How can I optimize the following conditions using Genetic Algorithms.

I have a objective function

 y=obj(x,N,phaseNoise)

Where

• x -> decision variable of length N.
• PhaseNoise -> a random variable.

And I have a constraint function

 [C Ceq]=constraint (x,N)

Where x & N same as above.

I need to call GA using those two function.

But GA only assumes both Objective function and Constraints function should be depend on x of same length.

How can I achieve Generic Programming?

[Walter Roberson]

I suspect this is a duplicate of https://www.mathworks.com/matlabcentral/answers/379689-how-to-optimize-a-objective-function-which-depends-on-random-variable-noise-subjected-to-multiple

[Dhanu Naik]

Yes,here I tried to elaborate so I can get solution.

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/math/parameterizing-functions.html

N = ...
phaseNoise = ...
A = []; b = [];
Aeq = []; beq = [];
lb = []; ub = [];
nonlcon = @(x) constraint(x, N);
intcon = ...
options = ....
fun = @(x) obj(x, N, phaseNoise);
ga(fun, N, A, b, Aeq, beq, lb, ub, nonlcon, intcon, options)

[Dhanu Naik]

Thank you so much Walter Roberson.

I hope this will help me. Thank you.

[Matt J]

@Dhanu,

You should Accept-click Walter's answer if it resolved the problem for you.

[Dhanu Naik]

Surely...

[Dhanu Naik]

Walter,I am getting Error like this

Error in creatAnonymousFcn>@(x) fcn(x,FcnArgs{:}); (line 11)

fcn_handle=@(x) fcn(x,FcnArgs{:});

How to debug it. I sent variables as mentioned above. Can you help me.if possible explain with a example.

[Walter Roberson]

You have shown the character '›' which is char(8250), which seems unlikely to be correct.

Please show the complete error message, everything in red.

[Dhanu Naik]

I edited the error message, can you please check now .

[Walter Roberson]

I still need the complete error message, everything that shows up in red.

[Walter Roberson]

creatAnonymousFcn is not part of any of the more-than 50 toolboxes that I have installed, not as a major function and not as any internal method called by a function.

[Walter Roberson]

You have

      for n=0:N-1
        m(n)=m(n)+x(n)*(-1)^(N-n-1)*x(N-n-1)*phase(n);
    end

which starts n at 0 and then uses m(n), which is an attempt to index m at location 0, which is not permitted in MATLAB.

Answer 2

[Dhanu Naik]

But I am getting that error about Anonymous function. Can u please go through the attached codes. A3.m is main function.