Tag: machine learning

All the articles with the tag "machine learning".

• Stein's paradox

  Posted on: Apr 19, 2024

  In three or more dimensions the sample mean is dominated everywhere by a shrinkage estimator. The reason is the Gaussian shell, and the idea is a precursor of ridge regression.

• Nearest neighbor breaks in high dimensions

  Posted on: Jul 22, 2023

  In high dimensions, all pairwise distances become essentially equal. Nearest and farthest neighbor are no longer meaningfully different. A short geometric tour of the curse of dimensionality.

• Effects of graph convolutions in multi-layer networks

  Posted on: Feb 7, 2023

  Our ICLR 2023 paper: graph convolutions provably lower the feature-signal threshold for node classification, and two convolutions help much more than one.