作者：Emadikhiav, Mohsen; Bergman, David; Day, Robert
作者单位：University of Connecticut
摘要：We study the planning and scheduling of order shipments among laboratories of an instrument-calibration company. To address a generic version of the company's combined routing and scheduling problem, we introduce a model variant with simultaneous pickups and deliveries in which consistency of site visits is also desired. We provide alternative formulations of the problem and propose branch-and-check and branch-and-price implementations, with an analysis of the instance characteristics for whic...
作者：Avci, Harun; Gokbayrak, Kagan; Nadar, Emre
作者单位：Ihsan Dogramaci Bilkent University
摘要：We consider a discrete-time infinite-horizon inventory system with non-stationary demand, full backlogging, and deterministic replenishment lead time. Demand arrives according to a probability distribution conditional on the state of the world that undergoes Markovian transitions over time. But the actual state of the world can only be imperfectly estimated based on past demand data. We model the inventory replenishment problem for this system as a Markov decision process (MDP) with an uncount...
