Bidirectional labeling in column-generation algorithms for pickup-and-delivery problems
نویسندگان
چکیده
منابع مشابه
Dynamic pickup and delivery problems
In the last decade, there has been an increasing body of research in dynamic vehicle routing problems. This article surveys the subclass of those problems called dynamic pickup and delivery problems, in which objects or people have to be collected and delivered in real time. It discusses some general issues as well as solution strategies.
متن کاملUsing Column Generation for the Pickup and Delivery Problem with Disturbances
This thesis shows how both the PDPTW (Pickup and Delivery Problem with Time Windows) and a variant where travel times are non-deterministic (Pickup and Delivery Problem with Disturbances), can be solved by an approximation algorithm that uses Linear Programming with column generation. In the pricing problem – which is solved by Simulated Annealing – an Evolutionary Algorithm helps to execute be...
متن کاملSTOCHASTIC VEHICLE ROUTING PROBLEMS WITH SIMULTANEOUS PICKUP AND DELIVERY SERVICES
The problem of designing a set of routes with minimum cost to serve a collection of customers with a fleet of vehicles is a fundamental challenge when the number of customers to be dropped or picked up is not known during the planning horizon. The purpose of this paper is to develop a vehicle routing Problem (VRP) model that addresses stochastic simultaneous pickup and delivery in the urban pub...
متن کاملModels and branch-and-cut algorithms for pickup and delivery problems with time windows
In the pickup and delivery problem with time windows (PDPTW), capacitated vehicles must be routed to satisfy a set of transportation requests between given origins and destinations. In addition to capacity and time window constraints, vehicle routes must also satisfy pairing and precedence constraints on pickups and deliveries. This paper introduces two new formulations for the PDPTW and the cl...
متن کاملInvestigating heuristic and meta-heuristic algorithms for solving pickup and delivery problems
The development of effective decision support tools that can be adopted in the transportation industry is vital in the world we live in today, since it can lead to substantial cost reduction and efficient resource consumption. Solving the Vehicle Routing Problem (VRP) and its related variants is at the heart of scientific research for optimizing logistic planning. One important variant of the V...
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ژورنال
عنوان ژورنال: European Journal of Operational Research
سال: 2018
ISSN: 0377-2217
DOI: 10.1016/j.ejor.2017.09.035