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So I have a multiclass classification problem and I have found the Matthews Correlation Coefficient of that (https://scikit-learn.org/stable/modules/model_evaluation.html#matthews-correlation-coefficient). Now I want to find the Cohen kappa score for the problem. How do I formulate the Cohen kappa score with respect to a multiclass confusion matrix? What are the equations that form TP, TN, FP, and FN?

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