Tag
unsupervised-learning
- Aug 19, 2026 What a Distance Function Decides About Cluster Shape Squared Euclidean, cosine, Mahalanobis, and set distances each impose a different notion of similarity, and the choice fixes which clusters are available before any algorithm runs. machine learning
- Aug 24, 2025 Lloyd's Algorithm and the Local Minima of k-Means The assignment and update steps are two exact minimizations of the same objective, which is why the loop always terminates, why it stops at a local minimum, and what seeding changes about the answer. machine learning