Cohen’s kappa
Cohen’s kappa: An agreement metric correcting observed concordance for agreement expected by chance from marginal distributions. It is used for annotators and classification. Prevalence and imbalanced categories can cause counterintuitive behaviour requiring contextual interpretation. This perspective connects the definition with practical behaviour in artificial intelligence systems.
In italiano: Cohen’s KappaLegge V · Overfitting, bias e collasso dei modelliIt is used for annotators and classification. Prevalence and imbalanced categories can cause counterintuitive behaviour requiring contextual interpretation.