A system and method of using meta-data in speech-processing

G - Physics – 06 – F

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G06F 17/20 (2006.01) G10L 15/06 (2006.01) G10L 15/18 (2006.01)

Patent

CA 2486125

Methods relate to generating a language model for use in, for example, a spoken dialog system or some other application. The method comprises building a class- based language model, generating at least one sequence network and replacing class labels in the class-based language model with the at least one sequence network. In this manner, placeholders or tokens associated with classes can be inserted into the models at training time and word/phone networks can be built based on meta-data information at test time. Finally, the placeholder token can be replaced with the word/phone networks at run time to improve recognition of difficult words such as proper names.

Des méthodes pour générer un modèle de langage à utiliser, par exemple, dans un système de dialogue vocal ou une autre application quelconque. La méthode comprend l'élaboration d'un modèle de langage basé sur la classe, la génération d'au moins un réseau de séquence et le remplacement d'étiquettes de classe dans le modèle de langage basé sur la classe par au moins un réseau de séquence. De cette façon, des paramètres substituables ou des unités lexicales associés aux classes peuvent être insérés dans les modèles au moment de la formation et des réseaux de mots/phonèmes peuvent être élaborés en fonction de l'information de métadonnées au moment de l'essai. Enfin, l'unité lexicale substituable peut être remplacée par des réseaux de mots/phonèmes au moment de l'utilisation pour améliorer la reconnaissance de mots difficiles tels que des noms propres.

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