MATLAB: I get this error when I try to give different upper and lower bounds in mopso ? How to correct this

MATLABmopso

In an assignment A(I) = B, the number of elements in B and I must be the same.

Error in Mutate (line 32) xnew(j)=unifrnd(lb,ub);

Error in mopso (line 115) NewSol.Position=Mutate(pop(i).Position,pm,VarMin,VarMax);

Error in main (line 17) mopso;

Best Answer

Try :

A(I) = B(I)

Related Solutions

MATLAB: Genetic Algorithm is giving “Out Side the bound” values as optimum value. How to overcome this

Did you give any options to ga? It is possible to give mutation or crossover options that can cause ga to lose feasibility.

Did you use a nonlinear constraint function? The use of nonlinear constraints can profoundly affect the course of optimization.

Basically, if you want more specific help, you have to show us your ga call and all associated options.

Alan Weiss

MATLAB mathematical toolbox documentation

MATLAB: How should I use Fmincon function when I just have linear constraints but Nonlinear objective function

Your problem is that you are using options in the place where fmincon expects to see nonlinear constraints. In other words, your call should be

[x,fval,exitflag,output]=fmincon(@optim,x0,A,B,Aeq,beq,lb,ub,[],options);

But wait, there's more. You should NOT use A and B to set bounds. And you have lb and ub that do not make sense to me, because you say that your only constraints are x(i) > 0 and x(1) < 0.00125. So get rid of A, B, nonlcon, and set

lb = [0,0];
ub = [0.00125,Inf];
[x,fval,exitflag,output]=fmincon(@optim,x0,[],[],[],[],lb,ub,[],options);