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The bag-of-words (BoW) model has been widely used for acoustic event classification (AEC). The performance of the BoW based AEC model is much influenced by "codebook construction" and "histogram generation". The common approaches for constructing the codebook and generating the histogram are the K-means and vector quantization encoding (VQE) respectively. However, they have some...
In this paper, we propose a novel interpolated language model that combines the interpolation and the backing-off along hierarchical classes based on class hierarchy. And the corresponding approach to the estimation of interpolation coefficients is also presented. We use the Minimum Discriminative Information (MDI) method to cluster the vocabulary into a word-clustering tree hierarchically. The tree...
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