How to find max fuction with Genetic Algorithm

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Andy Rahmawan 2012-10-30

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评论： Adeline War 2023-2-22

Hi all,,

i know that doc 'ga' tell me about Find minimum of function using genetic algorithm. How to find max fuction using genetic algorithm?

thanks..

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Adeline War 2023-2-22

Got any solution?

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采纳的回答

Sachin Ganjare 2012-10-30

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https://ww2.mathworks.cn/matlabcentral/answers/52240-how-to-find-max-fuction-with-genetic-algorithm#answer_63694

Refer link below:

http://stackoverflow.com/questions/8956533/find-the-minimum-of-y-xx-using-genetic-algorithm-in-matlab

Hope it helps!!!

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Jan 2012-10-30

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While you find a lot of tools to minimize a function F, you find no functions to maximize F. Fortunately you can minimize G = -F, such that you do not need to program your own maximization tool.

I am trying to solve an optimization problem to find maximum value of my fitness function that calculate rate. My fitness function for each individual return the value for 1/rate , as GA solver minimizes so I used 1/rate to maximize rate. once the GA solver executes and return the minimum value, then I used to take another inverse to get the actual maximized value for the rate. Is the procedure is correct? As also you people suggested to include a (-) negative sign in front of the function in the objective function code. i didnot understand the actuall way to do it. Shall i have to take negative of fun (-fun) when calling it in ga solver below?

x = ga(fun,nvars,A,b,Aeq,beq,lb,ub,nonlcon,intcon,options)

suggest me how to perform maximizing optimization problem with GA solver.

Thanks in advance

Adeline War 2023-2-17