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dc.contributor | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
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dc.contributor | Universitat Politècnica de Catalunya. VEU - Grup de Tractament de la Parla |
dc.contributor.author | Lleida Solano, Eduardo |
dc.contributor.author | Mariño, José B. |
dc.contributor.author | Salavedra Molí, Josep |
dc.contributor.author | Bonafonte Cávez, Antonio |
dc.contributor.author | Monte Moreno, Enrique |
dc.date | 1993 |
dc.identifier.citation | Lleida, E., Mariño, J., Salavedra, J., Bonafonte, A., Monte, E. Out-of-vocabulary word modelling and rejection for keyword spotting. A: European Conference on Speech Communication and Technology. "EUROSPEECH 1993: 3rd European Conference on Speech Communication and Technology: Berlin, Germany: September 22-25, 1993". Berlin: International Speech Communication Association (ISCA), 1993. |
dc.identifier.uri | http://hdl.handle.net/2117/105123 |
dc.description.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. |
dc.description.abstract | Peer Reviewed |
dc.language.iso | eng |
dc.publisher | International Speech Communication Association (ISCA) |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights | info:eu-repo/semantics/openAccess |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject | Telecommunication |
dc.subject | Telecomunicació |
dc.title | Out-of-vocabulary word modelling and rejection for keyword spotting |
dc.type | info:eu-repo/semantics/publishedVersion |
dc.type | info:eu-repo/semantics/conferenceObject |