More detailed output function in optimization

2 次查看（过去 30 天）

Mohammad Shojaei Arani 2022-8-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1772480-more-detailed-output-function-in-optimization

评论： Mohammad Shojaei Arani 2022-8-2

Hello,

I think I have a simple question but found it difficult to fix it myself.

In doing the optimization we can have 'our' output function. The following represents roughly my code and my output function:

Extra_param = A number;

options=optimoptions('fmincon','OutputFcn',@myoutput,'StepTolerance',10^(-8));

fmincon(cost,x0,[],[],[],[],lb,ub,[],options);

function stop = myoutput(x,optimvalues,state);

stop = false;

if isequal(state,'iter')

disp(num2str(x));

end

I would like the output function to dsplay me another parameter called 'Extra_param' which is not related to the optimum values or optimum state. It is just an extra parameter (and has nothing to do with the optimization problem being solved). so, I would like something like bellow:

function stop = myoutput(x,optimvalues,state,Extra_param);

stop = false;

if isequal(state,'iter')

disp(num2str(x));

disp(num2str(Extra_param));

end

But, unfortunately I get the following error message:

Unrecognized function or variable 'Extra_param'.