Publication Details

Combination of strongly and weakly constrained recognizers for reliable detection of OOVs

BURGET, L.; SCHWARZ, P.; MATĚJKA, P.; HANNEMANN, M.; RASTROW, A.; WHITE, C.; KHUDANPUR, S.; HEŘMANSKÝ, H.; ČERNOCKÝ, J. Combination of strongly and weakly constrained recognizers for reliable detection of OOVs. Proc. International Conference on Acoustics, Speech, and Signal Processing (ICASSP). Las Vegas: IEEE Signal Processing Society, 2008. p. 1-4. ISBN: 1-4244-1484-9.
Czech title
Kombinace silných a slabých rozpoznávačů pro spolehlivé určení OOV slov
Type
conference paper
Language
English
Authors
Burget Lukáš, doc. Ing., Ph.D. (DCGM)
Schwarz Petr, Ing., Ph.D. (DCGM)
Matějka Pavel, Ing., Ph.D. (DCGM)
Hannemann Mirko, Ph.D.
Rastrow Ariya
White Christopher
Khudanpur Sanjeev
Heřmanský Hynek, prof. Ing. (DCGM)
Černocký Jan, prof. Dr. Ing. (DCGM)
URL
Keywords

speech processing, speech recognition, OOV detection, utterance verification

Abstract

The paper is on the description of combination of strongly and weakly constrained  recognizers for reliable detection of OOVs.

Annotation

This paper addresses the detection of OOV segments in the output of large vocabulary continuous speech recognition (LVCSR) system. First, standard confidence measures based on frame-based word- and phone- posteriors are investigated. Substantial improvement was however obtained when posteriors from two systems - strongly constrained (LVCSR) and weakly constrained (phone posterior estimator) were combined. We show that this approach is suitable also for the detection of general recognition errors. All the results are presented on WSJ task with reduced recognition vocabulary.

Published
2008
Pages
1–4
Proceedings
Proc. International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
ISBN
1-4244-1484-9
Publisher
IEEE Signal Processing Society
Place
Las Vegas
BibTeX 
@inproceedings{BUT27762,
  author="Lukáš {Burget} and Petr {Schwarz} and Pavel {Matějka} and Mirko {Hannemann} and Ariya {Rastrow} and Christopher {White} and Sanjeev {Khudanpur} and Hynek {Heřmanský} and Jan {Černocký}",
  title="Combination of strongly and weakly constrained  recognizers for reliable detection of OOVs",
  booktitle="Proc. International Conference on Acoustics, Speech, and Signal Processing (ICASSP)",
  year="2008",
  pages="1--4",
  publisher="IEEE Signal Processing Society",
  address="Las Vegas",
  isbn="1-4244-1484-9",
  url="http://www.fit.vutbr.cz/research/groups/speech/publi/2008/oov_icassp2008_final.pdf"
}
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