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作者：Georghiou, Angelos; Tsoukalas, Angelos; Wiesemann, Wolfram
作者单位：University of Cyprus; Erasmus University Rotterdam; Erasmus University Rotterdam - Excl Erasmus MC; Imperial College London
摘要：We propose conditions under which two-stage distributionally robust optimization problems are optimally solved in affine or K-adaptable affine decision rules. Contrary to previous work, our conditions do not impose any structure on the support of the uncertain parameters, and they ensure pointwise (as opposed to worst case) optimality of (K-adaptable) affine decision rules. The absence of support restrictions allows us to transfer nonlinearities from the problem description to the support via ...
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作者：Bockstedt, Jesse C.; Buckman, Joseph R.
作者单位：Emory University; University System of Georgia; Georgia State University
摘要：As artificial intelligence (AI) tools have become pervasive in business applications, so too have interactions between AI and humans in business processes and decisionmaking. A growing area of research has focused on human decision and task delegation to AI assistants. Simultaneously, extensive research on algorithm aversion-humans' resistance to algorithm-based decision tools-has demonstrated potential barriers and issues with AI applications in business. In this paper, we test a simple strat...
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作者：Lagzi, Saman; Chen, Ningyuan; Milner, Joseph
作者单位：University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine; University of Toronto; University Toronto Mississauga
摘要：We propose deep neural networks for data-driven stochastic optimization. Using historical data (covariates, decisions, costs), we propose to train a neural network to predict the objective value as a function of both the decision and covariate. After training, for a given covariate, this predicted objective is optimized over the decision variables using gradient-based methods with analytical gradients and Hessians. Performance is characterized by neural network generalization bounds. Comprehen...
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作者：Palley, Thomas S.; Jose, Victor Richmond R.; Palley, Asa B.; Keeney, Ralph L.; Juric, Mario
作者单位：Harvard University; Georgetown University; University of Virginia; Duke University; University of Washington; University of Washington Seattle
摘要：Asteroids and other near-Earth objects pose a significant ongoing threat to our planet with the potential for catastrophic effects on human life, the environment, and the global economy. Advance warning would be necessary to deflect any object on a collision course with Earth, but detection and tracking technologies require substantial financial commitments. This paper presents a multiattribute utility framework to analyze whether and which detection technologies are worthwhile. This approach ...
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作者：Zhang, Minmin; Wang, Guihua; Dai, Tinglong
作者单位：Harvard University; Kansas State University; University of Texas System; University of Texas Dallas; Johns Hopkins University; Johns Hopkins University; Johns Hopkins University
摘要：Kidney transplantation is a life-saving procedure for patients with end-stage kidney disease. A delay in kidney transplantation has serious, even life-threatening, consequences. This study examines the impact of suspending nonessential surgery on deceased-donor kidney transplantation. Between March and April 2020, amid the COVID-19 pandemic, multiple states in the United States temporarily suspended nonessential surgery. Although these suspensions were not intended for deceased-donor kidney tr...
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作者：Greene, Daniel; Hwang, JiHoon; Intintoli, Vincent J.; Kahle, Kathleen M.
作者单位：Clemson University; University of Mississippi; University of Arizona
摘要：Prior studies draw mixed conclusions on the market response to California SB 826, the first board gender diversity mandate in the United States. We find that these discrepancies stem from two factors: confusion about the legislative process and the use of different return methodologies. We find that the response to early dates in the legislative process yields largely insignificant and sometimes conflicting results, depending on the return methodology used. This result is consistent with our f...
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作者：Jiang, Bo; Wang, Zizhuo; Zhang, Nanxi
作者单位：Shanghai University of Finance & Economics; Shanghai University of Finance & Economics; Shanghai University of Finance & Economics; The Chinese University of Hong Kong, Shenzhen; Western University (University of Western Ontario)
摘要：Many online platforms adopt a price alert mechanism to facilitate customers tracking price changes. This mechanism allows customers to register their valuation with the system if they find the price higher than their valuation. Once the price drops below the customers' registered price, a message is sent to notify customers. This paper formulates the interaction between the seller and customers as a Markov decision process. We assume customers are patient and are willing to wait for K addition...
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作者：Li, Kai; Mai, Feng; Wong, Gabriel; Yang, Chelsea; Zhang, Tengfei
作者单位：University of British Columbia; University of Iowa; Cardiff University; Rutgers University System; Rutgers University Camden; Rutgers University New Brunswick
摘要：This paper examines the impact of female analyst coverage on firms' environmental and social (E&S) performance. Exploiting broker closures as a quasi-exogenous shock to analyst coverage, we find that firms experiencing an exogenous decline in female analyst coverage subsequently show a significantly larger drop in E&S scores than those experiencing an equivalent decline in male analyst coverage. To explore the underlying mechanisms, we develop novel machine-learning models to analyze more than...
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作者：Varma, Sushil Mahavir; Castro, Francisco; Maguluri, Siva Theja
作者单位：University System of Georgia; Georgia Institute of Technology; University of California System; University of California Los Angeles
摘要：We study electric vehicle (EV) fleet and charging infrastructure planning in a spatial setting. For a centrally managed fleet that serves customer requests arriving continuously at a rate lambda throughout the day, we determine the minimum number of vehicles and chargers for a target service level along with matching and charging policies. Whereas non-EV systems require extra Theta(lambda 2/3) vehicles because of pickup times, EV systems differ. Charging increases nominal capacity, enabling pi...
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作者：Haan, Peter; Sun, Chen; Sunde, Uwe; Weizsacker, Georg
作者单位：Free University of Berlin; Leibniz Association; DIW Berlin - Deutsches Institut fur Wirtschaftsforschung; Fudan University; Shanghai Institute for Mathematics & Interdisciplinary Sciences; Humboldt University of Berlin; University of Munich; Centre for Economic Policy Research - UK; Leibniz Association; Ifo Institut; IZA Institute Labor Economics
摘要：We examine the additivity of expectations over different time intervals. For example, when asked about 10-year stock price growth, survey respondents report an expected change that is not equal to, but closer to zero than, the sum of their expectations over two shorter time intervals that cover the same 10 years. Such subadditivity, which we also find in expectations for other economic variables, is irrational, as it cannot stem from aggregating short-term expectations. Model estimates show th...
