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KARAFIÁT, M., BURGET, L., ČERNOCKÝ, J.
Original Title
Using Smoothed Heteroscedastic Linear Discriminant Analysis in Large Vocabulary Continuous Speech Recognition System
Type
conference paper
Language
English
Original Abstract
In the state-of-the-art speech recognition systems, Heteroscedastic Linear Discriminant Analysis (HLDA) is becoming popular technique allowing for feature decorrelation and dimensionality reduction. However, HLDA relies on statistics, which may not be reliably estimated when only limited amount of training data is available. Recently, Smoothed HLDA (SHLDA) was proposed as a robust modification of HLDA. Previously, SHLDA was successfully used for feature combination in small vocabulary recognition experiments. In this work, we verify that SHLDA can be advantageously used also for Large Vocabulary Continuous Speech Recognition.
Keywords
speech recognition, LVCSR, HLDA, feature transform, dimensionality reduction
Authors
RIV year
2005
Released
20. 9. 2005
Location
Edinbourgh
Pages from
1
Pages to
8
Pages count
URL
https://www.fit.vutbr.cz/~karafiat/publi/2005/karafiat_mlmi2005.pdf
BibTex
@inproceedings{BUT18264, author="Martin {Karafiát} and Lukáš {Burget} and Jan {Černocký}", title="Using Smoothed Heteroscedastic Linear Discriminant Analysis in Large Vocabulary Continuous Speech Recognition System", booktitle="2nd Joint Workshop on Multimodal Interaction and Related Machine Learning Algorithms", year="2005", pages="8", address="Edinbourgh", url="https://www.fit.vutbr.cz/~karafiat/publi/2005/karafiat_mlmi2005.pdf" }