Core ML Concepts · beginner · concept 16 of 311 · Updated Nov 4, 2026
Logistic Regression
The industry-default baseline classifier: a linear model pushed through a sigmoid so its output reads as a probability. It is also the bridge to deep learning, since a single sigmoid neuron trained with cross-entropy IS logistic regression. Interpretable, fast, and the first thing to try before anything fancier.
Key terms
SigmoidDecision boundaryLog oddsCross-entropyBaseline model
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Where you meet it in the real world
Credit default scoring, click-through prediction, medical risk models, every A/B test readout
Videos
▶ StatQuest: Logistic Regression ↗
StatQuest with Josh Starmer · YouTube
▶ Machine Learning and Logistic Regression ↗
IBM Technology · YouTube
Guides and articles
Courses, papers, and more
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