Omega-international Journal of Management Science最新文献

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Multi-period portfolio choice under loss aversion with dynamic reference point in serially correlated market 序列相关市场中具有动态参考点的损失规避下的多期投资组合选择
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-05-08 DOI: 10.1016/j.omega.2024.103103
Jianjun Gao , Yaoming Li , Yun Shi , Jinyan Xie
{"title":"Multi-period portfolio choice under loss aversion with dynamic reference point in serially correlated market","authors":"Jianjun Gao ,&nbsp;Yaoming Li ,&nbsp;Yun Shi ,&nbsp;Jinyan Xie","doi":"10.1016/j.omega.2024.103103","DOIUrl":"https://doi.org/10.1016/j.omega.2024.103103","url":null,"abstract":"<div><p>This paper explores a novel multi-period portfolio decision model for loss-averse investors with dynamically adapted reference points in a market with serially correlated returns. We demonstrate that the optimal policy is a piecewise linear function of the deviation between current wealth and reference level, and its slopes are a path-dependent function of the historical returns, in sharp contrast to the constant slopes generated by the simplified model that ignores the diminishing sensitivity and assumes independent returns. This distinctive characteristic significantly departs from the conventional V-shaped pattern of the risky position, leading to a more intricate nonlinear functional mapping. Our study underscores the potential pitfalls of relying on the simplified model and offers valuable insights for investors and practitioners seeking to formulate effective portfolio strategies under realistic market conditions. Furthermore, our simulation analysis indicates that the predictability of returns, coupled with a slight degree of diminishing sensitivity, may amplify the disposition effect. Lastly, we establish that the new policy also effectively addresses the multi-period mean-conditional-value-at-risk (CVaR) portfolio optimization problem in the context of correlated returns, thereby expanding the practical applications of our findings.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140947603","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
Data-driven Wasserstein distributionally robust dual-sourcing inventory model under uncertain demand 不确定需求下数据驱动的瓦瑟斯坦分布式稳健双源库存模型
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-05-07 DOI: 10.1016/j.omega.2024.103112
Yun Geon Kim, Byung Do Chung
{"title":"Data-driven Wasserstein distributionally robust dual-sourcing inventory model under uncertain demand","authors":"Yun Geon Kim,&nbsp;Byung Do Chung","doi":"10.1016/j.omega.2024.103112","DOIUrl":"https://doi.org/10.1016/j.omega.2024.103112","url":null,"abstract":"<div><p>Dual-sourcing inventory management, which is aimed at replenishing inventory through two supply sources, has been extensively incorporated across various industries as it can mitigate supply chain related operational risks. Given the practical relevance of this framework, many dual-sourcing inventory models based on stochastic and robust optimization approaches have been developed. However, these approaches encounter challenges such as the curse of dimensionality or solution conservativeness. In this study, we developed a data-driven distributionally robust optimization model for dual-sourcing inventory management under uncertain demand conditions, in which partial information regarding the distribution of the uncertain demand is available. A tractable model was constructed to solve the problem, and an optimal solution was derived in a closed-form expression. Numerical experiments were conducted to evaluate the performance of the proposed model in comparison with benchmark models in terms of the order-, stock-, and rolling-horizon-related parameters and demand distributions. The results demonstrated the benefit of adopting the dual-sourcing strategy in inventory management based on the distributionally robust optimization approach. In addition, the proposed model outperformed the benchmark models in terms of mitigating the bullwhip effect.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140910021","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 relief pre-positioning and procurement planning considering non-governmental organizations support and perishable relief items in a humanitarian supply chain network 考虑到人道主义供应链网络中的非政府组织支助和易腐救济物品的综合救济预置和采购规划
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-05-07 DOI: 10.1016/j.omega.2024.103111
Alireza Khalili-Fard , Mojgan Hashemi , Alireza Bakhshi , Maziar Yazdani , Fariborz Jolai , Amir Aghsami
{"title":"Integrated relief pre-positioning and procurement planning considering non-governmental organizations support and perishable relief items in a humanitarian supply chain network","authors":"Alireza Khalili-Fard ,&nbsp;Mojgan Hashemi ,&nbsp;Alireza Bakhshi ,&nbsp;Maziar Yazdani ,&nbsp;Fariborz Jolai ,&nbsp;Amir Aghsami","doi":"10.1016/j.omega.2024.103111","DOIUrl":"10.1016/j.omega.2024.103111","url":null,"abstract":"<div><p>The escalating frequency and severity of disasters on a global scale have sparked inquiries into the efficacy of current disaster planning strategies in various scenarios. Despite the pivotal role of humanitarian supply chain planning in aiding impacted populations, much of the existing research is grounded in simplistic assumptions that limit their practicality. Addressing this gap, our proposed bi-objective model aligns response time and total cost, while also accommodating the collaboration between non-governmental organizations and governmental organizations to mirror real-world intricacies. This study comprehensively delves into various logistics aspects, encompassing pre- and post-disaster phases, including location, allocation, supplier selection, fleet size, supply contract, inventory, distribution, and transportation. This multifaceted approach enhances the model's suitability for managing genuine real-world emergencies. To mitigate disruption risks and unforeseen events, the model introduces pre-positioning, quantity flexibility contract, backup suppliers, and a multi-sourcing policy, thus enhancing the resilience and reliability of the logistics network. We present solutions for diverse scenarios through a scaled weighted sum method, while tackling uncertainty via a heuristic approach known as the backward scenario reduction method. Furthermore, to manage large-scale problems within an acceptable time frame, we propose an advanced hybrid algorithm. This algorithm synergizes a parallel differential evolution framework with reinforcement learning-enhanced local search mechanisms, aiming to improve both computational efficiency and solution accuracy. Finally, we validate the model's applicability through a real case study focusing on a flood scenario in Iran.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141049641","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
Distributed real-time pricing of smart grid considering individual differences 考虑个体差异的智能电网分布式实时定价
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-05-03 DOI: 10.1016/j.omega.2024.103109
Deqiang Qu , Junxiang Li , Xiaojia Ma
{"title":"Distributed real-time pricing of smart grid considering individual differences","authors":"Deqiang Qu ,&nbsp;Junxiang Li ,&nbsp;Xiaojia Ma","doi":"10.1016/j.omega.2024.103109","DOIUrl":"https://doi.org/10.1016/j.omega.2024.103109","url":null,"abstract":"<div><p>The utility function that characterizes customers’ satisfaction with electricity consumption plays an important and irreplaceable role in the real-time pricing mechanism based on the social welfare maximization model. Without the accurate quantification of customers’ utility, the real-time pricing will deviate from the reality. In fact, the utility functions of different types of customers in different regions should be obtained by fitting a large amount of historical data over a long period of time based on insight into the relationship between factors and utility. Based on the consideration of customers’ individual differences, a new utility function is proposed, which enriches the form of the utility function and provides a reference for fitting a real and accurate utility function. Further, based on this proposed utility function, a real-time pricing model of social welfare maximization is developed to obtain the fair electricity price between customers and the power supplier. On the basis of the separable structure of variables, we design distributed algorithms with global convergence for the pricing model and estimate a worst-case convergence rate. Numerical simulations verify the feasibility and effectiveness of our algorithms and the rationality of the new utility function, i.e., the electricity price based on the proposed utility function is more robust than the existing ones.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140878731","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
Discretionary investment managers evaluation in pension fund: Shared input dynamic network DEA approach 养老基金全权投资经理评估:共享投入动态网络 DEA 方法
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-04-29 DOI: 10.1016/j.omega.2024.103107
Sheng-Wei Lin , Wen-Min Lu
{"title":"Discretionary investment managers evaluation in pension fund: Shared input dynamic network DEA approach","authors":"Sheng-Wei Lin ,&nbsp;Wen-Min Lu","doi":"10.1016/j.omega.2024.103107","DOIUrl":"https://doi.org/10.1016/j.omega.2024.103107","url":null,"abstract":"<div><p>Investment trust corporations (ITCs) constitute one of the financial industry's subsectors, and their evaluations of fund management performance play a crucial role. With the recent increase in the number of ITCs and their assets, how the Public Service Pension Fund management board (PSPFMB) of Taiwan makes investment decisions regarding multiple companies has become a critical issue. Using the shared input dynamic network data envelopment analysis approach (SDNDEA), we empirically estimate the performance efficiency scores of the funds of 34 ITCs and analyze the performance of the manufacturing structures of their internal networks. Our results indicate that the PSPFMB should consider the effects of being entrusted with decisions on efficiency. Employing K-means clustering techniques, we investigate the operational characteristics of each group and identify the differences among them. Moreover, this research identifies significant externalities related to ownership structures, indicating that the PSPFMB should consider the effects of such structures on efficiency in the context of entrusting decisions. Thus, the PSPFMB can make optimal investment decisions based on our ITC evaluation and selection model and help pension funds achieve stable long-term investment benefits.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140901454","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
Leveraging explainable artificial intelligence in understanding public transportation usage rates for sustainable development 利用可解释人工智能了解公共交通使用率,促进可持续发展
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-04-28 DOI: 10.1016/j.omega.2024.103105
Gorkem Sariyer , Sachin Kumar Mangla , Mert Erkan Sozen , Guo Li , Yigit Kazancoglu
{"title":"Leveraging explainable artificial intelligence in understanding public transportation usage rates for sustainable development","authors":"Gorkem Sariyer ,&nbsp;Sachin Kumar Mangla ,&nbsp;Mert Erkan Sozen ,&nbsp;Guo Li ,&nbsp;Yigit Kazancoglu","doi":"10.1016/j.omega.2024.103105","DOIUrl":"https://doi.org/10.1016/j.omega.2024.103105","url":null,"abstract":"<div><p>Public transportation usage prediction is valuable for the sustainable development of transportation systems, particularly in crowded megacities. Machine learning technologies are of great interest for predicting public transportation usage. While these technologies outperform many other techniques, they suffer from limited interpretability. Explainable artificial intelligence (XAI) tools and techniques that offer <em>post-hoc</em> explanations of the obtained predictions are gaining popularity. This paper proposes an advanced tree-based ensemble algorithm for public transportation usage rate prediction. We aim to explain the predictions both with the most widely used technique of XAI, Shapley additive explanation (SHAP) and in the light of the rules presented. To predict the total public transportation usage, the proposed model combines all types of public transportation, categorized as ferry, railway, and bus, unlike most existing studies focusing on a single kind of public transport. Besides the sort of transportation, the day of the week, whether the day is special, and the daily ratio of passenger types were identified as model features for predicting the daily usage of each type of public transportation. We tested the proposed model using an open data set from Izmir City, Turkey. While the model had superior prediction performance, the explanations showed that the type of public transportation, weekday, and the ratio of full-fare passengers have the highest SHAP values, and the model features have many interactions. We also validated our results using an online data set showing Google search trends.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140842639","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
Increasing schedule reliability in the multiple depot vehicle scheduling problem with stochastic travel time 在具有随机旅行时间的多车厂车辆调度问题中提高调度可靠性
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-04-26 DOI: 10.1016/j.omega.2024.103100
Léa Ricard , Guy Desaulniers , Andrea Lodi , Louis-Martin Rousseau
{"title":"Increasing schedule reliability in the multiple depot vehicle scheduling problem with stochastic travel time","authors":"Léa Ricard ,&nbsp;Guy Desaulniers ,&nbsp;Andrea Lodi ,&nbsp;Louis-Martin Rousseau","doi":"10.1016/j.omega.2024.103100","DOIUrl":"https://doi.org/10.1016/j.omega.2024.103100","url":null,"abstract":"<div><p>The multiple depot vehicle scheduling problem (MDVSP) is one of the most studied problems in public transport service planning. It consists of assigning buses to each timetabled trip while respecting vehicle availability at each depot. Although service quality, and especially reliability, is the core of most transport agencies, the MDVSP is more often than not solved solely in a cost-efficient way. This work introduces a data-driven model to the reliable MDVSP with stochastic travel time (R-MDVSP-STT). The reliability of a schedule is assessed and accounted for by propagating delays using the probability mass function of the travel time of each timetabled trip. We propose a heuristic branch-and-price algorithm to solve this problem and a labeling algorithm with a stochastic dominance criterion for the associated subproblems. The solutions obtained are compared based on three metrics — under normal and extraordinary circumstances. Computational results on real-life instances show that our method can efficiently find good trade-offs between operational costs and reliability, improving the reliability of the solutions with little cost increase.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0305048324000665/pdfft?md5=5846a22d911c342a5ab38d403641a455&pid=1-s2.0-S0305048324000665-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140823610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the performance of banks through an improved sigma-mu multicriteria analysis approach 通过改进的西格玛-穆多标准分析法评估银行绩效
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-04-24 DOI: 10.1016/j.omega.2024.103099
Silvia Angilella , Michalis Doumpos , Maria Rosaria Pappalardo , Constantin Zopounidis
{"title":"Assessing the performance of banks through an improved sigma-mu multicriteria analysis approach","authors":"Silvia Angilella ,&nbsp;Michalis Doumpos ,&nbsp;Maria Rosaria Pappalardo ,&nbsp;Constantin Zopounidis","doi":"10.1016/j.omega.2024.103099","DOIUrl":"10.1016/j.omega.2024.103099","url":null,"abstract":"<div><p>The <span><math><mi>σ</mi></math></span>-<span><math><mi>μ</mi></math></span> efficiency methodology has been recently introduced for multicriteria evaluation problems, based on the framework of Stochastic Multi-Attribute Acceptability analysis (SMAA), to address the uncertainty in the performance of a set of decision alternatives. The methodology builds, iteratively, a set of Pareto-Koopmans efficiency frontiers, which are used to assess the alternatives with respect to their expected performance and its variability, measured across different scenarios for the weights of the evaluation criteria. This paper presents an improved algorithmic implementation of this methodology that provides results that are consistent with the Pareto dominance relation between the alternatives. The proposed approach is employed to evaluate the performance of a sample of European banks which participated in the European stress tests conducted by the European Banking Authority, over the last five years available (2017–2021). The performance and efficiency of the banks is analyzed using financial criteria along with environmental, social, and governance (ESG) factors. Results from comprehensive and disaggregated analysis reveal performance disparities among banks in financial and ESG factors, highlighting the influence of country-specific green policies and individual bank practices. Valuable for the banking sector and regulators, the findings help identify operational inefficiencies and propose areas for performance enhancement, operational improvement, and innovation, with a focus on green practices.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0305048324000653/pdfft?md5=1b4f36f24041d56cec47e3fdd55c9fdd&pid=1-s2.0-S0305048324000653-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140759660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimal decision-making of post-disaster emergency material scheduling based on helicopter–truck–drone collaboration 基于直升机-卡车-无人机协作的灾后应急物资调度优化决策
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-04-24 DOI: 10.1016/j.omega.2024.103104
Yong Shi , Junhao Yang , Qian Han , Hao Song , Haixiang Guo
{"title":"Optimal decision-making of post-disaster emergency material scheduling based on helicopter–truck–drone collaboration","authors":"Yong Shi ,&nbsp;Junhao Yang ,&nbsp;Qian Han ,&nbsp;Hao Song ,&nbsp;Haixiang Guo","doi":"10.1016/j.omega.2024.103104","DOIUrl":"10.1016/j.omega.2024.103104","url":null,"abstract":"<div><p>In the last decades, natural disasters, such as earthquakes and landslides, have occurred frequently, seriously threatening the safety of people’s lives and property. How emergency material is scheduled and delivered efficiently to the affected sites after a disaster has become a critical issue in emergency management. Current studies on emergency material scheduling mainly focus on truck or helicopter transport. Inspired by the success of employing drones in commercial logistics, this work investigates the emergency material scheduling issue based on the cooperative transport of drones, helicopters, and trucks. Specifically, this paper considers the limited transport capacity, road conditions in the early stage of the disaster rescue, and affected sites restricted by road conditions that can only be served by helicopters or drones. The studied problem is formulated as a mixed integer programming model, and a two-stage heuristic algorithm is developed to solve the model. For the proposed model, instances of different sizes are generated, and extensive experiments are performed to test the efficiency of the proposed algorithm. The comparison between the solutions obtained by the two-stage algorithm and Gurobi Solver for the small instances validates the effectiveness of the proposed heuristic algorithm. Experimental results for the larger instances show that the proposed two-stage algorithm can effectively solve the problem of emergency material scheduling. Sensitivity analysis of ten typical instances is performed to provide managerial insights. Finally, a case study of the Sichuan earthquake and the visualization of transport routes are presented. The model and solving approach proposed in this work can provide essential decision references for emergency management decision-making.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140761886","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-period share pledging with sequential three-way proportion decision 多期股票质押与顺序三方比例决策
IF 6.9 2区 管理学
Omega-international Journal of Management Science Pub Date : 2024-04-21 DOI: 10.1016/j.omega.2024.103102
Mingwei Wang , Junping Zhang , Decui Liang
{"title":"Multi-period share pledging with sequential three-way proportion decision","authors":"Mingwei Wang ,&nbsp;Junping Zhang ,&nbsp;Decui Liang","doi":"10.1016/j.omega.2024.103102","DOIUrl":"10.1016/j.omega.2024.103102","url":null,"abstract":"<div><p>Considering the potential loss of decision-making power associated with share pledging, shareholders need to pledge appropriate share proportion based on their own shareholding situation. To assist shareholders in handling this decision-making challenge, we design a share pledging decision-making method with three-way decision, which fully considers the characteristics of share pledging. Firstly, we construct a novel calculation method of conditional probability based on left-tail systemic risk and share return data, which appropriately measures the probability of share price plummeting. Then, we propose a learning method of loss functions with shareholding proportion information, which considers pledged share proportions. To enhance the flexibility of the proposed method in handling practical share pledging issues, we discuss two scenarios including complete shareholding proportion information and limited shareholding proportion information. Furthermore, we design three-way proportion decision (TWPD) through introducing particle swarm optimization algorithm, which can determine the share proportion of pledge and redemption with minimizing the loss of decision-making power, and develop TWPD to sequential three-way proportion decision (STWPD) for solving multi-period share pledging problem. Finally, we apply the proposed method to deal with share pledging problem of a Chinese firm based on real data collected from China Stock Market &amp; Accounting Research Database, and provide implications for shareholders and firms in risk management during share pledging based on the results of comparison experiments and sensitivity analysis.</p></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":null,"pages":null},"PeriodicalIF":6.9,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140788606","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
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