs for offensive and defensive tactics, incorporating distance and usage frequency weights. Finally, Long Short-Term Memory (LSTM) and the public UNSW-NB15 dataset are leveraged to augment assumptions and reduce human subjectivity in results. Experiments demonstrate the model effectively identifies energy balance points for HSR-WSNs and determines appropriate protection strategies. The work contributes to enhancing the selection of effective defense techniques against network attacks in wireless sensor systems. This has significant practical implications in enabling optimized energy usage and functionality of secured sensor nodes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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189. Multisource information fusion for real-time optimization of shield construction parameters.
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Chen, Hongyu, Liu, Jun, Shen, Geoffrey Qiping, Martínez, Luis, Deveci, Muhammet, Chen, Zhen-Song, and Liu, Yang
- Abstract
This paper introduces a hybrid intelligent framework that combines Bayesian optimization (BO), a random forest (RF) model, and the nondominated sorting genetic algorithm-III (NSGA-III) for the optimization and control of tunnel shield construction parameters. The BO-RF method establishes a nonlinear mapping function between the input variables and three targets, surface settlement, cutter wear, and advance speed, serving as the fitness function for NSGA-III. Model interpretability analysis is conducted using Shapley Additive ExPlanations (SHAP). A multiobjective intelligent optimization model is formulated with NSGA-III, targeting surface settlement, cutter wear, and advance speed. A case study validates the applicability and effectiveness of this approach, leading to the following conclusions: (1) The BO-RF algorithm yields highly accurate prediction results, with R2 values ranging from 0.930 to 0.938, RMSE ranging from 0.138 to 0.172, and MAE ranging from 0.112 to 0.138 for the three targets. (2) The optimization results for surface settlement, cutter wear, and advance speed are outstanding, with an average improvement of 12.56 %. The simultaneous adjustment of the three shield construction parameters leads to the best optimization results, with an average improvement of 19.67 %. (3) The energy consumption of the shield drive system decreases by an average of 10.70 %, and the optimization improvement for the first three objectives decreases by an average of 1.82 %, 1.46 %, and 2.23 %, respectively. By introducing the integrated BO-RF-NSGA-III algorithm, this study contributes to the field of tunnel engineering optimization management. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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190. Exploring risk propagation in a multi-level supply chain network: a perspective of node perturbation.
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Mu, Nengye, Han, Shijiao, Liu, Jing, Wang, Yuanshun, Wang, Zhutao, Mardani, Abbas, and Chen, Zhen-Song
- Abstract
With the complex shifts in the international situation, global supply chain networks (SCNs) are now facing disruption risks. The primary objective of this study is to explore the evolutionary mechanisms of multi-level supply chain networks (MLSCNs) and simulate the risk propagation throughout the network. Firstly, this study formulates a MLSCN influenced by the combined preference. It contemplates a cascading risk propagation model that accommodates for node perturbations. Secondly, this study proceeds to examine the effects of parameter variations and capacity dynamics on risk propagation. Finally, the effect of failure probability on the robustness of MLSCNs is considered in the case of node overloading. The conclusions indicate that the developed framework fosters a more robust topology within MLSCNs. Within the context of the cascading risk propagation model, it is observed that parameter variations have a significant impact on the cascading propagation of risk. Moreover, the regulation parameter for load reallocation effectively slows down the rate at which risk cascades to network failure. The study also reveals that dynamic changes in node capacities can intensify network vulnerability, and make it more prone to collapse. Failure probability emerges as a potential countermeasure to prevent network collapse. The outcomes of this research can provide a valuable reference for both researchers and business managers to better understand SCNs and the cascading propagation of risks within them. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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191. Optimal releasing strategy of enterprise software firms facing the competition from cloud providers.
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Sun, Yangyang, Wang, Zhu-Jun, Deveci, Muhammet, and Chen, Zhen-Song
- Subjects
- *
MARKETING software , *COMPUTER software industry , *COMPUTER software , *MARKET segmentation , *BUSINESS enterprises , *CLOUD computing , *PREOPTIC area - Abstract
In the contemporary enterprise software market, there has been a notable surge in the utilization of SaaS products. This trend has prompted certain upstream suppliers of cloud resources, commonly referred to as cloud providers, to introduce their own SaaS offerings, thereby augmenting the competition within the industry. The matter of optimal releasing strategy encountered by software firms in this industry has been scarcely addressed in prior literature. Therefore, the present study employs the Hotelling model to depict the market segmentation in the context of a software firm's selection among three distinct strategies, namely on-premise, SaaS, and dual version strategies, to effectively manage competition. Through an examination of the optimal pricing and profit for each strategy, and a subsequent analysis of the resulting profits, we have managed to arrive at conclusive recommendations for optimal strategy selection. Based on the analytical findings, it can be inferred that the selection of the optimal strategy can be classified into two distinct scenarios, which are contingent upon the magnitude of the unit cloud rental fee. In a high-cost rental environment, the optimal release strategy shifts from the SaaS strategy and dual version strategy to the on-premise strategy, as the disparity in value between on-premise and SaaS versions increases. In a context of low rental fee and a widening value gap, the optimal strategy choice sequence is as follows: SaaS, on-premise, dual version, on-premise, dual version, and ultimately on-premise. Furthermore, we analyze and reveal the impact of various factors on the maximum profit that software companies can achieve. The findings we have derived have significant implications for software companies' decision-making in the face of the challenge posed by highly centralized public cloud supply. • Cloud providers' entrance intensity the enterprise software market competition. • We propose three releasing strategies, on-premise, SaaS, and dual version. • Hotelling model is adopted to analyze software firms' optimal releasing strategy. • Strategy selection depends on the cloud renting fee and two versions' value gap. • Effects of related factors on profits are identified. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
192. A hybrid generalized TODIM approach for sustainable 3PRLP selection in electronic manufacturing industry.
- Author
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Yang, Qiang, Yan, Wan-Mei, Liu, Meng, Deveci, Muhammet, Garg, Harish, and Chen, Zhen-Song
- Subjects
- *
FUZZY decision making , *REVERSE logistics , *THIRD-party logistics , *ELECTRONIC industries , *MANUFACTURING industries , *GROUP decision making - Abstract
Under the pressure of globalization, environmental protection/resource consumption, and the intensification of market competition, various industries have recognized the significant importance of sustainable supply chain management (SCM), in which reverse logistics (RL) has attracted many concentrations from governments to enterprises and the public. However, it is relatively difficult to operate RL autonomously for most electronic manufacturing companies whose core businesses and competition advantages are not in logistics operations because of limited resources and professional skills. Therefore, it is a good choice to escape from the predicament by selecting an appropriate third-party reverse logistics provider (3PRLP) with professional skills for outsourcing and accomplishing the RL business. Generally, evaluation and selection of a 3PRLP is regarded as a multi-attribute group decision-making (MAGDM) process, in which four aspects, namely, the evaluation attributes system, weight of experts and attributes, preference information representation and alternative ranking method have impacts on the decision-making results. Therefore, this paper constructs an MAGDM framework named generalized TODIM (TOmada de DecisãoInterativa e Multicritério, Portuguese acronym for Interactive multicriteria decision-making) under a hybrid information environment, which includes crisp numbers, interval numbers and fuzzy linguistic terms, for solving the problem. It provides a useful reference for manufacturing enterprises to find out the optimal 3PRLP from many alternatives. In particular, the use of different information forms for different evaluation attributes can not only facilitate decision makers to provide their judgments, but also effectively retain the original decision information as much as possible. Utilization of the generalized TODIM method is helpful for considering the risk attitudes and psychological preference behaviors of decision-makers. Finally, to demonstrate the feasibility and effectiveness of the proposed method, a case study relates to select a sustainable 3PRLP in an electronic manufacturing company was conducted. The findings show that the company should pay more attention to the attributes related to social responsibility, service quality and cost when selecting alternative 3PRLP under the sustainable SCM environment. It also provides useful suggestions for 3PRLP themselves to improve their competitiveness from these aspects. Moreover, the sensitivity and comparative analysis demonstrated the necessity and superiorities of comprehensively considering weights of experts and attributes, adopting hybrid information formats, and taking into account the risk attitudes and psychological preference behaviors of decision-makers during the evaluation and selection process. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
193. Some general fusion and transformation frames for merging basic uncertain information.
- Author
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Jin, LeSheng, Yager, Ronald R., Mesiar, Radko, and Chen, Zhen-Song
- Subjects
- *
MATHEMATICAL analysis , *AGGREGATION operators , *CERTAINTY - Abstract
The Basic Uncertain Information (BUI) is a recently introduced type of uncertain data that has rapidly undergone development and practical application. The existing aggregation operators designed for BUI solely encompass the weighted mean and Choquet integral. The present study puts forth a set of general information fusion frameworks and methodologies aimed at gathering BUI granules. The first mode yields BUI granules as its output, whereas the subsequent two modes generate outputs in the form of interval values. The paper includes numerical examples and applications that correspond to the presented findings. The present study conducts an analysis of various mathematical properties pertaining to the three BUI fusion modes that have been proposed. These properties include idempotency, monotonicities, certainty derived inclusion, certainty monotonicity, homogeneities, non-symmetricity, comonotone additivities, and continuities. The proposals and analyses presented in this work are of a general nature and have the potential to inspire various practical specifications. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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194. Vulnerability analysis of China’s air and high-speed rail composite express network under different node attack strategies.
- Author
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Mu, Nengye, Xin, Peiyuan, Wang, Yuanshun, Cheng, Chiyao, Pedrycz, Witold, and Chen, Zhen-Song
- Abstract
The current study centers on the vulnerability of the express network. It involves the development of a composite express network in China that integrates air and high-speed rail transportation, utilizing real-world data. The network’s vulnerability is evaluated through simulation analysis. This study develops a model for calculating the value of node states that takes into account both the topological position and practical utility of said nodes. A node importance calculation model is developed by utilizing the information entropy theory and the pattern of cluster distribution. Two distinct strategies for node attacks have been developed: single-point failure and multiple-point failure. A system for assessing network vulnerabilities has been developed, which utilizes alterations in network structure and functional impairments to simulate and evaluate the vulnerability of the air and high-speed rail composite express network. The findings suggest that nodes exhibiting singular transportation modes and limited external connectivity are more vulnerable to cascading effects. Frequently, these nodal points are affiliated with provinces or self-governing territories that are situated in geographically remote areas and exhibit comparatively lower degrees of economic advancement. Improving the development of urban air and high-speed rail infrastructure, as well as augmenting the connectivity of air and high-speed rail express services, are essential measures to strengthen the self-risk resistance capacity of these hubs. Optimizing the network structure and modifying the internal topological and transportation coupling relationships can enhance the overall performance of the network, thereby bolstering the risk resilience of the air and high-speed rail composite express network holistically. The aforementioned discoveries offer novel perspectives for aviation enterprises and railway departments in their decision-making regarding air-rail intermodal strategies, as well as for the development of all-encompassing transportation network planning. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
195. BIM-driven building greenness evaluation system: An integrated perspective drawn from model data and collective experts' judgments.
- Author
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Wu, Xianguo, Cao, Yuan, Liu, Weicheng, He, Yabo, Xu, Gang, Chen, Zhen-Song, Liu, Yang, and Skibniewski, Mirosław J.
- Subjects
- *
VEGETATION greenness , *SUSTAINABLE buildings , *ENVIRONMENTAL quality , *ENVIRONMENTAL degradation , *BUILDING performance , *DATA modeling , *SUSTAINABLE development , *INTELLIGENT buildings - Abstract
Traditional buildings will lead to a series of problems such as high energy consumption, high pollution, and serious waste of resources and environmental damage. It is of great significance to construct a green building evaluation system based on the physical building framework to achieve energy saving and consumption reduction and to fit the sustainable development. In this study, a building greenness evaluation system combining BIM data model and prior knowledge of experts is constructed and the applicability of the method has been verified. IFC information is expressed and transmitted in terms of components, materials, equipment, environmental quality impact, etc., and BIM based building performance design data information conversion and greenness evaluation process is constructed; Based on the comparison and summary of the existing green building evaluation systems at home and abroad, the evaluation model of building greenness is determined; Based on the ideas and steps of establishing the index system proposed in the research, the index system of building greenness evaluation is established from the aspects of environmental quality (Q) and building load (L) on the basis of questionnaire, prior knowledge of experts and other methods; Combined with the mathematical model of greenness evaluation, the paper analyzes the indexes of different levels, determines the structural calculation methods of different indexes, and carries on the quantitative classification of the overall greenness evaluation. Finally, taking a citizen's house as an engineering case, the paper makes an empirical analysis on the greenness evaluation of green buildings. The results show that the green degree of the building is excellent(class A), which is consistent with the project positioning, and provides the basis for the efficient and accurate evaluation of green building. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
196. A robust deep reinforcement learning approach to driverless taxi dispatching under uncertain demand.
- Author
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Zhou, Xiaoting, Wu, Lubin, Zhang, Yu, Chen, Zhen-Song, and Jiang, Shancheng
- Subjects
- *
REINFORCEMENT learning , *TAXI service , *SUDDEN death , *TAXICABS , *TECHNOLOGICAL innovations , *ROBUST optimization , *TRAFFIC congestion - Abstract
With the progressive technological advancement of autonomous vehicles, taxi service providers are expected to offer driverless taxi systems that alleviate traffic congestion and pollution. However, it is challenging to maintain the efficiency and reliability of a taxi service system due to the complexity of the traffic network and fluctuating traffic demand. In this paper, we present a robust variant of the twin delayed deep deterministic policy gradient algorithm (TD3), namely, adaptive TD3 integrated with robust optimization (ATD3-RO), to implement a fleet of autonomous vehicles for a taxi service under uncertain passenger demand. Our proposed method incorporates an adaptive module for integer-valued action generation, which also enhances the model's resilience to a larger action space. Considering the uncertain demand of passengers, we design a perturbation sampling-based method to generate adversarial examples for robust training. Additionally, we propose a robust optimization-based strategy to generate a lower bound and guide the convergence of the critic network during the model training process. In our case study, we validate the efficacy of ATD3-RO by constructing a reinforcement learning simulator of the driverless taxi transportation system using real taxi data. The simulation results demonstrate that ATD3-RO outperforms the general TD3 algorithm and other state-of-the-art reinforcement-learning-based approaches while improving learning efficiency. We assess the algorithm's robustness against sudden changes in requests, e.g., a surge in demand at some traffic nodes caused by an emergent event. The results suggest that ATD3-RO performs adaptive actions that are aligned with the variations in passenger demand. Finally, we prove that our model can provide a reliable dispatching strategy even at various ratios between driverless taxis and passenger demand. • A novel RL model integrated with robust optimization is proposed to control driverless taxi fleets under uncertainty. • Robust optimization is exploited to guide the convergence of the critic network and improve the learning efficiency. • Experiment results show that the proposed model outperforms the general TD3 and other state-of-the-art RL approaches. • The model can provide a reliable dispatching strategy in different ratios between driverless taxis and passenger demand. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
197. Multi-objective combinatorial optimization analysis of the recycling of retired new energy electric vehicle power batteries in a sustainable dynamic reverse logistics network.
- Author
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Mu N, Wang Y, Chen ZS, Xin P, Deveci M, and Pedrycz W
- Subjects
- Logistic Models, Recycling methods, Electric Power Supplies
- Abstract
The recycling of retired new energy vehicle power batteries produces economic benefits and promotes the sustainable development of environment and society. However, few attentions have been paid to the design and optimization of sustainable reverse logistics network for the recycling of retired power batteries. To this end, we develop a six-level sustainable dynamic reverse logistics network model from the perspectives of economy, environment, and society. We solve the multi-objective combinatorial optimization model to explore the layout of the sustainable reverse logistics network for retired new energy vehicle power batteries recycling. A case study is implemented to verify the effectiveness of the proposed model. The results show that (a) the facility nodes near the front of the network fluctuate more by opening and closing; (b) the dynamic reverse logistics network is superior to its static counterpart; and (c) cooperation cost changes affect the transaction volume between third-party and cooperative enterprises and total network cost., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2023
- Full Text
- View/download PDF
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