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A SYMMETRIZATION OF THE SUBSPACE GAUSSIAN MIXTURE MODEL

Full Paper at IEEE Xplore

Acoustic Modeling

Presented by: Daniel Povey, Author(s): Daniel Povey, Microsoft Corporation, United States; Martin Karafiát, Brno University of Technology, Czech Republic; Arnab Ghoshal, University of Saarland, Czech Republic; Petr Schwarz, Brno University of Technology, Czech Republic

Last year we introduced the Subspace Gaussian Mixture Model (SGMM), and we demonstrated Word Error Rate improvements on a fairly small-scale task. Here we describe an extension to the SGMM, which we call the symmetric SGMM. It makes the model fully symmetric between the ``speech-state vectors'' and ``speaker vectors'' by making the mixture weights depend on the speaker as well as the speech state. We find that the symmetric SGMM can give a very worthwhile improvement over the previously described model. We will also describe some larger-scale experiments with the SGMM, and report on progress toward releasing open-source software that supports SGMMs.

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  Lecture Information

Recorded: 2011-05-25 15:05 - 15:25, Panorama
Added: 15. 6. 2011 16:17
Number of views: 182
Video resolution: 1024x576 px, 512x288 px
Video length: 0:19:39
Audio track: MP3 [6.64 MB], 0:19:39