Article

Out-of-Vocabulary Word Modeling and Rejection for Spanish Keyword Spotting Systems

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MICAI '02: Proceedings of the Second Mexican International Conference on Artificial Intelligence: Advances in Artificial Intelligence

Pages 156 - 165

Published: 22 April 2002 Publication History

Abstract

This paper presents a combination of out-of-vocabulary (OOV) word modeling and rejection techniques in an attempt to accept utterances embedding a keyword and reject utterances with nonkeywords. The goal of this research is to develop a robust, task-independent Spanish keyword spotter and to develop a method for optimizing confidence thresholds for a particular context. To model OOV words, we employed both word and sub-word units as fillers, combined with n-gram language models. We also introduce a methodology for optimizing confidence thresholds to control the tradeoffs between acceptance, confirmation, and rejection of utterances. Our experiments are based on a Mexican Spanish auto-attendant system using the SpeechWorks recognizer release 6.5 Second Edition, in which we achieved a reduction in error of 8.9% as compared to the baseline system. Most of the error reduction is attributed to better keyword detection in utterances that contain both keywords and OOV words.

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Cited By

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Tejedor JToledano DLopez-Otero PDocio-Fernandez LProença JPerdigão FGarcía-Granada FSanchis EPompili AAbad A(2018)ALBAYZIN Query-by-example Spoken Term Detection 2016 evaluationEURASIP Journal on Audio, Speech, and Music Processing10.1186/s13636-018-0125-92018:1(1-25)Online publication date: 1-Dec-2018
https://dl.acm.org/doi/10.1186/s13636-018-0125-9
Tejedor JToledano DLopez-Otero PDocio-Fernandez LSerrano LHernaez ICoucheiro-Limeres AFerreiros JOlcoz JLlombart J(2017)ALBAYZIN 2016 spoken term detection evaluationEURASIP Journal on Audio, Speech, and Music Processing10.1186/s13636-017-0119-z2017:1(1-23)Online publication date: 1-Dec-2017
https://dl.acm.org/doi/10.1186/s13636-017-0119-z
Tejedor JToledano DLopez-Otero PDocio-Fernandez LGarcia-Mateo C(2016)Comparison of ALBAYZIN query-by-example spoken term detection 2012 and 2014 evaluationsEURASIP Journal on Audio, Speech, and Music Processing10.1186/s13636-016-0080-22016:1(1-19)Online publication date: 1-Dec-2016
https://dl.acm.org/doi/10.1186/s13636-016-0080-2
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Index Terms

Out-of-Vocabulary Word Modeling and Rejection for Spanish Keyword Spotting Systems
1. Computing methodologies
  1. Artificial intelligence
    1. Natural language processing

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MICAI '02: Proceedings of the Second Mexican International Conference on Artificial Intelligence: Advances in Artificial Intelligence

April 2002

545 pages

ISBN:3540434755

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Springer-Verlag

Berlin, Heidelberg

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Published: 22 April 2002

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Tejedor JToledano DLopez-Otero PDocio-Fernandez LProença JPerdigão FGarcía-Granada FSanchis EPompili AAbad A(2018)ALBAYZIN Query-by-example Spoken Term Detection 2016 evaluationEURASIP Journal on Audio, Speech, and Music Processing10.1186/s13636-018-0125-92018:1(1-25)Online publication date: 1-Dec-2018
https://dl.acm.org/doi/10.1186/s13636-018-0125-9
Tejedor JToledano DLopez-Otero PDocio-Fernandez LSerrano LHernaez ICoucheiro-Limeres AFerreiros JOlcoz JLlombart J(2017)ALBAYZIN 2016 spoken term detection evaluationEURASIP Journal on Audio, Speech, and Music Processing10.1186/s13636-017-0119-z2017:1(1-23)Online publication date: 1-Dec-2017
https://dl.acm.org/doi/10.1186/s13636-017-0119-z
Tejedor JToledano DLopez-Otero PDocio-Fernandez LGarcia-Mateo C(2016)Comparison of ALBAYZIN query-by-example spoken term detection 2012 and 2014 evaluationsEURASIP Journal on Audio, Speech, and Music Processing10.1186/s13636-016-0080-22016:1(1-19)Online publication date: 1-Dec-2016
https://dl.acm.org/doi/10.1186/s13636-016-0080-2
Tejedor JFapšo MSzöke IČernocký JGrézl F(2012)Comparison of methods for language-dependent and language-independent query-by-example spoken term detectionACM Transactions on Information Systems10.1145/2328967.232897130:3(1-34)Online publication date: 6-Sep-2012
https://dl.acm.org/doi/10.1145/2328967.2328971
Wright AEvans ALinney ALincoln MLienhart RPrasad AHanjalic AChoi SBailey BSebe N(2007)The listening roomProceedings of the 15th ACM international conference on Multimedia10.1145/1291233.1291391(681-690)Online publication date: 29-Sep-2007
https://dl.acm.org/doi/10.1145/1291233.1291391

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A Word Stemming Algorithm for the Spanish Language

Large vocabulary Russian speech recognition using syntactico-statistical language modeling

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