Fitness function run twice / stopping a GA
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Hello.
I have currently two problem with my GA code. My elements are defined by 4 value, and each time my fitness function is called, I display the values. What I get is :
-0.1827 0.2077 -0.0817 0.0275
-0.1827 0.2077 -0.0817 0.0275
0.8208 -0.6566 0.1232 0.0194
-0.8640 0.7799 -0.1599 0.0242
As you can see, the first element is plotted twice,meaning the fitness function is called twice with that element. But if I look at the population, it is not in it.
Here is my "run" code :
clear all
ObjectiveFunction = @fitnescalc;
nvars = 4; % Number of variables
ConstraintFunction = @constraint;
CreationFcn=@populationInit;
IP=[populationInit()]
for i=1:2
IP = [IP;populationInit()]; % Population MAtrix goes here
end
options = optimoptions('ga','InitialPopulationMatrix',IP,'OutputFcn',@gaoutfun,'PopulationSize',length(IP(:,1)));
[x,fval] = ga(ObjectiveFunction,nvars,[],[],[],[],[],[], ...
ConstraintFunction,options);
Do you see where it could come from ? Thank you
2 Comments
Geoff Hayes
on 23 May 2018
Boris - what does populationInit() do? i.e. what is the code for this function? Does it return a single element or multiple ones? It looks like you initialize IP as
IP=[populationInit()]
and then update it twice with two calls to this same function so how large is your initial population?
Please copy and paste the code for populationInit to your question.
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