surrogateopt: output function

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Geopaul 2022-8-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1776425-surrogateopt-output-function

评论： Alan Weiss 2022-8-11

How do we create a customize output function for the 'surrogateopt' that will show the solution at every iteration. I need am example for better understanding. Thank you.

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采纳的回答

Alan Weiss 2022-8-9

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1776425-surrogateopt-output-function#answer_1023655

在 MATLAB Online 中打开

Try this.

lb = [-3 -3];
ub = -lb;
opts = optimoptions('surrogateopt','OutputFcn',@listout);
obj = @(x)100*(x(2) - x(1)^2)^2 + (1 - x(1))^2;
[sol,fval] = surrogateopt(obj,lb,ub,opts)
function stop = listout(x,optimValues,state)
stop = false;
switch state
    case 'iter'
    nval = optimValues.funccount;
    y = optimValues.currentX;
    fprintf("Number of fevals = %g, x = [%g,%g]\n",nval,y(1),y(2))
end
end