2期

最新文章

• Optimal Allocation of Resources in Airport Security: Profiling vs. Screening AI翻译
  作者：Bagchi, Aniruddha; Paul, Jomon Aliyas
  作者单位：University System of Georgia; Kennesaw State University
  摘要：This model examines the role of intelligence gathering and screening in providing airport security. We analyze this problem using a game between the government and a terrorist. By investing in intelligence gathering, the government can improve the precision of its information. In contrast, screening can be used to search a passenger and thereby deter terrorist attacks. We determine the optimal allocation of resources between these two strategies wherein we model the role of intelligence using ...
• Assortment Optimization Under Variants of the Nested Logit Model AI翻译
  作者：Davis, James M.; Gallego, Guillermo; Topaloglu, Huseyin
  作者单位：Cornell University; Columbia University
  摘要：We study a class of assortment optimization problems where customers choose among the offered products according to the nested logit model. There is a fixed revenue associated with each product. The objective is to find an assortment of products to offer so as to maximize the expected revenue per customer. We show that the problem is polynomially solvable when the nest dissimilarity parameters of the choice model are less than one and the customers always make a purchase within the selected ne...
• Delay-Robust Event Scheduling AI翻译
  作者：Caprara, Alberto; Galli, Laura; Stiller, Sebastian; Toth, Paolo
  作者单位：University of Bologna; University of Pisa; Technical University of Berlin
  摘要：Robust optimisation is a well-established concept to deal with uncertainty. In particular, recovery-robust models are suitable for real-world contexts, where a certain amount of recovery-although limited-is often available. In this paper we describe a general framework to optimise event-based problems against delay propagation. We also present a real-world application to train platforming in the Italian railways in order to show the practical effectiveness of our framework.
• Coordinating Inventory Control and Pricing Strategies for Perishable Products AI翻译
  作者：Chen, Xin; Pang, Zhan; Pan, Limeng
  作者单位：Nanjing University; University of Illinois System; University of Illinois Urbana-Champaign; Lancaster University
  摘要：We analyze a joint pricing and inventory control problem for a perishable product with a fixed lifetime over a finite horizon. In each period, demand depends on the price of the current period plus an additive random term. Inventories can be intentionally disposed of, and those that reach their lifetime have to be disposed of. The objective is to find a joint pricing, ordering, and disposal policy to maximize the total expected discounted profit over the planning horizon taking into account li...
• Sequential Resource Allocation for Nonprofit Operations AI翻译
  作者：Lien, Robert W.; Iravani, Seyed M. R.; Smilowitz, Karen R.
  作者单位：Northwestern University
  摘要：This paper studies a sequential resource allocation problem motivated by distribution operations of a nonprofit organization. The alternate objectives that arise in nonprofit (as opposed to commercial) operations lead to new variations on traditional problems in operations research and inventory management. Specifically, we consider the problem of distributing a scarce resource to meet customers' demands that are observed sequentially. An allocation policy that seeks to maximize profit may lea...
• On Markov Equilibria in Dynamic Inventory Competition AI翻译
  作者：Olsen, Tava Lennon; Parker, Rodney P.
  作者单位：University of Auckland; University of Chicago
  摘要：We provide a review of the types of equilibria typically found in operations management inventory papers and a discussion on when the commonly used stationary infinite-horizon (open-loop) equilibrium may be sufficient for study. We focus particularly on order-up-to and basestock equilibria in the context of inventory duopolies. We give conditions under which the stationary infinite-horizon equilibrium is also a Markov perfect (closed-loop) equilibrium. These conditions are then applied to thre...
• One-Machine Sequencing to Minimize Total Tardiness: A Fourth Theorem for Emmons AI翻译
  作者：Kanet, John J.
  作者单位：University System of Ohio; University of Dayton
  摘要：In 1969 H. Emmons provided three theorems (Emmons 1-3) for determining precedence relations between pairs of jobs for the single-machine tardiness problem. We show here a fourth straightforward theorem that uses the information when the jobs in the pair are both known to precede a third job in an optimum sequence. The new theorem augments the three Emmons theorems and is shown to be a generalization of a theorem by Elmaghraby.
• On the Performance of Sparse Process Structures in Partial Postponement Production Systems AI翻译
  作者：Chou, Mabel C.; Chua, Geoffrey A.; Zheng, Huan
  作者单位：National University of Singapore; Nanyang Technological University; Shanghai Jiao Tong University
  摘要：Production postponement, the strategy to hold reserved production capacity that can be deployed based on actual demand signals, is often used to mitigate supply-demand mismatch risk. The effectiveness of this strategy depends crucially on the ease, or flexibility, in deploying the reserved capacity to meet product demands. Existing literature assumes that the reserved capacity is fully flexible, i.e., capable of being deployed to meet the demand of any item in a multiproduct system. Little is ...
• A Mean-Risk Model for the Traffic Assignment Problem with Stochastic Travel Times AI翻译
  作者：Nikolova, E.; Stier-Moses, N. E.
  作者单位：University of Texas System; University of Texas Austin; Texas A&M University System; Texas A&M University College Station; Columbia University; Universidad Torcuato Di Tella; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
  摘要：Heavy and uncertain traffic conditions exacerbate the commuting experience of millions of people across the globe. When planning important trips, commuters typically add an extra buffer to the expected trip duration to ensure on-time arrival. Motivated by this, we propose a new traffic assignment model that takes into account the stochastic nature of travel times. Our model extends the traditional model of Wardrop competition when uncertainty is present in the network. The focus is on strategi...
• Scheduled Service Network Design for Freight Rail Transportation AI翻译
  作者：Zhu, Endong; Crainic, Teodor Gabriel; Gendreau, Michel
  作者单位：University of Quebec; University of Quebec Montreal; Universite de Montreal; University of Quebec; University of Quebec Montreal; Universite de Montreal; Polytechnique Montreal; Universite de Montreal; Polytechnique Montreal
  摘要：This paper addresses the scheduled service network design problem for freight rail transportation. The proposed model integrates service selection and scheduling, car classification and blocking, train makeup, and routing of time-dependent customer shipments based on a cyclic three-layer space-time network representation of the associated operations and decisions and their relations and time dimensions. This paper also proposes a matheuristic solution methodology integrating slope scaling, a d...