how to plot roc for multiclass problems ?

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Newman on 20 Apr 2017
Edited: Newman on 20 Apr 2017
Hi I have been using plot roc function in the neural network.But that function plots roc per class in the classification tasks. Is it possible to plot a single roc even for multi class neural network patternent problems using the one vs all or one vs rest etc strategy?Please help me on how to start plotting such curves.I have a 40 class problem.

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