ISSN : 1796-203X
Volume : 3    Issue : 8    Date : August 2008

Selfish Constraint Satisfaction Genetic Algorithm for Planning a Long-distance Transportation Network
Takashi Onoyama, Takuya Maekawa, Yoshitaka Sakurai, Setsuo Tsuruta, and Norihisa Komoda
Page(s): 77-85
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To build a cooperative logistics network covering multiple enterprises, a planning method that can build a
long-distance transportation network is required. Many strict constraints are imposed on this type of
problem. To solve this problem efficiently, a selfish-constraint-satisfaction genetic algorithm (GA) is
proposed. In this type GA, each gene of an individual satisfies only its constraints selfishly, disregarding
constraints of other genes even in the same individual. Further, to some extent, even individual that
violates constraints can survive over several generations and has the chance of reparation. Moreover, a
constraint pre-checking and dynamic penalty control methods are also applied to improve convergence of
GA. Our experimental result shows that the proposed method can obtain an accurate solution in a
practical response time.

Index Terms
genetic algorithm, logistics network, cooperative logistics, vehicle routing problem