How to find max fuction with Genetic Algorithm

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Andy Rahmawan
Andy Rahmawan 2012-10-30
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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Sachin Ganjare
Sachin Ganjare 2012-10-30

更多回答（1 个）

Jan
Jan 2012-10-30
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.
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tayyaba ilyas
tayyaba ilyas 2021-12-11
hello to all,
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
Adeline War 2023-2-17
I have
f = fitnessfunction(h)
I tried placing a negative sign infront of the function but it did not work.

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