precision-recall

1 free lesson tagged precision-recall across AI. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.

intermediate

Classification: Logistic Regression and Metrics That Do Not Lie

A classifier outputs a score; you choose where to cut it. Learn how logistic regression and log loss work, why 99% accuracy can be worthless on rare events, how precision, recall and PR curves expose it, and how to pick a threshold from the real costs of each mistake.

10 steps·~15 min

Classification: Logistic Regression and Metrics That Do Not Lie

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