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CROSS-SITE AND INTRA-SITE ASR SYSTEM COMBINATION: COMPARISONS ON LATTICE AND 1-BEST METHODS

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Abstract

We evaluate system combination techniques for automatic speech recognition using systems from multiple sites who participated in the TC-STAR 2006 Evaluation. Both lattice and 1-best combination techniques are tested for cross-site and intra-site tasks. For pairwise combinations the lattice based approaches can outperform 1-best ROVER with confidence scores, but 1-best ROVER results are equal (or even better) when combining three or four systems. Index Terms — speech recognition, system combination 1

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.310.8847
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