2期

最新文章

• A Monge Sequence-Based Approach to Characterize the Competitive Newsvendor Problem AI翻译
  作者：Bansal, Saurabh; Nagarajan, Mahesh
  作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of British Columbia
  摘要：We revisit the stochastic inventory game in which n players compete by setting their individual inventory levels in a market with stockout-based demand substitution. Because of specific tractability issues, the prior literature has largely focused on versions of this competitive newsvendor problem with assumptions on the number of players and their substitution behavior. In this note, we develop an approach to solve instances of this problem with any number of players and multistage spillovers...
• Menu Costs and the Bullwhip Effect: Supply Chain Implications of Dynamic Pricing AI翻译
  作者：Bray, Robert L.; Stamatopoulos, Ioannis
  作者单位：Northwestern University; University of Texas System; University of Texas Austin
  摘要：We study the supply chain implications of dynamic pricing. Specifically, we estimate how reducing menu costs-the operational burden of adjusting prices-would affect supply chain volatility. Fitting a structural econometric model to data from a large Chinese supermarket chain, we estimate that removing menu costs would (i) reduce the mean shipment coefficient of variation by 7.2 percentage points (pp), (ii) reduce the mean sales coefficient of variation by 4.3 pp, and (iii) reduce the mean bull...
• Separation of Perishable Inventories in Offline Retailing Through Transshipment AI翻译
  作者：Li, Qing; Yu, Peiwen; Du, Lilun
  作者单位：Hong Kong University of Science & Technology; Chongqing University
  摘要：Transshipment in retailing is a practice where one outlet ships its excess inventory to another outlet with inventory shortages. By balancing inventories, transshipment can reduce waste and increase fill rate at the same time. In this paper, we explore the idea of transshipping perishable goods with a fixed finite lifetime in offline grocery retailing. In the offline retailing of perishable goods, customers typically choose the newest items first, which can lead to substantial waste. We show t...
• Stochastic Knapsack Revisited: The Service Level Perspective AI翻译
  作者：Lyu, Guodong; Chou, Mabel C.; Teo, Chung-Piaw; Zheng, Zhichao; Zhong, Yuanguang
  作者单位：National University of Singapore; National University of Singapore; Singapore Management University; South China University of Technology
  摘要：A key challenge in the resource allocation problem is to find near-optimal policies to serve different customers with random demands/revenues, using a fixed pool of capacity (properly configured). In this paper, we study the properties of three classes of allocation policies-responsive (with perfect hindsight), adaptive (with information updates), and anticipative (with forecast information) policies. These policies differ in how the information on actual demand and revenue of each customer is...
• Bootstrap-based Budget Allocation for Nested Simulation AI翻译
  作者：Zhang, Kun; Liu, Guangwu; Wang, Shiyu
  作者单位：Renmin University of China; City University of Hong Kong
  摘要：Simulation budget allocation is at the heart of a nested (also referred to as two level) simulation approach to estimating functionals of a conditional expectation. In this paper, we propose a sample-driven budget allocation rule under a unified nested simulation framework that allows for different forms of functionals. The proposed method employs bootstrap sampling to guide an effective choice of outer-and inner-level sample sizes. Furthermore, we establish a central limit theorem for nested ...
• Robust Learning of Consumer Preferences AI翻译
  作者：Feng, Yifan; Caldentey, Rene; Ryan, Christopher Thomas
  作者单位：National University of Singapore; University of Chicago; University of British Columbia
  摘要：This paper studies a class of ranking and selection problems faced by a company that wants to identify the most preferred product out of a finite set of alternatives when consumer preferences are a priori unknown. The only information available is that consumer preferences satisfy two key properties: (i) they are consistent with some unknown true ranking of the alternatives, and (ii) they are strict, namely, no two products are equally preferred. To learn the unknown ranking, the company is ab...
• Personalized Retail Promotions Through a Directed Acyclic Graph-Based Representation of Customer Preferences AI翻译
  作者：Jagabathula, Srikanth; Mitrofanov, Dmitry; Vulcano, Gustavo
  作者单位：New York University; Boston College; Universidad Torcuato Di Tella; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
  摘要：We propose a back-to-back procedure for running personalized promotions in retail operations contexts, from the construction of a nonparametric choice model where customer preferences are represented by directed acyclic graphs (DAGs) to the design of such promotions. The source data include a history of purchases tagged by customer ID jointly with product availability and promotion data for a category of products. In each customer DAG, nodes represent products and directed edges represent the ...
• Cross-Sectional Variation of Intraday Liquidity, Cross-Impact and Their Effect on Portfolio Execution AI翻译
  作者：Min, Seungki; Maglaras, Costis; Moallemi, Ciamac C.
  作者单位：Korea Advanced Institute of Science & Technology (KAIST); Columbia University
  摘要：An analysis of intraday volumes for the S&P 500 constituent stocks illustrates that (i) volume surprises (i.e., deviations from forecasted trading volumes) are correlated across stocks and that (ii) this correlation increases during the last few hours of the trading session. These observations can be attributed partly to the prevalence of portfolio trading activity that is implicit in the growth of passive (systematic) investment strategies and partly to the increased trading intensity of such...
• Single Allocation Hub Location with Heterogeneous Economies of Scale AI翻译
  作者：Rostami, Borzou; Chitsaz, Masoud; Arslan, Okan; Laporte, Gilbert; Lodi, Andrea
  作者单位：Wilfrid Laurier University; Universite de Montreal; Polytechnique Montreal; Universite de Montreal; Universite de Montreal; HEC Montreal; University of Bath; Cornell University
  摘要：We study the single allocation hub location problem with heterogeneous economies of scale (SAHLP-h). The SAHLP-h is a generalization of the classical single allocation hub location problem (SAHLP), in which the hub-hub connection costs are piecewise linear functions of the amounts of flow. We model the problem as an integer nonlinear program, which we then reformulate as a mixed integer linear program (MILP) and as a mixed integer quadratically constrained program (MIQCP). We exploit the speci...
• The Gap Function: Evaluating Integer Programming Models over Multiple Right-Hand Sides AI翻译
  作者：Ajayi, Temitayo; Thomas, Christopher; Schaefer, Andrew J.
  作者单位：Rice University
  摘要：For an integer programming model with fixed data, the linear programming relaxation gap is considered one of the most important measures of model quality. There is no consensus, however, on appropriate measures of model quality that account for data variation. In particular, when the right-hand side is not known exactly, one must assess a model based on its behavior over many right-hand sides. Gap functions are the linear programming relaxation gaps parametrized by the right-hand side. Despite...