GridSearchCV , what is fittingfunction ?

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 ? 

Answer 1

[Neev]

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 :)

[shawin]

Thank you the error gone.

but the code alwayes select the min values ?

1,0 !!!!

[Neev]

You can change that according to your desired output. Just put in constraints for the same.