Genetic algorithm plots penalty instead of Fitness

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alaa zarif
alaa zarif 2019-10-7
编辑： Alan Weiss 2019-10-10
Im using the GA toolbox to solve an unconstrained problem.. however the genetic algorithm is producing the graph of penalty vs generations instead of fitness vs generations.. why do i have this?

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Alan Weiss
Alan Weiss 2019-10-7
Perhaps you have some integer constraints.
If not, please show us your options and ga call.
Alan Weiss
MATLAB mathematical toolbox documentation
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alaa zarif
alaa zarif 2019-10-10
I do have IntCon for my variables, I didnt know they will cause it to plot penalty vs generations!
Can you explain to me how does the matlab penalty vs generation work as i dont understand the figure attached.. the sudden drop in penalty then increases however it hasnt taken the lowest value on graph to be the best ?
Alan Weiss
Alan Weiss 2019-10-10
编辑：Alan Weiss 2019-10-10
I would guess that you set some options improperly, like EliteCount = 0 or some such thing. Or despite your statement to the contrary, you have a nonlinear constraint. For further help, please report all of your options and give your ga call.
Alan Weiss
MATLAB mathematical toolbox documentation

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