Study Establishes Fundamental Limits for Classification with Rare Useful Features

A new paper analyzes multiclass classification in high-dimensional feature spaces where only a vanishing fraction of features are useful, deriving fundamental limits and showing the optimality of a Diversity Pursuit Higher Criticism Thresholding approach.

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1. 2026-11-03 05:00 · arXiv stat.ML
   Multiclass Classification with Rare Useful Features: Fundamental Limits and the Optimality of Diversity Pursuit Higher Criticism Thresholding