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作者：Adamopoulos, Panagiotis (Panos)
作者单位：Emory University
摘要：As the prevalence of user-generated reviews has been growing, the pervasiveness of fraudulent reviews has been increasing as well. In an effort to alleviate the consequences of fraudulent reviews, platforms have been using machine-learning algorithms for fraudulent review detection. However, the current business practice of simply removing fraudulent reviews might not be sufficient, as even their temporary presence might forge spillover effects propagating through other shopping tools. In part...
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作者：Ozbay, Eren; Kamble, Vijay
作者单位：University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital
摘要：In several applications of the stochastic multiarmed bandit problem, the traditional objective of maximizing the expected total reward can be inappropriate. In this paper, we study a new objective in the classic setup. Given K arms, instead of maximizing the expected total reward from T pulls (the traditional sum objective), we consider the vector of total rewards earned from each of the K arms at the end of T pulls and aim to maximize the expected highest total reward across arms (the max obj...
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作者：Jiang, Hao; Khanna, Naveen; Yang, Qian; Zhou, Jiayu
作者单位：Michigan State University; Michigan State University's Broad College of Business; McMaster University; Michigan State University
摘要：Cyber risk is an important emerging source of risk in the economy. To estimate its impact on the asset market, we use machine learning techniques to develop a firm-level measure of cyber risk. The measure aggregates information from a rich set of firm characteristics and shows superior ability to forecast future cyberattacks on individual firms. We find that firms with higher cyber risk earn higher average stock returns. When these firms underperform, cybersecurity experts tend to have higher ...
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作者：Mohan, Vijay; Khezr, Peyman; Berg, Chris
作者单位：Royal Melbourne Institute of Technology (RMIT); Royal Melbourne Institute of Technology (RMIT)
摘要：In this paper, we examine the usefulness of time commitment as a voting resource for decentralized governance when the identity of voters cannot be verified. In order to do so, we take a closer look at two issues that confront token -based voting systems used by blockchain communities and organizations: voter fraud through the creation of multiple identities (Sybil attack) and concentration of voting power in the hands of the wealthy (plutocracy). Our contribution is threefold: first, we lay a...
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作者：Bushong, Benjamin; Gagnon-Bartsch, Tristan
作者单位：Michigan State University; State University System of Florida; Florida State University
摘要：Using a real -effort experiment, we show that people project their current tastes onto others when forecasting others' behavior, even when their tastes are exogenously manipulated and transparently different. In the first part of our experiment, workers stated their willingness to continue working on a tedious task. We varied how many initial tasks workers completed before eliciting their willingness to work (WTW); some were relatively fresh when stating their WTW, whereas others were relative...
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作者：Baek, Jackie; Farias, Vivek F.
作者单位：New York University; Massachusetts Institute of Technology (MIT)
摘要：Exploration is often necessary in online learning to maximize long-term rewards, but it comes at the cost of short-term regret. We study how this cost of exploration is shared across multiple groups. For example, in a clinical trial setting, patients who are assigned a suboptimal treatment effectively incur the cost of exploration. When patients are associated with natural groups on the basis of, say, race or age, it is natural to ask whether the cost of exploration borne by any single group i...
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作者：Han, Pengfei; Jiang, Wei; Mei, Danqing
作者单位：Peking University; Emory University; National Bureau of Economic Research; European Corporate Governance Institute
摘要：We develop measures of technology decoupling and dependence between the United States and China based on combined patent data. The first two decades of the century witnessed a steady increase in technology integration (or less decoupling), but China's dependence on the United States increased (decreased) during the first (second) decade. Firms covered by China's Strategic Emerging Industries policies became less decoupled with the United States, gained cash flows, and gained valuation, but the...
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作者：Begley, Taylor A.; Gurun, Umit G.; Purnanandam, Amiyatosh; Weagley, Daniel
作者单位：University of Kentucky; University of Texas System; University of Texas Dallas; University of Michigan System; University of Michigan; University System of Georgia; Georgia Institute of Technology
摘要：We find the Small Business Administration's disaster -relief home loan program denies significantly more loans in areas with larger shares of minorities, subprime borrowers, and higher income inequality. We find that risk -insensitive loan pricing, a feature present in many regulated and government -run lending programs, is an important driver of these disparities in access to credit. The differences in denial rates are disproportionately high compared with private -market lending and governme...
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作者：Roche, Maria P.; Oettl, Alexander; Catalini, Christian
作者单位：Harvard University; University System of Georgia; Georgia Institute of Technology; National Bureau of Economic Research; Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT)
摘要：We examine the influence of physical proximity on between -start-up knowledge spillovers at one of the largest technology coworking hubs in the United States. Relying on the exogenous assignment of office space to the hub's 251 start-ups, we find that proximity positively influences knowledge spillovers as proxied by the likelihood of adopting an upstream web technology already used by a peer start-up. This effect is largest for startups within close proximity of each other and quickly decays;...
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作者：Kundu, Amrita; Anderson, Stephen J.; Ramdas, Kamalini
作者单位：Georgetown University; Texas A&M University System; Texas A&M University College Station; Mays Business School; University of London; London Business School
摘要：We study the impact of firm-specific business disruptions on the performance of small emerging market firms and test the effectiveness of building in redundancies to buffer against disruptions. Managerial disruptions result in the absence of the entrepreneurowner, whereas operational disruptions lead to a shortage of critical resources, for example, inventory or electricity. We propose the use of relational redundancy-that is, the availability of a trusted and capable person with whom the entr...
