Conference paper

EGOROVA Ekaterina and BURGET Lukáš. Out-of-Vocabulary Word Recovery Using FST-Based Subword Unit Clustering in a Hybrid ASR System. In: Proceedings of ICASSP 2018. Calgary: IEEE Signal Processing Society, 2018, pp. 5919-5923. ISBN 978-1-5386-4658-8.
Publication language:english
Original title:Out-of-Vocabulary Word Recovery Using FST-Based Subword Unit Clustering in a Hybrid ASR System
Title (cs):Doplňování slov mimo slovník pomocí shlukování pod-slovních jednotek založeného na FST v hybridním ASR systému
Pages:5919-5923
Proceedings:Proceedings of ICASSP 2018
Conference:2018 IEEE International Conference on Acoustics, Speech and Signal Processing
Place:Calgary, CA
Year:2018
ISBN:978-1-5386-4658-8
Publisher:IEEE Signal Processing Society
URL:http://www.fit.vutbr.cz/research/groups/speech/publi/2018/egorova_icassp2018_0005919.pdf [PDF]
Keywords
Out-of-vocabulary Words, Robust ASR
Annotation
The paper presents a new approach to extracting useful information from out-of-vocabulary (OOV) speech regions in ASR system output. The system makes use of a hybrid decoding network with both words and sub-word units. In the decoded lattices, candidates for OOV regions are identified as sub-graphs of sub-word units. To facilitate OOV word recovery, we search for recurring OOVs by clustering the detected candidate OOVs. The metrics for clustering is based on a comparison of the sub-graphs corresponding to the OOV candidates. The proposed method discovers repeating outof- vocabulary words and finds their graphemic representation more robustly than more conventional techniques taking into account only one best sub-word string hypotheses.
BibTeX:
@INPROCEEDINGS{
   author = {Ekaterina Egorova and Luk{\'{a}}{\v{s}} Burget},
   title = {Out-of-Vocabulary Word Recovery Using FST-Based Subword Unit
	Clustering in a Hybrid ASR System},
   pages = {5919--5923},
   booktitle = {Proceedings of ICASSP 2018},
   year = {2018},
   location = {Calgary, CA},
   publisher = {IEEE Signal Processing Society},
   ISBN = {978-1-5386-4658-8},
   language = {english},
   url = {http://www.fit.vutbr.cz/research/view_pub.php?id=11725}
}

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