GridSearchCV , what is fittingfunction ?

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shawin
shawin 2023-7-5
评论： Neev 2023-7-5
Hi,
irstparam = [1, 2, 3.3, 3.7, 8, 21]; %list of places to search for first parameter
secondparam = linspace(0,1,20); %list of places to search for second parameter
[F,S] = ndgrid(firstparam, secondparam);
fitresult = arrayfun(@(p1,p2) fittingfunction(p1,p2), F, S); %run a fitting on every pair fittingfunction(F(J,K), S(J,K))
[minval, minidx] = min(fitresult);
bestFirst = F(minidx);
bestSecond = S(minidx);
I tried to run the above code, but i have the error below :
Unrecognized function or variable 'fittingfunction'.
Please could you help ?
I need to know what fitting function should i use ?
fit() not worked ?

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回答（1 个）

Neev
Neev 2023-7-5
Hey Shawin
I have tried to reproduce the code and you will not face the error if you add a line to define your fitting function before initialising firstparam array as below:
fittingfunction = @(p1, p2) p1^2 + p2^2;
You can replace the above equation with the actual fitting function you may want to use, so that you do not face the same error that you are facing presently.
I hope I was of help :)
  2 个评论
shawin
shawin 2023-7-5
Thank you the error gone.
but the code alwayes select the min values ?
1,0 !!!!
Neev
Neev 2023-7-5
You can change that according to your desired output. Just put in constraints for the same.

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