Learning probability distributions over permutations by means of Fourier coefficients

Ekhine Irurozki, Borja Calvo, Jose A. Lozano

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An increasing number of data mining domains consider data that can be represented as permutations. Therefore, it is important to devise new methods to learn predictive models over datasets of permutations. However, maintaining probability distributions over the space of permutations is a hard task since there are n! permutations of n elements. The Fourier transform has been successfully generalized to functions over permutations. One of its main advantages in the context of probability distributions is that it compactly summarizes approximations to functions by discarding high order marginals information. In this paper, we present a method to learn a probability distribution that approximates the generating distribution of a given sample of permutations. In particular, this method learns the Fourier domain information representing this probability distribution.

Original languageEnglish
Title of host publicationAdvances in Artificial Intelligence - 24th Canadian Conference on Artificial Intelligence, Canadian AI 2011, Proceedings
PublisherSpringer Verlag
Pages186-191
Number of pages6
ISBN (Print)9783642210426
DOIs
Publication statusPublished - 1 Jan 2011
Externally publishedYes

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6657 LNAI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Keywords

  • Probabilistic modeling
  • learning
  • permutation
  • ranking

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