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arXiv · 1210.4855

A Slice Sampler for Restricted Hierarchical Beta Process with Applications to Shared Subspace Learning

Sunil Kumar Gupta·Dinh Q. Phung·Svetha Venkatesh
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Abstract

Hierarchical beta process has found interesting applications in recent years. In this paper we present a modified hierarchical beta process prior with applications to hierarchical modeling of multiple data sources. The novel use of the prior over a hierarchical factor model allows factors to be shared across different sources. We derive a slice sampler for this model, enabling tractable inference even when the likelihood and the prior over parameters are non-conjugate. This allows the application of the model in much wider contexts without restrictions. We present two different data generative models a linear GaussianGaussian model for real valued data and a linear Poisson-gamma model for count data. Encouraging transfer learning results are shown for two real world applications text modeling and content based image retrieval.

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Sunil Kumar Gupta, Dinh Q. Phung, Svetha Venkatesh. 2012-10-16. A Slice Sampler for Restricted Hierarchical Beta Process with Applications to Shared Subspace Learning. https://arxiv.org/abs/1210.4855

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