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matlabparallel-processingparfor

The variable `X` in a parfor cannot be classified in MATLAB

I have a parfor loop like this:

parfor i=1:20

for j=1:5
%% Some codes

[~,~,~,AUC]=perfcurve(testTargets,testOutputs,'1');

AUC_T(i)=AUC;

end

%% averaging between AUC_Ts in outputs of j=1:5

end

I have this error after running this code:

The variable AUC_T in a parfor cannot be classified.
See Parallel for Loops in MATLAB, "Overview".

I want store AUC values and use it afrer parfor loop. What is the problem and how can i solve it?

Thanks

Solution

  • I found the solution:

    parfor i=1:20

for j=1:5
%% Some codes

[~,~,~,AUC]=perfcurve(testTargets,testOutputs,'1');

AUC_T(i,j)=AUC;

end

end

%% averaging between AUC_T values

    We should set averaging after parfor loop.

    Thank you Michael Graczyk for your commnet and answer.