-
作者：D'Aeth, Josh C.; Ghosal, Shubhechyya; Grimm, Fiona; Haw, David; Koca, Esma; Lau, Krystal; Liu, Huikang; Moret, Stefano; Rizmie, Dheeya; Smith, Peter C.; Forchini, Giovanni; Miraldo, Marisa; Wiesemann, Wolfram
作者单位：Imperial College London; Imperial College London; Imperial College London; Imperial College London; Imperial College London; Shanghai University of Finance & Economics; Umea University
摘要：The COVID-19 pandemic has seen dramatic demand surges for hospital care that have placed a severe strain on health systems worldwide. As a result, policy makers are faced with the challenge of managing scarce hospital capacity to reduce the backlog of non-COVID patients while maintaining the ability to respond to any potential future increases in demand for COVID care. In this paper, we propose a nationwide prioritization scheme that models each individual patient as a dynamic program whose st...
-
作者：Bae, Joon Woo; Belo, Frederico; Li, Jun; Lin, Xiaoji; Zhao, Xiaofei
作者单位：University System of Ohio; Case Western Reserve University; INSEAD Business School; Centre for Economic Policy Research - UK; University of Texas System; University of Texas Dallas; University of Minnesota System; University of Minnesota Twin Cities; Georgetown University
摘要：We evaluate the impact of complexity and information content of 10-K filings on uncertainty dynamics following the filings. We have three main findings. First, the option-implied volatility on average increases in the first four weeks after the filings, followed by a net decrease in the subsequent six weeks. Second, this hump-shaped volatility dynamic is more pronounced for firms with larger 10-K file sizes. Third, we provide a novel decomposition of 10-K file size based on the individual sect...
-
作者：Bahar, Dany; Choudhury, Prithwiraj; Kim, Do Yoon; Koo, Wesley W.
作者单位：Brown University; Harvard University; Boston College; INSEAD Business School
摘要：We study whether, when, and how better connectivity through nonstop flights leads to positive innovation outcomes for firms in the global context. Using unique data of all flights emanating from 5,015 airports around the globe from 2005 to 2015 and exploiting a regression discontinuity framework, we report that a 10% increase in nonstop flights between two locations leads to a 3.4% increase in citations and a 1.4% increase in the production of collaborative patents between those locations. Thi...
-
作者：Ceyhan, Gokhan; Koksalan, Murat; Lokman, Banu
作者单位：Middle East Technical University; University of Michigan System; University of Michigan; University of Portsmouth
摘要：We consider a class of three-objective mixed-integer linear programs (MILPs) where at least one of the objective functions takes only discrete values. These problems commonly occur in MILPs where one or more of the three objective functions contain only integer decision variables. In such problems, the nondominated set consists of the union of nondominated edges and individual nondominated points. The nondominated edges can provide valuable insights on the trade-offs between the two continuous...
-
作者：Avinadav, Tal; Shamir, Noam
作者单位：Bar Ilan University; Tel Aviv University
摘要：Partial vertical ownership describes a situation in which a firm holds financial shares in either its supplier (referred to as partial backward integration) or its customer (partial forward integration). We study the effect of such financial interconnectedness on two operational decisions: capacity investment and information exchange. In our model, a retailer, who has superior information about the future market demand, has passive financial holdings in the supplier. Although this passive fina...
-
作者：Braggion, Fabio; Manconi, Alberto; Zhu, Haikun
作者单位：Tilburg University; Bocconi University; Erasmus University Rotterdam; Erasmus University Rotterdam - Excl Erasmus MC
摘要：We study the relationship between new intermediaries and regulatory arbitrage, analyzing marketplace credit around a tightening of mortgage loan-to-value (LTV) caps in several cities in China in 2013. Using novel data covering over 20% of Chinese marketplace credit as well as the universe of loans and loan applications at a leading online lending platform, we provide evidence consistent with home buyers borrowing online to bypass the tighter LTV cap. Our findings point to new, lightly regulate...
-
作者：Xu, Yuqian; Lu, Baile; Ghose, Anindya; Dai, Hongyan; Zhou, Weihua
作者单位：University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine; National University of Defense Technology - China; New York University; Central University of Finance & Economics; Zhejiang University
摘要：On-demand delivery through sharing platforms represents a rapidly expanding segment of the global workforce. The emergence of sharing platforms enables gig workers to choose when and where to work, allowing them to do so in a flexible manner. However, such flexibility brings notorious challenges to platforms in managing the gig workforce. Thus, understanding the incentive and behavioral issues of gig workers in this new business model is inherently meaningful. This paper investigates how the i...
-
作者：Li, Yifu; Ryan, Christopher Thomas; Shengc, Lifei
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; University of British Columbia; University of Houston System; University of Houston; University of Houston Clear Lake
摘要：An important problem in single-player video game design is how to sequence game elements within a level (or chunk) of the game. Each element has two critical features: a reward (e.g., earning an item or being able to watch a cinematic) and a degree of difficulty (e.g., how much energy or focus is needed to interact with the game element). The latter property is a distinctive feature in video games. Unlike passive services (like a trip to the spa) or passive entertainment (like watching sports ...
-
作者：Cheung, Wang Chi; Simchi-Levi, David; Zhu, Ruihao
作者单位：National University of Singapore; Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); Cornell University
摘要：Motivated by operations research applications, such as inventory control and real-time bidding, we consider undiscounted reinforcement learning in Markov decision processes under model uncertainty and temporal drifts. In this setting, both the latent reward and state transition distributions are allowed to evolve over time, as long as their respective total variations, quantified by suitable metrics, do not exceed certain variation budgets. We first develop the sliding window upper confidence ...
-
作者：Papanastasiou, Yiangos; Yang, S. Alex; Zhang, Angela Huyue
作者单位：University of California System; University of California Berkeley; University of London; London Business School; University of Hong Kong
摘要：We study the relative merits of different dispute resolution mechanisms in two-sided platforms in the context of disputes involving malicious reviews and blackmail. We develop a game-theoretic model of the strategic interactions between a seller and a (potentially malicious) consumer. In our model, the seller takes into account the impact of consumer reviews on his future earnings; recognizing this, a malicious consumer may attempt to blackmail the seller by purchasing the product, posting a n...
