Section 2
Unsupervised Learning & Dimensionality Reduction
Section 1 built models that learn from an answer key. Section 2 builds models that have to find the pattern themselves — grouping similar points, compressing redundant features, and flagging what doesn't belong, all without ever being told the "correct" answer.
Chapters
6
Lesson Reading
2 hr 20 min
Labs
6
Interview Sets
6
Chapter Path
Chapter 7Clustering: K-Means from Scratch25 minutesAcademy PassChapter 8Hierarchical & Density-Based Clustering20 minutesAcademy PassChapter 9Principal Component Analysis25 minutesAcademy PassChapter 10Anomaly Detection25 minutesAcademy PassChapter 11Recommender Systems20 minutesAcademy PassChapter 12Feature Engineering & Data Preprocessing25 minutesAcademy Pass