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Back to the lesson libraryMECHANISM · 13 MIN
M08.5 CONNECT THE MECHANISM

Find unusual cases worth investigating

At 3 a.m. a vaccine freezer reads −12 °F. Is it failing, defrosting, or lying? Learn to score how unusual a reading is, and to decide what an alert should trigger.

LESSON OVERVIEW13 min lesson

Lesson overview

At 3 a.m. a vaccine freezer reads −12 °F. Is it failing, defrosting, or lying? Learn to score how unusual a reading is, and to decide what an alert should trigger.

What you’ll explore

  • Anomaly detection ranks departures from a reference pattern; density, distance, reconstruction, and isolation methods encode different notions of unusualness.
GO TO THE SOURCE

Original explanations, connected to the research.

An Introduction to Statistical Learning — authors’ materialsIsolation Forest (Liu, Ting & Zhou, 2008)scikit-learn — novelty and outlier detection
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