Optimizing a function consisting of other variables

Question

0 个投票

Hello, I have a function as this:

function l=L2(u1, u2, w, x) l = -sum(log(((log(u1).*log(u2)).^(-1+x)).*((w.^((2-2*x)/x))-(1-x.*(w.^(1-2*x)/2)))./(u1.*u2.*exp(w.^(1/x))))); end

which u1, u2, w are 40*1 vectors, and I want to optimize this for min of x with optimtool but his gives me the error of

Error in the following problem input(s): objective: Not enough input arguments.

Can anybody help me?

1 个评论
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Matt J 2012-10-14

Show more code, in particular, the solver that you're using and the code you use to call it.

Also, use markup to make the code you post more readable, including the code in your Question.

Answer 1

Alan Weiss 2012-10-15

0 个投票

Your question might be about how to include extra parameters. See this link.

Alan Weiss

MATLAB mathematical toolbox documentation

Matt Tearle 2012-10-15

u1 = ...
u2 = ...
w  = ...
objfun = @(x) L2(u1,u2,w,x) % define a function of x with u1, u2, w fixed

Now use objfun as your objective function.

Fred 2012-10-15

Thank you for both answers