Double-horizon based heuristics for the dynamic pickup and delivery problem with time windows

Snezana Mitrovic-Minic, Ramesh Krishnamurti and Gilbert Laporte

Transportation Research Part B: Methodological, 2004, vol. 38, issue 8, 669-685

Abstract: 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.

Date: 2004
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