ValueError: Only one class present in y_true. ROC AUC score is not defined in that case.

[akhanss]

Hi,
Thanks for a valuable repo and optimized implementation of several metrics. When I try to run this command "isic-challenge-scoring classification TRUTH.csv PREDICTIONS.csv", it gives me an error as follows:

ValueError: Only one class present in y_true. ROC AUC score is not defined in that case.

A few lines of TRUTH.csv

image,MEL,NV,BCC,AK,BKL,DF,VASC,SCC,UNK
ISIC_0000000,0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0
ISIC_0000001,0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0
ISIC_0000002,1.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0
ISIC_0000003,0.0,1.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0
ISIC_0000004,1.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0

A few lines of PREDICTIONS.csv

image,MEL,NV,BCC,AK,BKL,DF,VASC,SCC,UNK
ISIC_0000000,0.130210,0.704888,0.300995,0.105880,0.504354,0.887364,0.184612,0.143236,0.448738
ISIC_0000001,0.219628,0.961962,0.035617,0.210906,0.974445,0.353588,0.237173,0.812199,0.146444
ISIC_0000002,0.018923,0.366575,0.383216,0.855024,0.319168,0.625167,0.941004,0.446885,0.270534
ISIC_0000003,0.176881,0.629271,0.761698,0.118103,0.941182,0.508196,0.662666,0.801909,0.769961
ISIC_0000004,0.636356,0.791720,0.413283,0.123713,0.052849,0.684307,0.268413,0.431863,0.127759

Could you please check at your convenience? Thank you very much.
Regards,
Azam.