MATLAB: Genetic algorithm plots penalty instead of Fitness

genetic algorithmGlobal Optimization Toolbox

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?

Best Answer

Perhaps you have some integer constraints.

If not, please show us your options and ga call.

Alan Weiss

MATLAB mathematical toolbox documentation

Related Solutions

MATLAB: Does it show on genetic algorithm plotting ‘gaplotgenealogy not supported for this algorithm’

If you enter

help gaplotgenealogy

you see at the end of the help this statement:

    NOTE: This plot is only available after the GA has stopped and can not
    be used for nonlinear constrained problems.

So, do you have any nonlinear constraints?

Alan Weiss

MATLAB mathematical toolbox documentation

MATLAB: What are the various native fitness functions that can be called in GA Optimization Toolbox

You can use any objective function from Optimization Toolbox or Global Optimization Toolbox. In particular,

expensive_objfun
objfun
onehump
ackleyfcn
cantileverVolume
dejong1fcn
dejong2fcn
dejong5fcn
lincontest2
lincontest6
lincontest7
ps_example
simple_fitness
simple_objective

Take a look at the featured examples for these and more.

Alan Weiss

MATLAB mathematical toolbox documentation

Best Answer

Related Solutions

MATLAB: Does it show on genetic algorithm plotting ‘gaplotgenealogy not supported for this algorithm’

MATLAB: What are the various native fitness functions that can be called in GA Optimization Toolbox

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