Writing fitness function in multi objective GA
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If I need to go for a multi objective optimisation in GA, how can I bring in the two objectives in a custom made fitness function. Can someone explain in the context of the travelling salesman problem described here : https://in.mathworks.com/help/gads/custom-data-type-optimization-using-ga.html
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Walter Roberson
on 25 May 2022
mobj = @(x) [fun1(x); fun2(x) ]
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Walter Roberson
on 27 May 2022
I am not getting a problem in my tests ?
fun1 = @(x) sin(pi*x(:,1)) + sinh(x(:,2));
fun2 = @(x) cos(pi*x(:,1)) + cosh(x(:,2));
mobj = @(x) [ fun1(x), fun2(x) ];
nvars = 2;
lb = [-pi -pi];
ub = [pi pi];
options1 = optimoptions(@gamultiobj, 'UseVectorized', false);
[Y1, fval1] = gamultiobj(mobj, nvars, [], [], [], [], lb, ub, [], options1);
options2 = optimoptions(@gamultiobj, 'UseVectorized', true);
[Y2, fval2] = gamultiobj(mobj, nvars, [], [], [], [], lb, ub, [], options1);
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