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作者：Shen, Wenqi; Liu, Yan (Lucy); Wang, Yun (Alicia)
作者单位：Virginia Polytechnic Institute & State University; Texas A&M University System; Texas A&M University College Station; Mays Business School; City University of New York (CUNY) System; Baruch College (CUNY)
摘要：Existing research on online communities has primarily demonstrated that users are motivated by social rewards or social incentives such as positive social feedback and enhanced reputation. In contrast, this study examines how social penalties, or social disincentives, including negative social feedback and loss in reputation, influence online users' voluntary contributions in the short and long term. We develop empirical models to investigate reviewers' decisions on whether to contribute (i.e....
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作者：Dyer, Travis; Lang, Mark; Oh, Jun
作者单位：Brigham Young University; University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine; Purdue University System; Purdue University
摘要：We examine the effect of news media consolidation on local business coverage and its consequences for firms, investors, and capital markets. Using television transcripts, we find a substantial drop in coverage of local firms following the consolidation of local television stations associated with Sinclair acquisitions. Local information search, institutional portfolio local bias, and overall retail trading decrease for firms in treated geographic areas. Results are most pronounced for small fi...
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作者：Yan, Julia; Martin, Sebastien; Taylorc, Sean J.
作者单位：University of British Columbia; Northwestern University
摘要：On-demand ride-sharing aims to fulfill riders' transportation needs whenever and wherever they want. Although this service level appeals to riders, overall system efficiency can improve substantially if riders are willing to be flexible. Here, we explore riders' flexibility in space via walking to more accessible pickup locations. Ride-sharing platforms have traditionally implemented dynamic walking to optimize rider pickup locations and rider-driver assignment jointly. We propose an alternati...
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作者：Wang, Derui; Wu, Xiaole; Tang, Christopher S.; Dai, Yue
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; Fudan University; University of California System; University of California Los Angeles
摘要：We study endogenous merger decisions among three competing firms with asymmetric capacity: one large firm has ample capacity, and two small firms have limited capacity. Each firm can either operate independently or merge with another firm. Because of antitrust laws, all three firms merging is not permitted. When two firms merge, the merged entity and the remaining independent firm use the resulting capacity to capture their own loyal buyers and compete in price for price-sensitive disloyal swi...
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作者：Feng, Qi; Jiang, Zhibin; Liu, Jue; Shanthikumar, George; Yang, Yang
作者单位：Purdue University System; Purdue University; Shanghai Jiao Tong University; Nanjing University
摘要：We develop the operational data analytics (ODA) framework for the classical service design problem of G=G=c=k = G = c = k systems. The customer arrival rate is unknown. Instead, some historical data of interarrival times are collected. The data -integration model, specifying the mapping from the arrival data to the service rate, is formulated based on the time -scaling property of the stochastic service process. Validating the data -integration model against the long -run average service rewar...
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作者：Mao, Weichao; Zhang, Kaiqing; Zhu, Ruihao; Simchi-Levi, David; Basar, Tamer
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign; University System of Maryland; University of Maryland College Park; University System of Maryland; University of Maryland College Park; Massachusetts Institute of Technology (MIT)
摘要：We consider model-free reinforcement learning (RL) in nonstationary Markov decision processes. Both the reward functions and the state transition functions are allowed to vary arbitrarily over time as long as their cumulative variations do not exceed certain variation budgets. We propose Restarted Q-Learning with Upper Confidence Bounds (RestartQ-UCB), the first model-free algorithm for nonstationary RL, and show that it outperforms existing solutions in terms of dynamic regret. Specifically, ...
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作者：Holtz, David; Lobel, Felipe; Lobel, Ruben; Liskovich, Inessa; Aral, Sinan
作者单位：University of California System; University of California Berkeley; Massachusetts Institute of Technology (MIT); University of California System; University of California Berkeley; Airbnb; Massachusetts Institute of Technology (MIT)
摘要：Online marketplace designers frequently run randomized experiments to measure the impact of proposed product changes. However, given that marketplaces are inherently connected, total average treatment effect (TATE) estimates obtained through individual -level randomized experiments may be biased because of violations of the stable unit treatment value assumption, a phenomenon we refer to as interference bias. Cluster randomization (i.e., the practice of randomizing treatment assignment at the ...
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作者：Han, Pengfei; Liu, Chunrui; Tian, Xuan
作者单位：Peking University; University of International Business & Economics; Tsinghua University
摘要：We study how the market for technology (facilitated by the establishment of patent exchanges in China) affects innovation specialization. We find that the market for technology induces (i) specialization between patent buyers and sellers, (ii) specialization between patent licensors and licensees, and (iii) specialization based on a firm's research and development efficiency. All these three specialization patterns indicate that the market for technology promotes comparative advantage-based in...
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作者：Bonatti, Alessandro; Huang, Yunhao; Villas-Boas, J. Miguel
作者单位：Massachusetts Institute of Technology (MIT); University of Southern California; University of California System; University of California Berkeley
摘要：The growth of information technologies has intensified concerns about individual privacy and highlighted the importance of consumer privacy rights. At the same time, these technologies enable significant personalization of communications and offerings. We develop a theory of the effects of privacy based on the concavity of an individual's derived payoff function with respect to market beliefs: When this function is concave, privacy is valuable. We identify market conditions that lead to concav...
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作者：Neuhierl, Andreas; Tang, Xiaoxiao; Varneskov, Rasmus T.; Zhou, Guofu
作者单位：Purdue University System; Purdue University; University of Texas System; University of Texas Dallas; Copenhagen Business School; Danish Finance Institute; Washington University (WUSTL)
摘要：We provide a comprehensive analysis of option-implied information for predicting the cross-section of stock returns. Based on large sets of firm and option characteristics and using traditional portfolio sorts and modern high-dimensional methods, we find that option information matters. However, in contrast to existing studies, there are only a few option characteristics that have significant incremental predictive power after controlling for the large set of firm characteristics. Further anal...
