An Investigation on the Effect of Migration Strategy on Parallel GA-Based Shortest Path Routing Algorithm

DOI: 10.4236/cn.2012.42013   PDF   HTML     4,039 Downloads   6,906 Views   Citations

Abstract

Genetic algorithm (GA) is one of the alternative approaches for solving the shortest path routing problem. In previous work, we have developed a coarse-grained parallel GA-based shortest path routing algorithm. With parallel GA, there is a GA operator called migration, where a chromosome is taken from one sub-population to replace a chromosome in another sub-population. Which chromosome to be taken and replaced is subjected to the migration strategy used. There are four different migration strategies that can be employed: best replace worst, best replace random, random replace worst, and random replace random. In this paper, we are going to evaluate the effect of different migration strategies on the parallel GA-based routing algorithm that has been developed in the previous work. Theoretically, the migration strategy best replace worst should perform better than the other strategies. However, result from simulation shows that even though the migration strategy best replace worst performs better most of the time, there are situations when one of the other strategies can perform just as well, or sometimes better.

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S. Yussof and R. Azlin Razali, "An Investigation on the Effect of Migration Strategy on Parallel GA-Based Shortest Path Routing Algorithm," Communications and Network, Vol. 4 No. 2, 2012, pp. 93-100. doi: 10.4236/cn.2012.42013.

Conflicts of Interest

The authors declare no conflicts of interest.

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