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An Extension of the Infinite Relational Model Incorporating Interaction between Objects

  • Iku Ohama
  • Hiromi Iida
  • Takuya Kida
  • Hiroki Arimura
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7819)

Abstract

The Infinite Relational Model (IRM) introduced by Kemp et al. (Proc. AAAI2006) is one of the well-known probabilistic generative models for the co-clustering of relational data. The IRM describes the relationship among objects based on a stochastic block structure with infinitely many clusters. Although the IRM is flexible enough to learn a hidden structure with an unknown number of clusters, it sometimes fails to detect the structure if there is a large amount of noise or outliers. To overcome this problem, in this paper we propose an extension of the IRM by introducing a subset mechanism that selects a part of the data according to the interaction among objects. We also present posterior probabilities for running collapsed Gibbs sampling to learn the model from the given data. Finally, we ran experiments on synthetic and real-world datasets, and we showed that the proposed model is superior to the IRM in an environment with noise.

Keywords

relational data co-clustering generative model subset selection 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Iku Ohama
    • 1
  • Hiromi Iida
    • 1
  • Takuya Kida
    • 2
  • Hiroki Arimura
    • 2
  1. 1.Corporate R&D DivisionPanasonic CorporationOsakaJapan
  2. 2.Division of Computer ScienceHokkaido UniversityHokkaidoJapan

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