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作者：Gomez, Juan Camilo David; Cochran, Amy L.; Patterson, Brian W.; Zayas-Caban, Gabriel
作者单位：University of Wisconsin System; University of Wisconsin Madison; University of Wisconsin System; University of Wisconsin Madison; University of Wisconsin System; University of Wisconsin Madison; University of Wisconsin System; University of Wisconsin Madison
摘要：Problem definition: Split flow models, in which a physician rather than a nurse performs triage, are increasingly being used in hospital emergency departments (EDs) to improve patient flow. Before deciding whether such interventions should be adopted, it is important to understand how split flows causally impact patient flow and outcomes. Methodology/results: We employ causal inference methodology to estimate average causal effects of a split flow model on time to be roomed, time to dispositio...
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作者：Zhao, Yanlu; Papier, Felix; Teo, Chung-Piaw
作者单位：Durham University; ESSEC Business School; National University of Singapore; National University of Singapore
摘要：Problem definition: Online food delivery (OFD) platforms have witnessed rapid global expansion, partly driven by shifts in consumer behavior during the COVID-19 pandemic. These platforms enable customers to order food conveniently from a diverse array of restaurants through their mobile phones. A core functionality of these platforms is the algorithmic matching of drivers to food orders, which is the focus of our study as we aim to optimize this driver -order matching process. Methodology/resu...
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作者：Wang, Ruxian; Ke, Chenxu; Zhao, Zifeng
作者单位：Johns Hopkins University; Shanghai University of Finance & Economics; University of Notre Dame
摘要：Problem definition: We investigate the effects of waiting time, mainly due to production in a make -to -batch -order (MTBO) system, on consumer choice behavior, pricing, assortment, and model estimation. In an MTBO system, the seller/manufacturer first collects orders placed within a certain period of time into a batch and then starts the production process. After the production of all orders in a batch are complete, the products are then shipped and delivered to individual consumers. Because ...
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作者：Cakici, Ozden Engin; Karaesmen, Itir
作者单位：American University
摘要：Problem definition: We study the procurement decisions of a trade agent: The agent chooses a bid (unit price to pay) to procure the goods available from seller(s). If the agent wins the bid, the supply is used to meet the buyer's demand. Methodology/results: The trade agent's single -period, single -product problem is a new type of newsvendor problem. We analyze the agent's optimal bid for a seller with yield uncertainty. We show that the bid outcome distribution needs to satisfy an easy -to -...
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作者：Wang, Shixin; Liu, Shaoxuan; Zhang, Jiawei
作者单位：Chinese University of Hong Kong; Shanghai Jiao Tong University; New York University
摘要：Problem definition: We study a robust screening problem where a seller attempts to sell a product to a buyer knowing only the moment and support information of the buyer's valuation distribution. The objective is to maximize the competitive ratio relative to an optimal hindsight policy equipped with full valuation information. Methodology/results: We formulate the robust screening problem as a linear programming problem, which can be solved efficiently if the support of the buyer's valuation i...
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作者：Ding, Jingying; Huh, Woonghee Tim; Rong, Ying
作者单位：Shanghai Jiao Tong University; University of British Columbia
摘要：Problem definition: We study stochastic periodic -review inventory systems with lost sales, where the decision maker has no access to the true demand distribution a priori and can only observe historical sales data (referred to as censored demand) and feature information about the demand. In an inventory system, excess demand is unobservable because of inventory constraints, and sales data alone cannot fully recover the true demand. Meanwhile, feature information about the demand is abundant t...
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作者：Chen, Lin; Roels, Guillaume
作者单位：INSEAD Business School
摘要：Problem definition: For many information goods, longer publication cycles (or batches of information) are more economical, but often result in less timely-and, therefore, less valuable-information. Whereas the digitalization of publication processes has reduced fixed publication costs, making shorter publication cycles more economically viable, competing firms have adapted their publication cycles differently: some of them publish more frequently, whereas others publish less frequently. In the...
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作者：Zhao, Xuejun; Haskell, William B.; Yu, Guodong
作者单位：University of North Carolina; University of North Carolina Charlotte; Purdue University System; Purdue University; Shandong University
摘要：Problem definition: We study supply chain contract design under uncertainty. In this problem, the retailer has full information about the demand distribution, whereas the supplier only has partial information drawn from historical demand realizations and contract terms. The supplier wants to optimize the contract terms, but she only has limited data on the true demand distribution. Methodology/results: We show that the classical approach for contract design is fragile in the small data regime ...
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作者：Babar, Yash; Burtch, Gordon
作者单位：University of Wisconsin System; University of Wisconsin Madison; Boston University
摘要：Problem definition: We estimate the impact of electric vehicle (EV) charging stations on volumes of consumer foot traffic received by nearby retail establishments. We also explore the conditions under which any effects manifest. Methodology/results: We use a differences-in-differences design, exploiting the staggered introduction of Tesla Supercharger stations across the United States. We combine data on Supercharger installations with mobile phone-based estimates of retailer foot traffic. We ...
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作者：Lauinger, Dirk; Vuille, Francois; Kuhn, Daniel
作者单位：Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne
摘要：Problem definition: Vehicle-to-grid increases the low utilization rate of privately owned electric vehicles by making their batteries available to electricity grids. We formulate a robust optimization problem that maximizes a vehicle owner's expected profit from selling primary frequency regulation to the grid and guarantees that market commitments are met at all times for all frequency deviation trajectories in a functional uncertainty set that encodes applicable legislation. Faithfully model...
