中文

Contradiction Graphs Determine VC Dimension

机器学习 2026-05-21 v1 离散数学 机器学习

摘要

We study the contradiction graphs associated with binary concept classes. For a class H{0,1}XH \subseteq \{0,1\}^X, the order-mm contradiction graph Gm(H)G_m(H) has as vertices the HH-realizable labeled sequences of length mm, with two vertices adjacent when the two sequences assign opposite labels to some common domain point. Our main result is that the single graph Gm(H)G_m(H) determines the threshold predicate VCdim(H)m\mathrm{VCdim}(H)\ge m. Consequently, the full sequence (Gm(H))m1(G_m(H))_{m \ge 1} determines the exact VC dimension and, in particular, detects finite versus infinite VC dimension, answering a question posed by Alon et al. (2024).

引用

@article{arxiv.2605.20434,
  title  = {Contradiction Graphs Determine VC Dimension},
  author = {Jesse Campbell and Daniel Ibaibarriaga and Lev Reyzin},
  journal= {arXiv preprint arXiv:2605.20434},
  year   = {2026}
}