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Multi-Class Metrics Made Simple, Part III: the Kappa Score (aka Cohen's Kappa Coefficient) | by Boaz Shmueli | Towards Data Science
How to Calculate Cohen's Kappa in Python - Statology
Building a Web App to Calculate Cohen's Kappa Coefficient | by Cole Hagen | Towards Data Science
python - Sklearn - Multi-class confusion matrix for ordinal data - Stack Overflow