Multi-class classification metrics in R and Python I would like to ask if there is a metric in R and Python that serves not only for binary classification. I've found Matthews Correlation Coefficient works well in Python, but in R is only a binary version. Of course, I'm talking about "real" not just binary metrics - not something like "It's binary, but you can use one vs one or one vs all."
How about the MLmetrics package in R? It has multi class log loss function that you can use to assess the performance of your model.