A bayesian nonparametric joint factor model for learning shared and individual subspaces from multiple data sources
Gupta, Sunil Kumar, Phung, Dinh and Venkatesh, Svetha 2012, A bayesian nonparametric joint factor model for learning shared and individual subspaces from multiple data sources, in SDM 2012 : Proceedings of the 12th SIAM International Conference on Data Mining, Society for Industrial and Applied Mathemations (SIAM), Anaheim, Calif., pp. 200-212.
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Title
A bayesian nonparametric joint factor model for learning shared and individual subspaces from multiple data sources
Society for Industrial and Applied Mathemations (SIAM)
Place of publication
Anaheim, Calif.
Summary
Joint analysis of multiple data sources is becoming increasingly popular in transfer learning, multi-task learning and cross-domain data mining. One promising approach to model the data jointly is through learning the shared and individual factor subspaces. However, performance of this approach depends on the subspace dimensionalities and the level of sharing needs to be specified a priori. To this end, we propose a nonparametric joint factor analysis framework for modeling multiple related data sources. Our model utilizes the hierarchical beta process as a nonparametric prior to automatically infer the number of shared and individual factors. For posterior inference, we provide a Gibbs sampling scheme using auxiliary variables. The effectiveness of the proposed framework is validated through its application on two real world problems - transfer learning in text and image retrieval.
ISBN
9781611972320
Language
eng
Field of Research
089999 Information and Computing Sciences not elsewhere classified
Socio Economic Objective
970108 Expanding Knowledge in the Information and Computing Sciences
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