Data Skeptic

[MINI] k-Nearest Neighbors

Jul 24, 2015 · 8 min · 9.4 MB
0:00-8:33

Streams straight from the publisher. podnod never proxies or re-hosts episode audio.

This episode explores the k-nearest neighbors algorithm which is an unsupervised, non-parametric method that can be used for both classification and regression. The basica concept is that it leverages some distance function on your dataset to find the $k$ closests other observations of the dataset and averaging them to impute an unknown value or unlabelled datapoint.