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作者：Xie, Yaqi; Ma, Will; Xin, Linwei
作者单位：University of Chicago; Columbia University
摘要：Real-time decisions are usually irrevocable in many contexts of online decision making. One common practice is delaying real-time decisions so that the decision maker can gather more information to make better decisions. For example, in online retailing, there is typically a time delay between when an online order is received and when it gets picked and assembled for shipping. However, decisions cannot be delayed forever. In this paper, we study this fundamental trade-off and aim to theoretica...
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作者：Li, Xingyi; Deng, Yiting; Manchanda, Puneet; De Reyck, Bert
作者单位：University of London; University College London; University of Michigan System; University of Michigan; Singapore Management University
摘要：Expert opinion exerts tremendous influence on the purchase journey, but its effect on overall consumer experience is ambiguous because it can give rise to both expectation and reputation effects. This paper explores the effect of expert opinions on consumer experience via the lens of consumer reviews in the restaurant industry, where the expert opinions are conveyed by Michelin stars. The paper uses a unique data set based on the Michelin Guide for Great Britain & Ireland from 2010 to 2020. Th...
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作者：Bravo, Fernanda; Gandhi, Ashvin; Hu, Jingyuan; Long, Elisa F.
作者单位：University of California System; University of California Los Angeles; University of California System; University of California Irvine
摘要：Geographic inequalities in healthcare access extend beyond rural-urban divides include socioeconomic, racial, and other disparities. Proximity to hospitals, clinics, healthcare providers, and pharmacies varies widely, posing a challenge in deciding where strategically locate such facilities. Demand for each service depends on local population health, individual preferences, provider capacity, and other factors. This study introduces a novel structural estimate-then-optimize (SETO) framework, c...
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作者：Cuculiza, Carina; Kumar, Alok; Xin, Wei; Zhang, Chendi
作者单位：University of Kansas; University of Miami; University of Exeter; University of Exeter
摘要：We examine the relation between temperature changes and firm performance using a novel time-varying measure of firm-level temperature sensitivity. We find that firms with higher temperature sensitivity have lower future profitability and riskier corporate policies. These firms are also overpriced and earn lower average future returns as market participants are slow to correct the mispricing. Nonlocal institutional investors allocate higher portfolio weights to firms with high temperature sensi...
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作者：Bhargava, Hemant; Dubus, Antoine; Ronayne, David; Shekhar, Shiva
作者单位：University of California System; University of California Davis; Swiss Federal Institutes of Technology Domain; ETH Zurich; Tilburg University
摘要：Large, generalist, technology firms-so-called big-tech firms-powerful in their primary market, routinely enter secondary markets consisting of specialist firms. Naturally, one might expect a specialist firm to be fiercely protective of its data as a way to maintain its market position in the secondary market. Counter to this intuition, we demonstrate that a specialist firm willingly shares its market data with an intruding generalist. We do so by developing a model of cross-market competition ...
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作者：Zhao, Xuejun; Jia, Justin; Zhao, Hui
作者单位：University of North Carolina; University of North Carolina Charlotte; University of Tennessee System; University of Tennessee Knoxville; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park
摘要：Generic drug shortages have posed significant challenges to the U.S. pharmaceutical industry and the government for two decades, causing severe consequences and drawing widespread attention. Substantial efforts have been devoted to identifying the causes, with some linking shortages to Medicare's adoption of the average sales price (ASP) policy for hospital drug reimbursement. However, little research has captured the connections among reimbursement policies, shortages, and the influence of gr...
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作者：Simchi-Levi, David; Wang, Chonghuan
作者单位：Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); University of Texas System; University of Texas Dallas
摘要：This article may be used only for the purposes of research, teaching, and/or private study. Commercial use or systematic downloading (by robots or other automatic processes) is prohibited without explicit Publisher approval, unless otherwise noted. For more information, contact permissions@informs.org. The Publisher does not warrant or guarantee the article's accuracy, completeness, merchantability, fitness inclusion of an advertisement in this article, neither constitutes nor implies a guaran...
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作者：Bellet, Clement S.; Dubois, David; Godart, Frederic
作者单位：Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; INSEAD Business School
摘要：This paper explores whether and how consumers respond to global social movements challenging systemic discrimination and stereotypes. We examine the impact of the #MeToo movement on the market for products with stereotypical markers of femininity. Our analysis of high-frequency stockout and price data from a leading global fashion retailer spans from January 2017 to December 2018 and covers 32 countries, or 89% of the Organization for Economic Cooperation and Development (OECD) population. Usi...
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作者：Hu, Yiqun; Liu, Limeng; Simchi-Levi, David; Yan, Zhenzhen
作者单位：Nanyang Technological University; Massachusetts Institute of Technology (MIT)
摘要：A mixture of multinomial logits (mixed multinomial logit (MMNL)) generalizes the multinomial logit model, which is commonly used in modeling market demand to capture consumer heterogeneity. Although extensive algorithms have been developed in the literature to learn MMNL models, theoretical results are limited. Built on the Frank-Wolfe (FW) method, we propose a new algorithm that learns both mixture weights and componentspecific logit parameters with provable convergence guarantees for an arbi...
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作者：Eberhardt, Frederick; Kaynar, Nur; Siddiq, Auyon
作者单位：California Institute of Technology; Cornell University; University of California System; University of California Los Angeles
摘要：We propose a new optimization-based method for learning causal structures from observational data, a process known as causal discovery. Our method takes as input observational data over a set of variables and returns a graph in which causal relations are specified by directed edges. We consider a highly general search space that accommodates latent confounders and feedback cycles, which few extant methods do. We formulate the discovery problem as an integer program, and propose a solution tech...
