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作者：Liu, Ju; Liu, Changchun; Teo, Chung Piaw
作者单位：Xi'an Jiaotong University; National University of Singapore; National University of Singapore; Xi'an Jiaotong University
摘要：We develop a general framework for selecting a small pool of candidate solutions to maximize the chances that one will be optimal for a combinatorial optimization problem, under a linear and additive random payoff function. We formulate this problem using a two-stage distributionally robust model, with a mixed 0-1 semidefinite program. This approach allows us to exploit the diversification effect inherent in the problem to address how different candidate solutions can be selected to improve th...
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作者：Taiwo, Enayon Sunday; Savin, Sergei; Chen (Frank), Yuohua; Chin, Kwai-Sang
作者单位：University of Winnipeg; University of Pennsylvania; City University of Hong Kong
摘要：The aging population and increasing chronic disease load are rapidly changing the face of primary care delivery, with mid-level (e.g., nurse) practitioners providing growing proportion of patient care. Potential differences in the quality of care offered by physicians and nurse practitioners may affect patient preferences, thus leading to patient choice behavior. This paper focuses on the problem of appointment scheduling for physician-nurse teams in the presence of patient choice and no-shows...
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作者：Chen, Yiwei; Shi, Cong
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Temple University; University of Miami
摘要：We consider a general class of price-based network revenue management problems that a firm aims to maximize revenue from multiple products produced with multiple types of resources endowed with limited inventory over a finite selling season. A salient feature of our problem is that the firm does not know the underlying demand function that maps prices to demand rate, which must be learned from sales data. It is well known that for almost all classes of demand functions, such as linear, exponen...
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作者：Gao, Yuetao; Liu, Shaoxuan; Shen, Bo; Tan, Yinliang (Ricky)
作者单位：Xiamen University; Shanghai Jiao Tong University; Wuhan University; University of Houston System; University of Houston; Shanghai Jiao Tong University; Wuhan University
摘要：The proliferation of social networking platforms like Facebook, Twitter, Instagram, and TikTok has greatly facilitated social interactions among individuals, and thus their product consumption has become more visible to their peers. This enhanced visibility influences consumers' purchase decisions of luxury products because it affects social value derived from conspicuous consumption of these products. In this paper, we develop an analytical model to study the impact of such social technologie...
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作者：Guan, Huiqi; Yang (Ben), Zhibin; Gurnani, Haresh
作者单位：Fudan University; University of Oregon; Wake Forest University; Wake Forest University
摘要：We study the value of information in a supply chain where the manufacturer introduces a direct-selling channel to encroach in the retailer's market. Based on different information structures regarding the direct-selling cost for the manufacturer, we analyze three models: incomplete information model, asymmetric information model, and full information model. By comparing the firms' profits in these models, we derive the value of the manufacturer's information acquisition and the value of sharin...
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作者：Liu, Rong; Huang, Jujun; Zhang, Zhongju
作者单位：Stevens Institute of Technology; Arizona State University; Arizona State University-Tempe
摘要：The global economic disruption brought by COVID-19 crisis can set a stage for the prevalence of financial statement frauds, which jeopardize the efficient functioning of capital markets. In this paper, we propose a nuanced method to detect frauds by tracking granular changes in disclosures over time. Specifically, we first align paragraphs between consecutive disclosures by their similarities. This alignment can be solved as an optimization-based matching problem. Then we identify three types ...
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作者：Zhang, Minmin; Wang, Guihua; Li, Jun; Hopp, Wallace J.; Lee, David D.
作者单位：University of Texas System; University of Texas Dallas; University of Michigan System; University of Michigan; Loyola University Chicago
摘要：The coronavirus disease 2019 (COVID-19) pandemic has disrupted normal operating procedures at transplant centers. With the possibility that COVID-19 infection carries an overall 4% mortality rate and potentially a 24% mortality rate among the immunocompromised transplant recipients, many transplant centers considered the possibility of slowing down and even potentially pausing all transplants. Many proposals regarding the need for pausing organ transplants exist; however, much remains unknown....
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作者：Kouvelis, Panos; Chen, Xingxing; Xia, Yu
作者单位：Washington University (WUSTL); University of Richmond; William & Mary; Washington University (WUSTL)
摘要：We consider a two-stage project supply chain with a downstream project firm producing an engineer-to-order (ETO) complex product or a make-to-order (MTO), low-volume, customized industrial product as a project, and an upstream contract supplier supplying a key material to the project. The project faces two uncertainties: project activity time uncertainty and material consumption uncertainty, which may be positively or negatively correlated. In anticipation of these uncertainties, the project f...
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作者：Rijal, Arpan; Bijvank, Marco; de Koster, Rene
作者单位：University of Groningen; University of Calgary; Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; University of Groningen
摘要：When scheduling the distribution of ordered items from a warehouse to customers, the transportation planning is generally done first and serves as input for planning warehouse operations. Such a sequential approach can lead to substantial inefficiencies when the customer deliveries are restricted by time windows, and the warehouse has limited resources available (both order pickers and space in the staging area). This paper studies the trade-offs between warehouse operations and transportation...
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作者：Liu, Che-Wei; Yang, Mochen; Wen, Ming-Hui
作者单位：Indiana University System; Indiana University Bloomington; IU Kelley School of Business; University of Minnesota System; University of Minnesota Twin Cities
摘要：As financial institutions increasingly offer robo-advisors (RAs) as a service, the empirical evidence on their performance, particularly during market downturns, remains limited. We study the impact of using RAs on investment performance during the 2020 financial crisis caused by the COVID-19 global pandemic. We obtain daily portfolio and transaction data of investors on an online investment platform. Besides making investment decisions by themselves, investors can also leverage an RA system o...
