Operations Research

最新文章

• The Analytics of Bed Shortages: Coherent Metric, Prediction, and Optimization AI翻译
  作者：Xie, Jingui; Loke, Gar Goei; Sim, Melvyn; Lam, Shao Wei
  作者单位：Technical University of Munich; Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; National University of Singapore
  摘要：Bed shortages in hospitals usually have a negative impact on patient satisfaction and medical outcomes. In practice, healthcare managers often use bed occupancy rates (BORs) as a metric to understand bed utilization, which is insufficient in capturing the risk of bed shortages. We propose the bed shortage index (BSI) to capture more facets of bed shortage risk than traditional metrics such as the occupancy rate, the probability of shortages, and expected shortages. The BSI is based on the risk...
• Data-Driven Hospital Admission Control: A Learning Approach AI翻译
  作者：Zhalechian, Mohammad; Keyvanshokooh, Esmaeil; Shi, Cong; Van Oyen, Mark P.
  作者单位：Indiana University System; Indiana University Bloomington; IU Kelley School of Business; Texas A&M University System; Texas A&M University College Station; Mays Business School; University of Miami; University of Michigan System; University of Michigan
  摘要：The choice of care unit upon admission to the hospital is a challenging task because of the wide variety of patient characteristics, uncertain needs of patients, and limited number of beds in intensive and intermediate care units. The care unit placement decisions involve capturing the trade-off between the benefit of better health outcomes versus the opportunity cost of reserving higher level of care beds for potentially more complex patients arriving in the future. By focusing on reducing th...
• Exit Spirals in Coupled Networked Markets AI翻译
  作者：Aymanns, Christoph; Georg, Co-Pierre; Golubc, Benjamin
  作者单位：Universite Catholique de Lille; EDHEC Business School; Northwestern University
  摘要：Strategic agents choose whether to be active in networked markets. The value of being active depends on the activity choices of specific counterparties. Several markets are coupled when agents' participation decisions are complements across markets. We model the problem of an analyst assessing the robustness of coupled networked markets during a crisis-an exogenous negative payoff shock-based only on partial information about the network structure. We give conditions under which exit spirals e...
• Learning Product Rankings Robust to Fake Users AI翻译
  作者：Golrezaei, Negin; Manshadi, Vahideh; Schneider, Jon; Sekard, Shreyas
  作者单位：Massachusetts Institute of Technology (MIT); Yale University; Alphabet Inc.; Google Incorporated; University of Toronto; University Toronto Scarborough; University of Toronto
  摘要：In many online platforms, customers' decisions are substantially influenced by product rankings as most customers only examine a few top-ranked products. This induces a race for visibility among sellers, who may be incentivized to artificially inflate their position by employing fake users as exemplified by the emergence of click farms. Motivated by such fraudulent behavior, we study the problem of learning product rankings when a platform faces a mixture of real and fake users who are indisti...
• Technical Note-Bidding in Multidimensional Auctions When the Qualities of All Bidders Matter AI翻译
  作者：Lorentziadis, Panos L.
  作者单位：Athens University of Economics & Business
  摘要：In multidimensional auctions, bidders compete in both quality and price, which are combined by a score rule. A well-known problem in procurement management is that nonprice attributes are often poorly measured and unreliably estimated. Adjustments of the reported quality based on the qualities of rival bids can enhance the reliability of the measurement process. We develop a general model of score function that is dependent on the qualities offered by all bidders who differ in terms of their p...
• Multiobjective Optimization for Politically Fair Districting: A Scalable Multilevel Approach AI翻译
  作者：Swamy, Rahul; King, Douglas M.; Jacobson, Sheldon H.
  作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign
  摘要：Political districting in the United States is a decennial process of redrawing the boundaries of congressional and state legislative districts. The notion of fairness in political districting has been an important topic of subjective debate, with district plans affecting a wide range of stakeholders, including the voters, candidates, and political parties. Even though districting as an optimization problem has been well studied, existing models primarily rely on nonpolitical fairness measures ...
• Joint Assortment Optimization and Customization Under a Mixture of Multinomial Logit Models: On the Value of Personalized Assortments AI翻译
  作者：El Housni, Omar; Topaloglu, Huseyin
  摘要：We consider a joint assortment optimization and customization problem under a mixture of multinomial logit models. In this problem, a firm faces customers of different types, each making a choice within an offered assortment according to the multinomial logit model with different parameters. The problem takes place in two stages. In the first stage, the firm picks an assortment of products to carry the subject to a cardinality constraint. In the second stage, a customer of a certain type arriv...
• Differential Privacy in Personalized Pricing with Nonparametric Demand Models AI翻译
  作者：Chen, Xi; Miao, Sentao; Wang, Yining
  作者单位：New York University; McGill University; University of Texas System; University of Texas Dallas
  摘要：In recent decades, the advance of information technology and abundant personal data facilitate the application of algorithmic personalized pricing. However, this leads to the growing concern of potential violation of privacy because of adversarial attack. To address the privacy issue, this paper studies a dynamic personalized pricing problem with unknown nonparametric demand models under data privacy protection. Two concepts of data privacy, which have been widely applied in practices, are int...
• Preface to Special Issue on Computational Advances in Short-Term Power System Operations AI翻译
  作者：Baldick, Ross; Low, Steven; O'Neill, Richard; Ralph, Daniel; Zakeri, Golbon
  作者单位：University of Texas System; University of Texas Austin; California Institute of Technology; United States Department of Energy (DOE); Advanced Research Projects Agency-Energy (ARPA-E); University of Cambridge; University of Massachusetts System; University of Massachusetts Amherst
• Optimal Subscription Planning for Digital Goods AI翻译
  作者：Alaei, Saeed; Makhdoumi, Ali; Malekian, Azarakhsh
  作者单位：Alphabet Inc.; Google Incorporated; Duke University; University of Toronto
  摘要：We consider a media service provider that gives users access to digital goods through subscription. In our model, different types of users with heterogeneous usage rates repeatedly use a platform over a period of time. There are multiple item types on the platform, and the value of an item to a user is random and depends on both the user type and the item type. The design of the platform's subscription planning comprises selecting a subscription fee for each set of item types. Before the begin...