Generating iterations from Genetic Alogrithim

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Afz 2012-11-10

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关闭： MATLAB Answer Bot 2021-8-20

I want to use Genetic Algorithm for optimization.

I have 5 variables (a,b,c,d,e), at the optimized solution, these variables values would be between 0 and 1.5.

The objective function which I want to minimize is x.

I don't want to construct a relation between objective function and these variables due to certain internal complex operations. Instead, I have a software where I plug the values of a,b,c,d,e and it gives be the value of X.

So instead of an equation to optimize I want to use my software to give the result value of X.

So I need to know the code to get next iteration/combination of (a,b,c,d,e) so I can plug them in my software and give the resultant X value to MATLAB so it can update and give me another set of iterations.

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Answer 1

Steve Grikschat 2012-11-12

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在 MATLAB Online 中打开

Do you have the Global Optimization Toolbox? That's the first step if you want to use GA.

See this about GA: http://www.mathworks.com/help/gads/genetic-algorithm.html

See this on how to set your problem up: http://www.mathworks.com/help/gads/index.html#optimization-problem-setup

Try writing your objective as something like this:

 function objectiveVal = myFunction(x)
 a = x(1); 
 b = x(2);
 c = x(3);
 d = x(4);
 e = x(5);
 % Call your other software
 objectiveVal = otherSoftwareCall(a,b,c,d,e);