Spoken language proficiency assessment by computer

G - Physics – 09 – B

Patent

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G09B 7/00 (2006.01) G09B 19/06 (2006.01) G10L 15/00 (2006.01)

Patent

CA 2615995

A system and method for spoken language proficiency assessment by a computer is described. A user provides a spoken response to a constructed response question. A speech recognition system processes the spoken response into a sequence of linguistic units. At training time, features matching a linguistic template are extracted by identifying matches between a training sequence of linguistic units and pre-selected templates. Additionally, a generalized count of the extracted features is computed. At runtime, linguistic features are detected by comparing a runtime sequence of linguistic units to the feature set extracted at training time. This comparison results in a generalized count of linguistic features. The generalized count is then used to compute a score.

La présente invention concerne un système et un procédé pour l~évaluation de compétence en langue parlée par un ordinateur. Un utilisateur fournit une réponse parlée à une question à réponse construite. Un système de reconnaissance de la parole traite la réponse parlée dans une séquence d~unités linguistiques. Lors de la formation, les caractéristiques correspondant à un modèle linguistique sont extraites en identifiant les correspondances entre une séquence de formation d~unités linguistiques et des modèles présélectionnés. En outre, un compte global des caractéristiques extraites est calculé. Lors de l~exécution, les caractéristiques linguistiques sont détectées en comparant une séquence d~exécution d~unités linguistiques et l~ensemble de caractéristiques extrait lors de la formation. Cette comparaison donne un comptage global de caractéristiques linguistiques. Le compte global est alors utilisé pour calculer un score.

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