Optimizing a function with many many arguments
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I have a function which has many outputs. I would like to find the minimum of one of the outputs by optimizing the function. Since I have many outputs I suspect that the optimization will not be successful. So my function is of the form:
function [A, B, C]=myfun(a,b,c)
and I would like to find the minimum only of the output A. Then since I the optimized values for a,b,c I would like to call again the function to find the values also of B and C.
So I would like to do:
[Amin, Bopt, Copt]=myfun(aopt, bopt, copt)
Do you know how can implement it?
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Answers (3)
Matt J
on 25 Jan 2013
Edited: Matt J
on 25 Jan 2013
Any of the solvers can do this, e.g.
fun=@(x) myfun(x(1), x(2), x(3));
initialpoint=[aguess,bguess, cguess];
x = fminsearch(fun , initialpoint);
[Amin, Bopt, Copt]=fun(x);
3 Comments
Matt J
on 25 Jan 2013
Inside my fun there is only one output which I would like to optimize and depends on the vector x. The thing is that myfun is saved in separate script and has lots of outputs. Since I want the minimization of only one of the outputs I guess that the way I showed is not correct.
As long as the first output of myfun is the value you are optimizing, and as long as you are not using the option 'GradObj'='on', it should be fine.
Matt J
on 25 Jan 2013
Well I could place it first but that is not what I am looking for.
Then wrap it in a function that does place it first.
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