Find values for best and mean fitness value for each generation in Genetic Algorithm
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After running GA, using Optimization toolbox and code below, the following mean and best fitness value graph was obtained.
[x,fval,exitflag,output,population,score] = ...
ga(@revisepartialmodespring,nvars,[],[],[],[],lb,ub,[],[],options);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/716719/image.png)
How to get the value of best fitness at each generation ?.. I wanted to show a comparison of the best fitness v/s generation for different problems on the same graph. Hence I need values to best fitness at each generation.
댓글 수: 1
Debaditya Gupta
2022년 3월 31일
How to get similar type of graph in Particle Swarm Optimization in matlab?
Matlab PSO script is showing only iteration vs best fitnes value, but mean fitness value is not showing
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Alan Weiss
2021년 8월 22일
Use a Custom Output Function for Genetic Algorithm. Model it on the gaplotbestf plot function. To see that function,
edit gaplotbestf
Alan Weiss
MATLAB mathematical toolbox documentation
댓글 수: 2
Alan Weiss
2021년 8월 25일
options = optimoptions("ga","OutputFcn",@gascoreoutfun);
rng default % For reproducibility
x = ga(@ps_example,2,[],[],[],[],[],[],[],[],options)
size(gapopulationhistory)
function [state,options,optchanged] = gascoreoutfun(options,state,flag)
persistent history
optchanged = false;
switch flag
case 'init'
history = [min(state.Score),mean(state.Score)];
assignin('base','gapopulationhistory',history);
case 'iter'
history = [history;min(state.Score),mean(state.Score)];
assignin('base','gapopulationhistory',history);
case 'done'
end
end
Alan Weiss
MATLAB mathematical toolbox documentation
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