How to pass variables to the fintness function in Genetic algorithm?

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Mariem Harmassi 2012-10-8

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https://ww2.mathworks.cn/matlabcentral/answers/50226-how-to-pass-variables-to-the-fintness-function-in-genetic-algorithm

回答： M Mirrashid 2022-6-5

hello I am testing a Genetic algorithm without using the global optimization toolbox, I have defined the fitness function in a separtae matlab file and it is called by the main program with ga function ,in my fitness function i need some parametrs from the main function .Can someone tell me hwo to do this ?? I thought about declaring the variables as global variables but it doesn t work ?

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Answer 1

Alan Weiss 2012-10-10

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Take a look at the documentation on including extra parameters.

Alan Weiss

MATLAB mathematical toolbox documentation

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Mariem Harmassi 2012-10-11

Hello Alan thank u for the answer , i saw the documentation but it seems not possible to call the ga with f = @(x)parameterfun(x,a,b,c) i must call the fminunc function [x,fval] = fminunc(f,x0) :-/ :-(

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Answer 2

Alan Weiss 2012-10-11

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I'm sorry, I do not understand you. It is indeed possible to call the fitnes function with f = @(x)parameterfun(x,a,b,c). If you want more help, you will need to provide more information. Specifically:

1. Your function signature (function f = parameterfun(x,a,b))

2. Your calling syntax (x = ga(f,n,A,b))

3. All output MATLAB gives. I mean all, not an edited version.

Alan Weiss

MATLAB mathematical toolbox documentation