2
votes
0answers
53 views

Is there an effect size for Kappa's?

I am staring a project on comparing standard ways of creating a classifier with some heuristic methods. The heuristic methods should result in a faster training for the classifier but should result in ...
4
votes
1answer
1k views

Kappa statistic in plain English?

I'm reading a data mining book and it mentioned the Kappa statistic as a mean for evaluating the predication performance of classifiers. However I just can't understand this. I also checked wikipedia ...
1
vote
3answers
81 views

Is this classifier random?

I trained a classifier and got the following stats on some test data: ...
1
vote
0answers
54 views

When should I prefer kappa over accuracy for binary classification problems?

I'm using the caret package in R that provides two kind of metrics for classification problems - accuracy and kappa. When should ...