How to constrain the Genetic Algorithm so that the variables are in the form of an n by m matrix

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Craig
Craig 2014-5-15
评论： Craig 2014-5-15
My cost function will only accept a 25 * 51 matrix as an input (1275 variables) and then it returns a single number. How will I set up the GA to minimise this cost function?
Thanks!

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Matt J
Matt J 2014-5-15
编辑：Matt J 2014-5-15
Insert the following as the first line in your cost function
x=reshape(x,25,51);
Now it doesn't matter what shape the original input x, is.
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Matt J
Matt J 2014-5-15
编辑：Matt J 2014-5-15
So the problem is that the current cost function yourfunc(x) doesn't know the matrix dimensions in advance? You will have to wrap it in another function that does know the architecture and which reshapes the input accordingly, e.g.,
fitnessFunc=@(x) yourfunc(reshape(x,[M,N]))
Surely, you have something outside of yourfunc() that does know the architecture. How else does the matrix get into its intended shape in the first place?

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