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作者：DeCroix, Gregory; Long, Xiaoyang; Tong, Jordan
作者单位：University of Wisconsin System; University of Wisconsin Madison
摘要：We formalize an understudied mechanism through which quality variability hurts firm revenues, analyze when and why this mechanism is important, and generate new insight into how dynamic personalized pricing strategies can mitigate the negative effects of quality variability. To do so, we model a firm that sells a service repeatedly with variable but stationary quality. Customers update their quality beliefs based on their experiences (exponential smoothing), and their purchase probability in e...
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作者：Russ, Matthias; Gust, Gunther; Neumann, Dirk
作者单位：University of Freiburg
摘要：The constrained reliable shortest path problem in stochastic time-dependent networks (CRSP-STD) extends the reliable, the time-dependent, and the constrained shortest path problem. In the CRSP-STD, shortest paths need to ensure on-time arrival with a given probability and additionally satisfy constraints on time-dependent weights. Examples of such time-dependent weights in transport networks include time-varying congestion charges or dynamic fees for shared vehicles. If weights decrease over t...
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作者：Dyson, Robert G.; O'Brien, Frances A.; Shah, Devan B.
作者单位：University of Warwick
摘要：This paper explores the work of some 43 founders of operations research. In particular, it considers the links between soft operations research (OR) and these founders. Several of the founders were direct influencers of the soft OR proponents, whereas others related to the context, process, and content of soft OR. Coupled with the deductive and inductive reasoning approaches of soft OR, it is argued that soft OR is a legitimate branch of OR. The paper also focuses on the embeddedness of the fo...
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作者：Pessoa, Artur Alves; Poss, Michael; Sadykov, Ruslan; Vanderbeck, Francois
作者单位：Universidade Federal Fluminense; Centre National de la Recherche Scientifique (CNRS); Universite de Montpellier; Centre National de la Recherche Scientifique (CNRS); Inria
摘要：Y We examine the robust counterpart of the classical capacitated vehicle routing problem (CVRP). We consider two types of uncertainty sets for the customer demands: the classical budget polytope and a partitioned budget polytope. We show that using the set-partitioning formulation it is possible to reformulate our problem as a deterministic heterogeneous vehicle routing problem. Thus, many state-of-the-art techniques for exactly solving deterministic VRPs can be applied to the robust counterpa...
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作者：Zenios, Stavros A.; Consiglio, Andrea; Athanasopoulou, Marialena; Moshammer, Edmund; Gavilan, Angel; Erce, Aitor
作者单位：University of Cyprus; University of Pennsylvania; University of Palermo; Banco de Espana; Universidad Publica de Navarra
摘要：We model sovereign debt sustainability with optimal financing decisions under macroeconomic, financial, and fiscal uncertainty, with endogenous risk and term premia. Using a coherent risk measure we trade off debt stock and flow risks subject to sustainability constraints. We optimize static and dynamic financing strategies and demonstrate economically significant savings from optimal financing compared with simple rules and consols, and find that optimizing the trade-offs can be critical for ...
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作者：Merdan, Selin; Barnett, Christine L.; Denton, Brian T.; Montie, James E.; Miller, David C.
作者单位：University of Michigan System; University of Michigan; University of Michigan System; University of Michigan
摘要：We used data-analytics approaches to develop, calibrate, and validate predictive models, to help urologists in a large statewide collaborative make prostate cancer staging decisions on the basis of individual patient risk factors. The models were validated using statistical methods based on bootstrapping and evaluation on out-of-sample data. These models were used to design guidelines that optimally weigh the benefits and harms of radiological imaging for the detection of metastatic prostate c...
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作者：Saban, Daniela; Weintraub, Gabriel Y.
作者单位：Stanford University
摘要：We consider the problem faced by a procurement agency that runs a mechanism for constructing an assortment of differentiated products with posted prices, from which heterogeneous consumers buy their most preferred alternative. Procurement mechanisms used by large organizations, including framework agreements (FAs), which are widely used in the public sector, often take this form. When choosing the assortment, the procurement agency must optimize the tradeoff between offering a richer menu of p...
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作者：Vera, Alberto; Banerjee, Siddhartha; Gurvich, Itai
作者单位：Cornell University; Northwestern University
摘要：We develop a framework for designing simple and efficient policies for a family of online allocation and pricing problems that includes online packing, budget-constrained probing, dynamic pricing, and online contextual bandits with knapsacks. In each case, we evaluate the performance of our policies in terms of their regret (i.e., additive gap) relative to an offline controller that is endowed with more information than the online controller. Our framework is based on Bellman inequalities, whi...
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作者：Alptekinoglu, Aydin; Semple, John H.
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Southern Methodist University
摘要：We investigate analytical and empirical properties of the Heteroscedastic Exponomial Choice (HEC) model to lay the groundwork for its use in theoretical and empirical studies that build demand models on a discrete choice foundation. The HEC model generalizes the Exponomial Choice (EC) model by including choice-specific variances for the random components of utility (the error terms). We show that the HEC model inherits some of the properties found in the EC model: closed-form choice probabilit...
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作者：Balseiro, Santiago; Kim, Anthony; Mahdian, Mohammad; Mirrokni, Vahab
作者单位：Columbia University; Amazon.com; Alphabet Inc.; Google Incorporated
摘要：In online advertising, advertisers purchase ad placements by participating in a long sequence of repeated auctions. One of the most important features that advertising platforms often provide and advertisers often use is budget management, which allows advertisers to control their cumulative expenditures. Advertisers typically declare the maximum daily amount they are willing to pay, and the platform adjusts allocations and payments to guarantee that cumulative expenditures do not exceed budge...
