Computational limitations on learning from examples

  • Authors:
  • Leonard Pitt;Leslie G. Valiant

  • Affiliations:
  • Univ. of Illinois, Urbana-Champaign, Urbana;Harvard Univ., Cambridge, MA

  • Venue:
  • Journal of the ACM (JACM)
  • Year:
  • 1988

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Abstract

The computational complexity of learning Boolean concepts from examples is investigated. It is shown for various classes of concept representations that these cannot be learned feasibly in a distribution-free sense unless R = NP. These classes include (a) disjunctions of two monomials, (b) Boolean threshold functions, and (c) Boolean formulas in which each variable occurs at most once. Relationships between learning of heuristics and finding approximate solutions to NP-hard optimization problems are given.