GA for Quadratic Assignment Problem (QAP)

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Wee Loon
Wee Loon 2011-4-18
i am trying to use matlab ga optimtool to derive a solution for QAP. in this problem, the feasible solution can be either 1 of the following cases:
1. a permutation of n. e.g. permutation of 3 - 2 1 3
2. a permutation matrix
i manage to write the fitness function, however, i just cant set the population to always be feasible solution. in other words, after a few iterations, the chromosome becomes something like (0.21 -354 1) rather than (1 3 2)
anyone have any idea to model this problem using matlab ga tool?
thanks in advanced!

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