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Confusion Matrix Blitz
12 messages, one call each: spam or not spam. Then we build a confusion matrix from your answers — and you compute precision, recall and F1 from it yourself.
🌱 Beginner
~2 min
Concept: Evaluation Metrics
Message 1 of 12
Classify as fast as you can.
📌 Positive class = Spam
Precision = of everything you flagged as spam, how much really was. Recall = of all the real spam, how much you caught. F1 balances the two.