Unsupervised

8 concepts, 8 reviewed and merged.

Clustering

k-Means ClusteringPick k points to act as centres, assign every example to its nearest one, move each centre to the mean of what it…verified

Dimensionality

Principal Component AnalysisData with a thousand measurements is rarely a thousand independent things — the measurements move together.verified

Geometry

Manifold HypothesisA 224-pixel colour image lives in a space of roughly 150,000 dimensions, and almost every point in that space is…verified

Objectives

Representation