International Transactions in Operational Research最新文献_第9页

Dynamic competition and market structure for platform-based products: roles of product quality and indirect network effect 平台型产品的动态竞争和市场结构：产品质量和间接网络效应的作用

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-11 DOI: 10.1111/itor.13450

Guowei Dou, Kun Wei, Lijun Ma, Xudong Lin

{"title":"Dynamic competition and market structure for platform-based products: roles of product quality and indirect network effect","authors":"Guowei Dou, Kun Wei, Lijun Ma, Xudong Lin","doi":"10.1111/itor.13450","DOIUrl":"10.1111/itor.13450","url":null,"abstract":"We consider dynamic competition between two platform-based products that exhibit two-sided network effects, such as game consoles and intelligent hardware. Firms compete in terms of pricing and Research & Development investment, which are driven by consumers’ marginal utility of quality, indirect network effects, and the differentiation between consumers’ preference for the products. We find that with a small marginal utility of consumers, the equilibrium investment of one firm increases first and decreases later with its product quality but is not obviously sensitive to the rival's. In contrast, with a large marginal utility, if the quality of the two products is comparable, the equilibrium investment increases substantially. However, if one product pulls ahead, the other firm will stop investing. Besides, we find that when the intrinsic value and the network value coexist, the market becomes more concentrated, even when consumers’ marginal utility is small. The market concentration increases in both the consumers’ marginal utility and the indirect network effect but decreases in the degree of differentiation between consumers’ preference toward the two products. Interestingly, we show that differentiation plays an important role in shaping the market structure only when the network effect is weak. Counterintuitively, we show that the differentiation corrodes firms’ total profits, which demonstrates that less fierce competition resulting from low substitution leads to a lower profit. Additionally, we reveal that dynamic interaction between quality and installed base motivates firms to improve from a low quality, the first-mover advantage does not ensure market dominance.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"31 5","pages":"3245-3279"},"PeriodicalIF":3.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140146967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Special issue on “Multiple criteria decision making for sustainable development goals (SDGs)” 关于 "可持续发展目标（SDGs）的多重标准决策 "的特刊

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-10 DOI: 10.1111/itor.13439

Davide La Torre, Hatem Masri, Constantin Zopounidis

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Special issue on “Managing supply chain resilience in the digital economy era” 数字经济时代的供应链复原力管理 "特刊

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-10 DOI: 10.1111/itor.13445

引用次数: 0

IFORS' Operational Research Hall of Fame: Clóvis Caesar Gonzaga 国际运筹学联合会运筹学名人堂：Clóvis Caesar Gonzaga

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-10 DOI: 10.1111/itor.13432

Celina de Figueiredo, Elizabeth W. Karas, Claudia Sagastizábal

引用次数: 0

A multi-objective transportation model for COVID-19 patients: lesson learned from France COVID-19 病人的多目标运输模型：法国的经验教训

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-08 DOI: 10.1111/itor.13447

Houda Alaya, Haifa Jammeli, Fouad Ben Abdelaziz, Meryem Masmoudi, Jerome Verny

引用次数: 0

Information and selling mode strategies in a supply chain with an outsourced private label product 外包自有品牌产品供应链中的信息和销售模式战略

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-08 DOI: 10.1111/itor.13448

Fa Wang, Jing Chen, Hui Yang, Fei Sun

{"title":"Information and selling mode strategies in a supply chain with an outsourced private label product","authors":"Fa Wang, Jing Chen, Hui Yang, Fei Sun","doi":"10.1111/itor.13448","DOIUrl":"10.1111/itor.13448","url":null,"abstract":"This paper examines the interplay between the information strategy of an e-commerce platform and the selling mode strategy of a manufacturer within a co-opetitive supply chain, as well as the identification of the optimal supply chain strategy. We develop a supply chain model where a platform outsources production of its private label product to a manufacturer, who also sells its national brand product through the platform. The platform must decide whether to acquire consumer quality preference information at a cost and share it with the manufacturer, while the manufacturer needs to choose between the reselling mode or the agency selling mode for its national brand product. The two driving effects (competition-intensification effect and mode differentiation effect) are identified. Our findings show that the platform will acquire and share information when the acquisition cost is sufficiently low, leading to the “competition-intensification effect.” Additionally, the manufacturer prefers the agency selling mode when cost-quality efficiency is low, and the reselling mode otherwise, driven by the “mode differentiation effect.” In cases where information sharing is absent, the manufacturer is more likely to choose the agency selling mode. Interestingly, when the cost-quality efficiency of the manufacturer's product is moderate and the information acquisition cost is low, the “competition-intensification effect” and the “mode differentiation effect” offset each other, resulting in the expansion of the region where the manufacturer chooses the reselling mode due to the platform's information-sharing strategy. As a result, this enhances a cooperative relationship between the manufacturer and the platform. We also derive the optimal supply chain strategy, providing insights into both the manufacturer's selling mode and the platform's information strategies in online retailing.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"31 5","pages":"3280-3317"},"PeriodicalIF":3.1,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A practical approach for dealing with hard knapsack problems using general-purpose integer programming software 使用通用整数编程软件处理难题的实用方法

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-01 DOI: 10.1111/itor.13449

Myung Soon Song, Pei Hua Lin, Yun Lu, Emre Shively-Ertas, Francis J. Vasko

{"title":"A practical approach for dealing with hard knapsack problems using general-purpose integer programming software","authors":"Myung Soon Song, Pei Hua Lin, Yun Lu, Emre Shively-Ertas, Francis J. Vasko","doi":"10.1111/itor.13449","DOIUrl":"10.1111/itor.13449","url":null,"abstract":"Several articles dealing with the generation of hard 0-1 knapsack problems (KPs) have given rise to 13,940 KP instances being made available for empirical testing. These KPs are typically solved using algorithms specifically designed to solve hard KPs. The goal of this paper is to demonstrate that two general-purpose integer programming software packages using default parameter settings and a standard PC can successfully be used to generate optimal or guaranteed near-optimal solutions for these 13,940 KP instances. Over 97% of the 13,940 instances have solutions generated that are guaranteed to be within 0.01% of optimum in less than 1 minute and a practical strategy for dealing with the other 3% is presented. Additionally, 3240 of the most difficult KPs were generated based on 6 parameters. Statistical analyses for predicting which values for these six parameters result in difficult-to-solve KPs based on the software used will be discussed. These results will be of particular interest to operations research practitioners who need to efficiently solve hard KPs related to real-world applications.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1472-1493"},"PeriodicalIF":3.1,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A heuristic for the non-unicost set covering problem using local branching 利用局部分支的非单成本集合覆盖问题启发式

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-02-27 DOI: 10.1111/itor.13446

J.E. Beasley

引用次数: 0

Personalized pricing versus showrooming: competition between online and offline retailers 个性化定价与陈列展示：线上与线下零售商之间的竞争

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-02-23 DOI: 10.1111/itor.13444

Zhenzhen Ren, Junfeng Tian, Shurong Kang, Meixian Tang, Jinsong Tian

{"title":"Personalized pricing versus showrooming: competition between online and offline retailers","authors":"Zhenzhen Ren, Junfeng Tian, Shurong Kang, Meixian Tang, Jinsong Tian","doi":"10.1111/itor.13444","DOIUrl":"10.1111/itor.13444","url":null,"abstract":"This study examines how personalized pricing affects customers’ showrooming behavior in the duopoly competition with horizontal product differentiation between traditional and online retailers. For the available personalized pricing strategies, we obtained the optimal decisions for both retailers in the scenarios with and without showrooming. Our results indicate that adopting personalized pricing under particular conditions enables each retailer to be more profitable, even in the presence of showrooming purchases. This finding explains why an increasing number of online and offline retailers have implemented personalized pricing based on technical means and consumer purchase records. It is also demonstrated that personalized pricing can counter showrooming behavior of consumers amidst the competition between both retailers, which provides a novel theoretical basis for dealing with cross-channel shopping in multichannel retail competition. We further clarify how retailers can avoid being trapped in a prisoner's dilemma when both sides have access to personalized pricing. Also, the adoption of personalized pricing can improve consumer surplus and social welfare.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"31 5","pages":"3371-3442"},"PeriodicalIF":3.1,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139953477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Statistical proxy based mean-reverting portfolios with sparsity and volatility constraints 具有稀疏性和波动性约束的基于统计代理的均值回复投资组合

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-02-13 DOI: 10.1111/itor.13442

Ahmad Mousavi, George Michilidis

{"title":"Statistical proxy based mean-reverting portfolios with sparsity and volatility constraints","authors":"Ahmad Mousavi, George Michilidis","doi":"10.1111/itor.13442","DOIUrl":"https://doi.org/10.1111/itor.13442","url":null,"abstract":"Mean-reverting portfolios with volatility and sparsity constraints are of prime interest to practitioners in finance since they are both profitable and well-diversified, while also managing risk and minimizing transaction costs. Three main measures that serve as statistical proxies to capture the mean-reversion property are predictability, portmanteau criterion, and crossing statistics. If in addition, reasonable volatility and sparsity for the portfolio are desired, a convex quadratic or quartic objective function, subject to nonconvex quadratic and cardinality constraints needs to be minimized. In this paper, we introduce and investigate a comprehensive modeling framework that incorporates all the previous proxies proposed in the literature and develop an effective unifying algorithm that is enabled to obtain a Karush–Kuhn–Tucker (KKT) point under mild regularity conditions. Specifically, we present a tailored penalty decomposition method that approximately solves a sequence of penalized subproblems by a block coordinate descent algorithm. To the best of our knowledge, our proposed algorithm is the first method for directly solving volatile, sparse, and mean-reverting portfolio problems based on the portmanteau criterion and crossing statistics proxies. Further, we establish that the convergence analysis can be extended to a nonconvex objective function case if the starting penalty parameter is larger than a finite bound and the objective function has a bounded level set. Numerical experiments on the S&P 500 data set demonstrate the efficiency of the proposed algorithm in comparison to a semidefinite relaxation-based approach and suggest that the crossing statistics proxy yields more desirable portfolios.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"289 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139953775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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