Regularization and decimation pseudolikelihood approaches to statistical inference in XY spin models

Payal Tyagi, Alessia Marruzzo, Andrea Pagnani, Fabrizio Antenucci, and Luca Leuzzi
Phys. Rev. B 94, 024203 – Published 15 July 2016

Abstract

We implement a pseudolikelihood approach with l1 and l2 regularizations as well as the recently introduced pseudolikelihood with decimation procedure to the inverse problem in continuous spin models on arbitrary networks, with arbitrarily disordered couplings. Performances of the approaches are tested against data produced by Monte Carlo numerical simulations and compared also to previously studied fully connected mean-field-based inference techniques. The results clearly show that the best network reconstruction is obtained through the decimation scheme, which also allows us to make the inference down to lower temperature regimes. Possible applications to phasor models for light propagation in random media are proposed and discussed.

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  • Received 24 March 2016
  • Revised 21 June 2016

DOI:https://doi.org/10.1103/PhysRevB.94.024203

©2016 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsInterdisciplinary PhysicsNetworksPhysics of Living SystemsAtomic, Molecular & Optical

Authors & Affiliations

Payal Tyagi1, Alessia Marruzzo1, Andrea Pagnani2,3, Fabrizio Antenucci1, and Luca Leuzzi1,4

  • 1CNR-NANOTEC, Institute of Nanotechnology, Rome - Soft and Living Matter Laboratory, Piazzale Aldo Moro 5, I-00185 Rome, Italy
  • 2Department of Applied Science and Technology and Center for Computational Sciences, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
  • 3Human Genetics Foundation - Torino, Via Nizza 52, Torino, Italy
  • 4Dipartimento di Fisica, Università “Sapienza”, Piazzale Aldo Moro 5, I-00185 Rome, Italy

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Issue

Vol. 94, Iss. 2 — 1 July 2016

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