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作者:Alon, Tzvi; Anily, Shoshana
作者单位:Hebrew University of Jerusalem; Hebrew University of Jerusalem; Tel Aviv University
摘要:Problem definition: We consider the parallel machine scheduling (PMS) under job-splitting game defined by a set of manufacturers where each holds uniform parallel machines and each is committed to produce some jobs submitted to her by her clients while bearing the cost of the sum of completion times of her jobs on her machines. An efficient algorithm for this scheduling problem is well known. We consider the corresponding cooperative game, where the manufacturers are players that want to join ...
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作者:Tulabandhula, Theja; Sinha, Deeksha; Karra, Saketh Reddy; Patidar, Prasoon
作者单位:University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; Massachusetts Institute of Technology (MIT); Carnegie Mellon University
摘要:Problem definition: We study the problem of modeling purchase of multiple products and using it to display optimized recommendations for online retailers and e-commerce platforms. Rich modeling of users and fast computation of optimal products to display given these models can lead to significantly higher revenues and simultaneously enhance the user experience. Methodology/results: We present a parsimonious multi purchase family of choice models called the BundleMVL-K family and develop a bina...
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作者:Guo, Xiaomeng; Jiang, Baojun
作者单位:Hong Kong Polytechnic University; Washington University (WUSTL)
摘要:Problem description: In many markets with demand uncertainties, competing retailers may share inventories for common products that they offer consumers. This paper examines how competitors' product sharing affects their inventory and service-quality decisions. The existing literature has mainly focused on inventory sharing among independent retailers who do not compete with each other. Our research aims to fill the gap in this literature by investigating the tradeoffs of inventory sharing betw...
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作者:Jin, Chen; Wu, Chenguang (Allen); Chen, Ying-Ju
作者单位:National University of Singapore; Hong Kong University of Science & Technology; Hong Kong University of Science & Technology
摘要:Problem definition: Prior studies have identified the role of downstream retailers' strategic inventory in mitigating double marginalization within decentralized supply chains. Our work adds to this literature by introducing two relevant features that naturally appear in a dynamic environment: network externality and copycatting. We demonstrate how strategic inventory and network externality can be used to manage competition from within and outside the supply chain. Methodology/results: We dev...
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作者:Ghiassi-Farrokhfal, Yashar; Belo, Rodrigo; Hesamzadeh, Mohammed Reza; Bunn, Derek
作者单位:Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; Universidade Nova de Lisboa; Royal Institute of Technology; University of London; London Business School
摘要:Problem definition: With the rise of renewables and the decline of fossil fuels, electricity markets are shifting toward a capacity mix in which low-cost generators (LCGs) are dominant. Within this transition, policymakers have been considering whether current market designs are still fundamentally fit for purpose. This research analyses a key aspect: the design of real-time imbalance pricing mechanisms. Currently, markets mostly use either single pricing or dual pricing as their imbalance pri...
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作者:Khorasani, Sina; Nittala, Lakshminarayana; V. Krishnan, Vish
作者单位:University System of Ohio; University of Dayton; University of California System; University of California San Diego
摘要:Problem definition: Firms seek to use the contest format to source solutions from a broader network of outside solvers. We study the application of the contest approach in multistage settings and show how and when screening of contestants between stages can produce improved contest outcomes. Methodology/results: We present an application-driven game-theoretic model to capture imperfections in screening using the true-positive rate (sensitivity) and the true-negative rate (specificity). Specifi...
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作者:Kotsi, Telesilla O.; Aflaki, Arian; Aydin, Goker; Pedraza-Martinez, Alfonso J.
作者单位:University System of Ohio; Ohio State University; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; Johns Hopkins University; University of Notre Dame
摘要:Problem definition: U.S. nonprofits declare three types of expenses in their IRS 990 forms: program spending to meet beneficiaries' needs; fundraising spending to raise donations; and administration spending to build and maintain capacity. Charity watchdogs, however, expect nonprofits to prioritize program spending over other categories. We study when such expectations may lead to the starvation cycle or underspending on administration and fundraising. Methodology/results: We characterize opti...
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作者:Afeche, Philipp; Liu, Zhe; Maglaras, Costis
作者单位:University of Toronto; Imperial College London; Columbia University
摘要:Problem definition: Motivated by ride-hailing platforms such as Uber, Lyft and Didi, we study the problem of matching riders with self-interested drivers over a spatial network. We focus on the performance impact of two operational platform controls- demand-side admission control and supply-side repositioning control-considering the interplay with two practically important challenges: (i) spatial demand imbalances prevail for extended periods of time; and (ii) self-interested drivers strategic...
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作者:Lu, Tao; Tomlin, Brian
作者单位:University of Connecticut; Dartmouth College
摘要:Problem definition: Dual sourcing and contingent sourcing are important risk mitigation strategies to manage supply chain risks, including transportation-related losses of inbound orders. Contingent sourcing as a means of managing transportation risk is made possible by shipment information realized at in-transit inspection points or through shipment monitoring technologies. We examine the impact of contingent sourcing and shipment information in a setting where a buyer can source from two com...
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作者:Pun, Chi Seng; Wang, Tianyu; Yan, Zhenzhen
作者单位:Nanyang Technological University; Columbia University
摘要:Problem definition: Nonstationarity of the random environment is a critical yet challenging concern in decision-making under uncertainty. We illustrate the challenge from the nonstationarity and the solution framework using the portfolio selection problem, a typical decision problem in a time-varying financial market. Methodology/Results: This paper models the nonstationarity by a regime-switching ambiguity set. In particular, we incorporate the time-varying feature of the stochastic environme...