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作者：Li, Hongmin; Webster, Scott
作者单位：Arizona State University; Arizona State University-Tempe
摘要：We examine a firm's pricing decision when managing a broad product line with the goal of optimally balancing the expected return on product investment with the revenue or profit risk associated with uncertain customer choices. We consider the multinomial logit (MNL) model and the mean-variance objective function and illustrate how the level of risk tolerance influences the firm's optimal markups. We show that the solution approach and results generalize to the nested logit (NL) choice model an...
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作者：He, Wei
作者单位：Chinese University of Hong Kong
摘要：We study a project assignment problem, where a principal needs to assign multiple projects to an agent. The agent is privately informed about the cost, which could be high or low. The agent's type evolves stochastically over time. We fully characterize the optimal mechanism via a sequence of deadlines and show that the presence of the capacity constraint reduces the principal's payoff and delays the assignment of projects. In particular, as the number of projects increases, the limit optimal c...
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作者：Cao, Junyu; Qi, Wei
作者单位：University of Texas System; University of Texas Austin; Tsinghua University
摘要：Urban open space emerges as a new territory to embrace retail innovations. Selling products in public spaces with wheeled stalls can potentially become ubiquitous in our future cities. Transition into such a stall economy paradigm is being spurred by the rapidly advancing self-driving technologies. Motivated by this transformation, this paper provides models, theory, and insights of spatial queueing systems, in which one server moves around to meet mobile customers/machines and in which the la...
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作者：Ding, Yichuan; Gupta, Diwakar; Tang, Xiaoxu
作者单位：McGill University; University of Texas System; University of Texas Austin; Wells Fargo Company
摘要：We study an appointment-based slotted-service queue with the goal of maximizing service volume. Returning customers prefer to be served by the same service agent as in their previous visit. This model captures aspects of a whole host of settings, including medical clinics, law firms, and tutoring services. We consider a simple strategy that a service provider may use to reduce balking among returning customers-designate some returning customers as high-priority customers. These customers are p...
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作者：Loehndorf, Nils; Wozabalb, David
作者单位：University of Luxembourg; Technical University of Munich
摘要：We consider the problem of a storage owner who trades in a multisettlement electricity market comprising an auction-based day-ahead market and a continuous intraday market. We show in a stylized model that a coordinated policy that reserves capacity for the intraday market is optimal and that the gap to a sequential policy increases with intraday price volatility and market liquidity. To assess the value of coordination in a realistic setting, we develop amultistage stochastic programfor day-a...
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作者：Yoo, Onesun Steve; Zhan, Dongyuan
作者单位：University of London; University College London
摘要：A critical issue in operating massive open online courses (MOOCs) is the scalability of providing feedback. Because it is not feasible for instructors to grade a large number of students' assignments, MOOCs use peer grading systems. This study investigates the efficacy of that practice when student graders are rational economic agents. We characterize grading as a process of (a) acquiring information to assess an assignment's quality and (b) reporting a score. This process entails a tradeoff b...
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作者：Huchette, Joey; Vielma, Juan Pablo
作者单位：Rice University; Massachusetts Institute of Technology (MIT)
摘要：We present novel mixed-integer programming (MIP) formulations for optimization over nonconvex piecewise linear functions. We exploit recent advances in the systematic construction of MIP formulations to derive new formulations for univariate functions using a geometric approach and for bivariate functions using a combinatorial approach. All formulations are strong, small (so-called logarithmic formulations), and have other desirable computational properties. We present extensive experiments in...
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作者：Liguori, Pedro Henrique; Mahjoub, A. Ridha; Marques, Guillaume; Sadykov, Ruslan; Uchoa, Eduardo
作者单位：Kuwait University; Universite de Bordeaux; Universidade Federal Fluminense
摘要：The capacitated location-routing problem consists in, given a set of locations and a set of customers, determining in which locations one should install depots with limited capacity, and for each depot, design a number of routes to supply customer demands. We provide a formulation that includes depot variables, edge variables, assignment variables, and an exponential number of route variables, together with some new families of valid inequalities, leading to a branch-cut-and-price algorithm. T...
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作者：Feizi, Arshya; Carson, Anita; Jaeker, Jillian Berry; Baker, William Evan
作者单位：Harvard University; Boston University; University of Vermont; University of Vermont Medical Center
摘要：We study the behavior of batching by discretionary workers in the first stage of a two-stage queuing system and explore the trade-off it causes between their productivity and second stage wait times. Specifically, we focus on the behavior of batching admissions by emergency department (ED) physicians. Using data from a large hospital, we show that the probability of batching admissions is increasing in the hour of an ED physician's shift, and that batched patients experience a 4.7% longer dela...
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作者：Liang, Yong; Sun, Peng; Tang, Runyu; Zhang, Chong
作者单位：Tsinghua University; Duke University; Xi'an Jiaotong University; Tilburg University
摘要：Motivated by the allocation of online visits to product, service, and content suppliers in the platform economy, we consider a dynamic contract design problem in which a principal constantly determines the allocation of a resource (online visits) to multiple agents. Although agents are capable of running the business, they introduce adverse events, the frequency of which depends on each agent???s effort level. We study continuous-time dynamic contracts that utilize resource allocation and mone...
