Solved – Equivalent measure to Matthews correlation coefficient, MCC, for multiclass classification

Question

Thanks in advance for the help.

MCC gives a measure of the quality of a binary classifier. I'm looking for a similar measure that can be used for a multi-class classifier. Ultimately what I would like to do is to compare several multi-class classifiers that I have created. I could simply look at percent correct, but I would like a secondary measure since percent correct can sometimes be misleading (especially in cases of class imbalance).

Answer 1

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0041882

They have the definition of MCC for the multiclass case. It is easy to implement it by yourself based on eq.2