期刊
TRANSPORTATION RESEARCH PART B-METHODOLOGICAL
卷 38, 期 8, 页码 669-685出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.trb.2003.09.001
关键词
dynamic pickup and delivery problem with time windows; on-line heuristic; rolling time horizon; short-term and long-term time horizons
The dynamic Pickup and Delivery Problem with Time Windows (PDPTW) is faced by courier companies serving same-day pickup and delivery requests for the transport of letters and small parcels. This article focuses on the dynamic PDPTW for which future requests are not stochastically modelled or predicted. The standard solution methodology for the dynamic PDPTW is the use of a rolling time horizon as proposed by Psaraftis. When assigning a new request to a vehicle it may be preferable to consider the impact of a decision both on a short-term and on a long-term horizon. In particular, better managing slack time in the distant future may help reduce routing cost. This paper describes double-horizon based heuristics for the dynamic PDPTW. Computational results show the advantage of using a double-horizon in conjunction with insertion and improvement heuristics. (C) 2003 Elsevier Ltd. All rights reserved.
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