Sharpening Occam's razor

  • Authors:
  • Ming Li;John Tromp;Paul Vitányi

  • Affiliations:
  • Department of Computer Science, University of California Santa Barbara, CA;CWI, Kruislaan 413, 1098 SJ Amsterdam, The Netherlands;CWI, Kruislaan 413, 1098 SJ Amsterdam, The Netherlands

  • Venue:
  • Information Processing Letters
  • Year:
  • 2003

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Abstract

We provide a new representation-independent formulation of Occam's razor theorem, based on Kolmogorov complexity. This new formulation allows us to: (i) obtain better sample complexity than both length-based [Blumer et al., Inform. Process. Lett. 24 (1987) 377-380] and VC-based [Blumer et al., J. ACM 35 (1989) 929-965] versions of Occam's razor theorem, in many applications; and (ii) achieve a sharper reverse of Occam's razor theorem than that of Board and Pitt [STOC, 1999, pp. 54-63]. Specifically, we weaken the assumptions made by Board and Pitt [STOC, 1999, pp. 54-63] and extend the reverse to superpolynomial running times.