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作者：Rusmevichientong, Paat; Sumida, Mika; Topaloglu, Huseyin; Bai, Yicheng
作者单位：University of Southern California
摘要：We study revenue management problems with heterogeneous resources, each with unit capacity. An arriving customer makes a booking request for a particular interval of days in the future. We offer an assortment of resources in response to each booking request. The customer makes a choice within the assortment to use the chosen resource for her desired interval of days. The goal is to find a policy that determines an assortment of resources to offer to each customer to maximize the total expected...
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作者：Aouad, Ali; Segev, Danny
作者单位：University of London; London Business School; Tel Aviv University
摘要：We study the dynamic assortment planning problem under the widely utilized multinomial logit choice model (MNL). In this single-period assortment optimization and inventory management problem, the retailer jointly decides on an assortment, that is, a sub-set of products to be offered, as well as on the inventory levels of these products, aiming to maximize the expected revenue subject to a capacity constraint on the total number of units stocked. The demand process is formed by a stochastic st...
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作者：Han, Eojin; Bandi, Chaithanya; Nohadani, Omid
作者单位：Southern Methodist University; National University of Singapore
摘要：In many real applications, practitioners prefer policies that are interpretable and easy to implement. This tendency is magnified in sequential decision-making settings. In this paper, we leverage the concept of finite adaptability to construct policies for two-stage optimization problems. More specifically, we focus on the general setting of distributional uncertainties affecting the right-hand sides of constraints, because in a broad range of applications, uncertainties do not affect the obj...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
