2023

最新文章

• A Branch-and-Repair Method for Three-Dimensional Bin Selection and Packing in E-Commerce AI翻译
  作者：Fontaine, Pirmin; Minner, Stefan
  作者单位：Technical University of Munich; Technical University of Munich
  摘要：The number of shipped parcels is continuously growing and e-commerce retailers and logistics service providers are seeking to improve logistics, particularly lastmile delivery. Since unused transportation space is a major problem in parcel distribution, one option is to improve the selection of the right parcel size for an order and the optimal packing pattern, which is known as the three-dimensional bin packing problem (3D-BPP). Further, the available portfolio of parcel types significantly i...
• Policy Analytics in Public School Operations AI翻译
  作者：Bertsimas, Dimitris; Delarue, Arthur
  作者单位：Massachusetts Institute of Technology (MIT); University System of Georgia; Georgia Institute of Technology
  摘要：Getting students to the right school at the right time can pose a challenge for school districts in the United States, which must balance educational objectives with operational ones, often on a shoestring budget. Examples of such operational challenges include deciding which students should attend, how they should travel to school, and what time classes should start. Froman optimizer's perspective, these decision problems are difficult to solve in isolation, and present a formidable challenge...
• Work More Tomorrow: Resolving Present Bias in Project Management AI翻译
  作者：Shi, Yun; Hall, Nicholas G.; Cui, Xiangyu
  作者单位：East China Normal University; East China Normal University; University System of Ohio; Ohio State University; Shanghai University of Finance & Economics; Shanghai Institute of International Finance & Economics
  摘要：Project management is responsible for almost 30% of the world's economic activity, with an annual value of $27 trillion. Traditionally, the frequent late delivery of projects is attributed to Parkinson's Law, which incorporates laziness, procrastination, and self-protection against reduced deadlines in the future. Incentive schemes are widely designed and implemented to eliminate Parkinson's Law. Yet many projects are nonetheless delivered late. To explain this, we show computationally that a ...
• An Approximate Analysis of Dynamic Pricing, Outsourcing, and Scheduling Policies for a Multiclass Make-to-Stock Queue in the Heavy Traffic Regime AI翻译
  作者：Ata, Baris; Barjesteh, Nasser
  作者单位：University of Chicago; University of Toronto
  摘要：We consider a make-to-stock manufacturing system selling multiple products to price-sensitive customers. The system manager seeks to maximize the long-run average profit by making dynamic pricing, outsourcing, and scheduling decisions. First, she adjusts prices dynamically depending on the systemstate. Second, when the backlog ofwork is judged to be excessive, she may outsource new orders, thereby incurring outsourcing costs. Third, she decides dynamically which product to prioritize in the ma...
• Achieving High Individual Service Levels Without Safety Stock? Optimal Rationing Policy of Pooled Resources AI翻译
  作者：Jiang, Jiashuo; Wang, Shixin; Zhang, Jiawei
  作者单位：Hong Kong University of Science & Technology; Chinese University of Hong Kong; New York University
  摘要：Resource pooling is a fundamental concept that has many applications in operations management for reducing and hedging uncertainty. An important problem in resource pooling is to decide (1) the capacity level of pooled resources in anticipation of randomdemand ofmultiple customers and (2) how the capacity should be allocated to fulfill customer demands after demand realization. In this paper, we present a general framework to study this two-stage problem when customers require individual and p...
• The Inventory Routing Problem Under Uncertainty AI翻译
  作者：Cui, Zheng; Long, Daniel Zhuoyu; Qi, Jin; Zhang, Lianmin
  作者单位：Zhejiang University; Chinese University of Hong Kong; Hong Kong University of Science & Technology; Nanjing University; Shenzhen Research Institute of Big Data
  摘要：We study an uncertain inventory routing problem with a finite horizon. The supplier acts as a central planner who determines the replenishment quantities and also, the delivery times and routes to all retailers. We allow ambiguity in the probability distribution of each retailer's uncertain demand. Adopting a service-level viewpoint, we minimize the risk of uncertain inventory levels violating a prespecified acceptable range. We quantify that risk using a novel decision criterion, the service ...
• Tight Guarantees for Static Threshold Policies in the Prophet Secretary Problem AI翻译
  作者：Arnosti, Nick; Ma, Will
  作者单位：University of Minnesota System; University of Minnesota Twin Cities; Columbia University
  摘要：In the prophet secretary problem, n values are drawn independently from known distributions and presented in a uniformly random order. A decision maker must accept or reject each value when it is presented and may accept at most k values in total. The objective is to maximize the expected sum of accepted values. We analyze the performance of static threshold policies, which accept the first k values exceeding a fixed threshold (or all such values, if fewer than k exist). We show that an approp...
• Inventory Sharing for Perishable Products: Application to Platelet Inventory Management in Hospital Blood Banks AI翻译
  作者：Zhang, Can; Ayer, Turgay; White, Chelsea C.; Bodeker, Joy N.; Roback, John D.
  作者单位：Duke University; University System of Georgia; Georgia Institute of Technology; Emory University; Emory University
  摘要：Platelets are critical blood products. The management of platelet inventory is particularly challenging because of its perishable nature with a short shelf life. Motivated by a platelet inventory management problem at a two-location hospital system, we study how the wastage of platelets and, more broadly, perishable products can be reduced through inventory sharing. In particular, we consider a system with two locations and a single product (e.g., a two-hospital system sharing blood products, ...
• Disruption and Rerouting in Supply Chain Networks AI翻译
  作者：Birge, John R.; Capponi, Agostino; Chen, Peng-Chu
  作者单位：University of Chicago; Columbia University; University of Hong Kong
  摘要：We study systemic risk in a supply chain network where firms are connected through purchase orders. Firms can be hit by cost or demand shocks, which can cause defaults. These shocks propagate through the supply chain network via input-output linkages between buyers and suppliers. Firms endogenously take contingency plans to mitigate the impact generated from disruptions. We show that, as long as firms have large initial equity buffers, network fragility is low if both buyer diversification and...
• Market Making and Incentives Design in the Presence of a Dark Pool: A Stackelberg Actor-Critic Approach AI翻译
  作者：Baldacci, Bastien; Manziuk, Iuliia; Mastrolia, Thibaut; Rosenbaum, Mathieu
  作者单位：Institut Polytechnique de Paris; Ecole Polytechnique; University of California System; University of California Berkeley
  摘要：We consider the issue of a market maker acting at the same time in the lit and dark pools of an exchange. The exchange wishes to establish a suitable make-take fee policy to attract transactions on its venues. We first solve the stochastic control problem of the market maker without the intervention of the exchange. Then, we derive the equations defining the optimal contract to be set between the market maker and the exchange. This contract depends on the trading flows generated by the market ...