Computer-implemented systems and methods for estimating word accuracy for automatic speech recognition

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United States of America Patent

PATENT NO 9652999
SERIAL NO

13095980

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Abstract

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Systems and methods are provided for scoring non-native, spontaneous speech. A spontaneous speech sample is received, where the sample is of spontaneous speech spoken by a non-native speaker. Automatic speech recognition is performed on the sample using an automatic speech recognition system to generate a transcript of the sample, where a speech recognizer metric is determined by the automatic speech recognition system. A word accuracy rate estimate is determined for the transcript of the sample generated by the automatic speech recognition system based on the speech recognizer metric. The spontaneous speech sample is scored using a preferred scoring model when the word accuracy rate estimate satisfies a threshold, and the spontaneous speech sample is scored using an alternate scoring model when the word accuracy rate estimate fails to satisfy the threshold.

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Patent Owner(s)

Patent OwnerAddress
EDUCATIONAL TESTING SERVICEROSEDALE ROAD PRINCETON NJ 08541

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Lei Pennington, US 979 4055
Yoon, Su-Youn Lawrenceville, US 12 139
Zechner, Klaus Princeton, US 29 444

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