knn-bias-variance-decomposition

OUT premise — entries/2026/06/21/wiki-BiasE28093variance_tradeoff-chunk-3.md

Created 2026-06-21T09:55:49+00:00

In k-NN, the bias² term is a monotone rising function of k, the variance term is σ²/k (decreasing with k), and the third term is irreducible noise σ².