European Journal of Operational Research最新文献_第3页

A secure cross-silo collaborative method for imbalanced credit scoring 不平衡信用评分的安全跨竖井协作方法

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-12 DOI: 10.1016/j.ejor.2025.04.020

Zhongyi Wang, Yuhang Tian, Sihan Li, Jin Xiao

{"title":"A secure cross-silo collaborative method for imbalanced credit scoring","authors":"Zhongyi Wang, Yuhang Tian, Sihan Li, Jin Xiao","doi":"10.1016/j.ejor.2025.04.020","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.04.020","url":null,"abstract":"With the rapid development of information technology, there is an increasing amount of available data that can reflect a borrower’s creditworthiness, providing new avenues for credit scoring innovations. However, such data is commonly distributed across companies in various industries, and how to take advantage of multi-party collaboration while protecting customer data privacy is a major challenge. In this study, we propose an interpretable vertical logistic regression method with adaptive cost sensitivity (IVLR-ACS) for imbalanced credit scoring. Specifically, we construct a collaborative credit scoring method based on vertical logistic regression to preserve the privacy and security of multi-party information. First, to address the imbalanced class distribution problem, we develop an adaptive cost-sensitive (ACS) loss function to enhance the default risk identification of the proposed method. Then, to overcome the potential problem that the proposed method may suffer from malicious attackers adopting other technical means to steal participants’ private information, we design a differential privacy algorithm with adaptive gradient clipping and noise perturbation decay (ADDP) to train the proposed method. Finally, to improve the interpretability of collaborative multi-party credit decision-making, we introduce a feature importance interpretation method inherent to the logistic regression model to analyze the prediction results. We test the performance of the proposed method on eight credit scoring datasets and analyze its interpretability, privacy, complexity, and communication cost. Extensive experimental results demonstrate the competitiveness of the proposed method to utilize multi-party information securely and effectively.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"31 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The value of nuclear power plants’ flexibility: A multistage stochastic dynamic programming approach 核电站灵活性的价值：多阶段随机动态程序设计方法

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-11 DOI: 10.1016/j.ejor.2025.04.007

Ange Blanchard, Olivier Massol

{"title":"The value of nuclear power plants’ flexibility: A multistage stochastic dynamic programming approach","authors":"Ange Blanchard, Olivier Massol","doi":"10.1016/j.ejor.2025.04.007","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.04.007","url":null,"abstract":"In future power systems dominated by intermittent renewable generation, nuclear power plants will increasingly need to follow uncertain loads. However, regulatory and technical constraints limit the frequency of load-following operations, making their efficient allocation crucial. This paper explores the economic value of nuclear flexibility by modeling it as a stock constraint within a stochastic dynamic programming framework. We show how non-convex constraints at the reactor-scale translate to the fleet level through a linearized approximation, allowing for the analysis of multiple reactors operating under flexibility constraints. Applying this model to the French electricity system in 2035 using the Stochastic Dual Dynamic Programming (SDDP) algorithm, we estimate a marginal value of EUR 100/MW for the current flexibility level of the French nuclear fleet. Our results show that increased nuclear flexibility enhances system-wide cost efficiency and improves the integration of renewables, with solar generation seeing the largest benefits. However, our findings suggest a potential misalignment with the profit-maximizing goals of individual nuclear operators, which may deter them from increasing flexibility despite its necessity for the system.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"108 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Channel structures and subscription strategies for AI-driven logistics data products 人工智能驱动的物流数据产品的渠道结构和订阅策略

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-11 DOI: 10.1016/j.ejor.2025.04.003

Shulin He, Mengdi Zhang, Shuaian Wang, George Q. Huang

{"title":"Channel structures and subscription strategies for AI-driven logistics data products","authors":"Shulin He, Mengdi Zhang, Shuaian Wang, George Q. Huang","doi":"10.1016/j.ejor.2025.04.003","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.04.003","url":null,"abstract":"Motivated by the application of large models in artificial intelligence (AI), this paper proposes a new business model for AI-driven data product transactions in the freight market. We develop a game-theoretic model for the logistics data supply chain comprising a logistics data provider and a logistics data integrator. Observing the opportunity for the logistics data provider to directly sell AI-driven data products to consumers and supply data sets to the logistics data integrator, we explore two channel structures: a single-channel structure and a dual-channel structure. Furthermore, the logistics data provider can choose whether or not to subscribe to the value-added services provided by Cyber–Physical Internet (CPI), which enhance data product quality but also incur additional costs. This study presents the following results. First, our findings debunk the prevailing belief about product quality strategy that improving data product quality instead impairs the profit when targeting a high licensing rate and a large number of affluent consumers. Second, a dual-channel structure is only viable if the licensing rate is sufficiently high or the market is dominated by budget-conscious consumers, otherwise a single-channel structure is a superior choice. Third, subscribing to the value-added services provided by CPI, even when free, may not benefit the logistics data provider due to the spillover effect in a dual-channel structure. Managerial implications enable logistics data providers to achieve greater economic efficiency under various market conditions by adopting suitable channel structures and leveraging value-added services and pricing tools, thereby promoting AI-driven data product transactions.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"5 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated investment, retrofit and abandonment energy system planning with multi-timescale uncertainty using stabilised adaptive Benders decomposition 综合投资，改造和废弃能源系统规划与多时间尺度的不确定性使用稳定自适应Benders分解

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-11 DOI: 10.1016/j.ejor.2025.04.005

Hongyu Zhang, Ignacio E. Grossmann, Ken McKinnon, Brage Rugstad Knudsen, Rodrigo Garcia Nava, Asgeir Tomasgard

{"title":"Integrated investment, retrofit and abandonment energy system planning with multi-timescale uncertainty using stabilised adaptive Benders decomposition","authors":"Hongyu Zhang, Ignacio E. Grossmann, Ken McKinnon, Brage Rugstad Knudsen, Rodrigo Garcia Nava, Asgeir Tomasgard","doi":"10.1016/j.ejor.2025.04.005","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.04.005","url":null,"abstract":"We propose the REORIENT (REnewable resOuRce Investment for the ENergy Transition) model for energy systems planning with the following novelties: (1) integrating capacity expansion, retrofit and abandonment planning, and (2) using multi-horizon stochastic mixed-integer linear programming with multi-timescale uncertainty. We apply the model to the European energy system considering: (a) investment in new hydrogen infrastructures, (b) capacity expansion of the European power system, (c) retrofitting oil and gas infrastructures in the North Sea region for hydrogen production and distribution, and abandoning existing infrastructures, and (d) long-term uncertainty in oil and gas prices and short-term uncertainty in time series parameters. We utilise the structure of multi-horizon stochastic programming and propose a stabilised adaptive Benders decomposition to solve the model efficiently. We first conduct a sensitivity analysis on retrofitting costs of oil and gas infrastructures. We then compare the REORIENT model with a conventional investment planning model regarding costs and investment decisions. Finally, the computational performance of the algorithm is presented. The results show that: (1) when the retrofitting cost is below 20% of the cost of building new ones, retrofitting is economical for most of the existing pipelines, (2) platform clusters keep producing oil due to the massive profit, and the clusters are abandoned in the last investment stage, (3) compared with a traditional investment planning model, the REORIENT model yields 24% lower investment cost in the North Sea region, and (4) the enhanced Benders algorithm is up to 6.8 times faster than the level method stabilised adaptive Benders.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"22 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143901827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact formulations and valid inequalities for parallel machine scheduling with conflicts 具有冲突的并行机器调度的紧凑公式和有效不等式

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-11 DOI: 10.1016/j.ejor.2025.04.006

Phablo F.S. Moura, Roel Leus, Hande Yaman

{"title":"Compact formulations and valid inequalities for parallel machine scheduling with conflicts","authors":"Phablo F.S. Moura, Roel Leus, Hande Yaman","doi":"10.1016/j.ejor.2025.04.006","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.04.006","url":null,"abstract":"The problem of scheduling conflicting jobs on parallel machines consists in assigning a set of jobs to a set of machines so that no two conflicting jobs are allocated to the same machine, and the maximum processing time among all machines is minimized. We propose a new compact mixed integer linear formulation based on the representatives model for the vertex coloring problem, which overcomes a number of issues inherent in the natural assignment model. We present a polyhedral study of the associated polytope, and describe classes of valid inequalities inherited from the stable set polytope. We describe branch-and-cut algorithms for the problem, and report on computational experiments with benchmark instances. Our computational results on the hardest instances of the benchmark set show that the proposed algorithms are superior (either in running time or quality of the solutions) to the current state-of-the-art methods. We find that our new method performs better than the existing ones especially when the gap between the optimal value and the trivial lower bound (i.e., the sum of all processing times divided by the number of machines) increases.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"28 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mean-variance optimization in finite horizon Markov decision processes and its application to revenue management 有限时间马尔可夫决策过程中的均方差优化及其在收入管理中的应用

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-11 DOI: 10.1016/j.ejor.2025.03.030

Rainer Schlosser, Jochen Gönsch

引用次数: 0

Extended warranty pricing in a competitive aftermarket under logit demand 延长保修定价在竞争激烈的售后市场的logit需求

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-09 DOI: 10.1016/j.ejor.2025.04.001

Xiao-Lin Wang, Shizhe Peng, Xiaoge Zhang

{"title":"Extended warranty pricing in a competitive aftermarket under logit demand","authors":"Xiao-Lin Wang, Shizhe Peng, Xiaoge Zhang","doi":"10.1016/j.ejor.2025.04.001","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.04.001","url":null,"abstract":"It is common for multiple firms—such as manufacturers, retailers, and third-party insurers—to coexist and compete in the aftermarket for durable products. In this paper, we study price competition in a partially concentrated aftermarket where one firm offers multiple extended warranty (EW) contracts while the others offer a single one. The demand for EWs is described by the multinomial logit model. We show that, at equilibrium, such an aftermarket behaves like a combination of monopoly and oligopoly. Building upon this base model, we further investigate sequential pricing games for a durable product and its EWs to accommodate the ancillary nature of after-sales services. We consider two scenarios: one where the manufacturer (as the market leader) sets product and EW prices <ce:italic>simultaneously</ce:italic>, and another where these decisions are made <ce:italic>sequentially</ce:italic>. Our analysis demonstrates that offering EWs incentivizes the manufacturer to lower the product price, thereby expanding the market potential for EWs. Simultaneous product–EW pricing leads to a price concession on EWs compared to sequential pricing, effectively reducing the intensity of competition in the aftermarket. Overall, the competitiveness of an EW hinges on its ability to deliver high value to consumers at low marginal cost to its provider. While our focus is on EWs, the proposed game-theoretical pricing models apply broadly to other ancillary after-sales services.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"60 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Behavioral dynamic portfolio selection with S-shaped utility and epsilon-contaminations 具有s型效用和污染的行为动态投资组合选择

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-08 DOI: 10.1016/j.ejor.2025.03.029

Andrea Cinfrignini, Davide Petturiti, Barbara Vantaggi

引用次数: 0

Dynamic reconfigurations of matrix assembly layouts 矩阵装配布局的动态重构

IF 6.4 2区管理学

European Journal of Operational Research Pub Date : 2025-04-07 DOI: 10.1016/j.ejor.2025.03.023

O. Baturhan Bayraktar, Martin Grunow, Rainer Kolisch

{"title":"Dynamic reconfigurations of matrix assembly layouts","authors":"O. Baturhan Bayraktar, Martin Grunow, Rainer Kolisch","doi":"10.1016/j.ejor.2025.03.023","DOIUrl":"https://doi.org/10.1016/j.ejor.2025.03.023","url":null,"abstract":"Traditional assembly lines have become less efficient due to increasing customization and changing demand (e.g., the trend in e-vehicles). Matrix assembly systems, in which automated guided vehicles move products between the workstations laid out on a grid, are gaining popularity. One advantage of such systems is that they are easier to reconfigure compared to traditional assembly lines. In this work, we develop a methodology for the configuration and reconfiguration of matrix assembly layouts under changing demand. The decisions consist of selecting active stations, task assignments, and product flows for each period of a multi-period planning horizon. The three objective functions minimize the number of active stations, the number of reconfigurations, and the total flow distance. We formulate a lexicographic multi-objective mixed-integer linear programming model for this problem. We develop an exact solution approach using period-based, layout-based, and Benders decompositions. For our numerical tests, we adapt standard instances from the literature. In terms of computational performance, our approach is, on average, 53.3% faster than the original MIP solved with a commercial solver for practice-size instances. Our insights reveal that matrix layouts with dynamic reconfigurations enhance the active number of stations by 31.3% and reduce flow distances by 12.4% on average, compared to static layouts.","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"5 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-class support vector machine based on minimization of reciprocal-geometric-margin norms 基于互几何边距规范最小化的多类支持向量机

IF 6 2区管理学

European Journal of Operational Research Pub Date : 2025-04-05 DOI: 10.1016/j.ejor.2025.03.028

Yoshifumi Kusunoki , Keiji Tatsumi

{"title":"Multi-class support vector machine based on minimization of reciprocal-geometric-margin norms","authors":"Yoshifumi Kusunoki , Keiji Tatsumi","doi":"10.1016/j.ejor.2025.03.028","DOIUrl":"10.1016/j.ejor.2025.03.028","url":null,"abstract":"<div><div>In this paper, we propose a Support Vector Machine (SVM) method for multi-class classification. It follows multi-objective multi-class SVM (MMSVM), which maximizes class-pair margins on a multi-class linear classifier. The proposed method, called reciprocal-geometric-margin-norm SVM (RGMNSVM) is derived by applying the <span><math><msub><mrow><mi>ℓ</mi></mrow><mrow><mi>p</mi></mrow></msub></math></span>-norm scalarization and convex approximation to MMSVM. Additionally, we develop the margin theory for multi-class linear classification, in order to justify minimization of reciprocal class-pair geometric margins. Experimental results on synthetic datasets explain situations where the proposed RGMNSVM successfully works, while conventional multi-class SVMs fail to fit underlying distributions. Results of classification performance evaluation using benchmark data sets show that RGMNSVM is generally comparable with conventional multi-class SVMs. However, we observe that the proposed approach to geometric margin maximization actually performs better classification accuracy for certain real-world data sets.</div></div>","PeriodicalId":55161,"journal":{"name":"European Journal of Operational Research","volume":"324 2","pages":"Pages 580-589"},"PeriodicalIF":6.0,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0