Genetic Algorithm with Array as variable

So say I have some array at the beginning of a very long code. And at the end the program outputs a single value. How do I get the genetic algorithm tool to change the values of each element in the array to minimize the output value? This may be something simple but I cannot find a method or example on how to do this. Thanks for your time!

Answer 1

[Alan Weiss]

All you have to do is change your array to a row vector, something like this:

 input = x(:)';

Here x represents your array of variables (known as decision variables) that the optimizer changes to minimize the output value (known as the objective function or, for ga, the fitness function). Then input is the set of variables that ga evaluates for finding a minimum.

See this example of constrained minimization for help.

Good luck,

Alan Weiss

MATLAB mathematical toolbox documentation

[Set Eng]

I have same problem , and I do this step for my variables :

input = x(:)';

but Genetic algorthim code not work with it , how can I fix it ?

[Alan Weiss]

I have no idea what your inputs and function call are, so how can I comment? I suggest that you ask a new question (I mean start a new Answers topic) and give some detail. Include your function call ([x,fval] = ga(whatever)) and your options.

Alan Weiss

MATLAB mathematical toolbox documentation

[Set Eng]

I write new quastion in same Title , and add all details , can you help me ,please

[Walter Roberson]

Your Question does not appear to be posted yet?

[Set Eng]

https://www.mathworks.com/matlabcentral/answers/606051-genetic-algorithm-code-with-array-as-variable

this is my quastion