Adaptive and self-averaging Thouless-Anderson-Palmer mean-field theory for probabilistic modeling

Manfred Opper and Ole Winther
Phys. Rev. E 64, 056131 – Published 30 October 2001
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Abstract

We develop a generalization of the Thouless-Anderson-Palmer (TAP) mean-field approach of disorder physics, which makes the method applicable to the computation of approximate averages in probabilistic models for real data. In contrast to the conventional TAP approach, where the knowledge of the distribution of couplings between the random variables is required, our method adapts to the concrete set of couplings. We show the significance of the approach in two ways: Our approach reproduces replica symmetric results for a wide class of toy models (assuming a nonglassy phase) with given disorder distributions in the thermodynamic limit. On the other hand, simulations on a real data model demonstrate that the method achieves more accurate predictions as compared to conventional TAP approaches.

  • Received 10 May 2001

DOI:https://doi.org/10.1103/PhysRevE.64.056131

©2001 American Physical Society

Authors & Affiliations

Manfred Opper1 and Ole Winther2

  • 1Neural Computing Research Group, School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, United Kingdom
  • 2Center for Biological Sequence Analysis, BioCentrum DTU, Technical University of Denmark, B208, 2800 Lyngby, Denmark;Informatics and Mathematical Modelling, Technical University of Denmark, B321, 2800 Lyngby, Denmark;Theoretical Physics, Lund University, Sölvegatan 14 A, 223 62 Lund, Sweden

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Vol. 64, Iss. 5 — November 2001

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