How do you avoid an invalid search space in a genetic algorithm?

Posted by Dave on Stack Overflow See other posts from Stack Overflow or by Dave
Published on 2010-02-16T05:08:17Z Indexed on 2010/05/17 4:20 UTC
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I am developing a GA for a school project and I've noticed that upon evaluating my functions for fitness, an individual is equivalent to its inverse.

For example, the set (1, 1, -1, 1) is equivalent to (-1, -1, 1, -1). To shrink my search space and reach a solution more efficiently, how can I avoid my crossovers from searching in this second half of the search space?

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