6期

最新文章

• Vertical Integration and Market Power in Supply Networks AI翻译
  作者：Arora, Kashish; Singh, Amandeep; Sahare, Mamta
  作者单位：Chinese University of Hong Kong; Indian Institute of Management (IIM System); Indian Institute of Management Indore
  摘要：Problem definition: Vertical integration, a strategic approach where firms control multiple stages of production and distribution, offers potential operational efficiencies and market power. Although the operations management (OM) literature has emphasized its benefits for supply chain coordination and cost savings, antitrust studies raise concerns about how vertical mergers may enable dominant firms to limit competition by creating entry barriers and harming consumer welfare. Despite extensiv...
• Optimal Capacity and Price Designs Under Ex Ante and Ex Post Theft AI翻译
  作者：Chen, Mingliu; Tian, Feng; Zuo, Ruiting
  作者单位：University of Texas Dallas; University of Texas System; University of Texas Dallas; University of Hong Kong
  摘要：Problem definition: Internal theft poses a significant challenge in retail firms' operations. Owing to a lack of effective monitoring tools, a firm cannot observe every action in daily operations of its employees, providing opportunity for wrongdoing, such as capacity and cash stealing. As a result, a common practice is to increase the price of goods to offset the loss in revenue due to the increasing threat of theft. However, we show that such practices are not optimal. Methodology/results: W...
• A Two-Part Machine Learning Approach to Characterizing Network Interference in A/B Testing AI翻译
  作者：Yuan, Yuan; Altenburger, Kristen M.
  作者单位：University of California System; University of California Davis
  摘要：Problem definition: The reliability of controlled experiments, commonly referred to as A/B tests, is often compromised by network interference, where the outcomes of individual units are influenced by interactions with others. Significant challenges in this domain include the lack of accounting for complex social network structures and the difficulty in suitably characterizing network interference. Methodology/results: To address these challenges, we propose a machine learning-based method. We...
• Stability of Procurement Networks AI翻译
  作者：Chiong, Khai; Qi, Anyan
  作者单位：University of Texas System; University of Texas Dallas
  摘要：Problem definition: Given an observed procurement network, we characterize when the network structure is rationalizable as pairwise stable-that there exist preferences such that no pairs of buyers and suppliers would deviate from the existing network structure. Methodology/results: We show that the Weak Axiom of Revealed Pairwise Stability (WARPS) is a necessary and sufficient testable condition for pairwise stability. WARPS is an algorithm that checks whether a link can be added to the networ...
• Early Detection of Opioid Over-Procurement: A Semisupervised Machine Learning Approach AI翻译
  作者：Bertsimas, Dimitris; Fazel-Zarandi, Mohammad M.; Ivanhoe, Joshua; Petridis, Periklis
  作者单位：Massachusetts Institute of Technology (MIT)
  摘要：Problem definition: The misuse of prescription opioids over the past two decades has emerged as a leading factor contributing to the decline in life expectancy in the United States. This study introduces a machine learning model designed to identify instances of illegal diversion within the prescription drug supply chain in the United States. Methodology/results: We introduce a semisupervised machine learning model aimed at identifying pharmacies involved in excessive procurement of prescripti...
• Machine Learning-Augmented Optimization of Large Bilevel and Two-Stage Stochastic Programs: Application to Cycling Network Design AI翻译
  作者：Chan, Timothy C. Y.; Lin, Bo; Saxe, Shoshanna
  作者单位：University of Toronto; University of Toronto
  摘要：Problem definition: A wide range of decision problems can be formulated as bilevel programs with independent followers, which, as a special case, include two-stage stochastic programs. These problems are notoriously difficult to solve, especially when a large number of followers are present. Motivated by a real-world cycling infrastructure planning application, we present a general approach to solving such problems. Methodology/results: We propose an optimization model that explicitly consider...
• Leveraging Consensus Effect to Optimize Ranking in Online Discussion Boards AI翻译
  作者：Allon, Gad; Carlstein, Joseph; Gur, Yonatan
  作者单位：University of Pennsylvania; Netflix, Inc.
  摘要：Problem definition: Online discussion platforms (often referred to as discussion boards) are designed for facilitating remote discussions between users. To stimulate engagement (e.g., participation in the discussion), these platforms offer arriving users a ranked list of existing discussion comments. In this paper, we formalize the level of consensus in the discussion and study its impact on engagement and how it could be leveraged by ranking algorithms to increase engagement along the discuss...
• Sourcing Innovation: When to Own and When to Control Your Supplier AI翻译
  作者：Chen, Zhi; Mihm, Jurgen; Schlapp, Jochen
  作者单位：National University of Singapore; National University of Singapore; INSEAD Business School; Frankfurt School Finance & Management
  摘要：Problem definition: Many firms rely on their suppliers as a source of innovation, and they harness the innovation potential of their supplier base by organizing procurement contests. Most research on contests has simply assumed that suppliers are independent from the buyer and thus compete on even ground. In practice, however, this assumption is not always valid because some suppliers may be affiliated with or even controlled by the buyer. This paper seeks to understand how (varying degrees of...
• Robust Capacity Planning with General Upgrading AI翻译
  作者：Hao, Zhaowei; He, Long; Hu, Zhenyu; Jiang, Jun
  作者单位：Dongbei University of Finance & Economics; George Washington University; National University of Singapore; National University of Singapore; National University of Singapore; National University of Singapore
  摘要：Problem definition: General upgrading is a strategy by which a firm can upgrade a customer to any higher-end product whenever a lower-end product is out of stock. In this paper, we consider the capacity planning problem of deciding the initial capacity for multiple products to maximize the expected total profit when general upgrading is allowed. Methodology/results: We formulate the problem as a two-stage distributionally robust optimization (DRO) model under the commonly employed ambiguity se...
• Coordination for Assembly AI翻译
  作者：Zhang, Wen; Shokoohyar, Sina; Qi, Anyan; Katok, Elena
  作者单位：Baylor University; Seton Hall University; University of Texas System; University of Texas Dallas
  摘要：Problem definition: Modern assembly projects usually involve many interrelated tasks outsourced to suppliers/contractors, and the project outcome depends on all contractors' minimum effort level. To mitigate risks in such projects, the original equipment manufacturer (OEM) often uses a risk-sharing contract, under which the payment to the contractors depends on the minimum effort level. The question of how to structure supply contracts in such settings is the focus of our study. Methodology/re...