A method and system for oral evaluation based on grammar analysis

Abstract

The invention discloses a spoken language evaluation method based on grammatical analysis and a spoken language evaluation system. The spoken language evaluation method is characterized in that syntax content of a voice segment can be extracted, and a syntactic tree can be established according to the syntax, and then the node similarity between the syntactic tree and the preset syntactic tree can be calculated, and the word order evaluation result of the voice segment can be acquired; the predicate verb of the voice segment can be acquired, and the predicate verb in the preset predicate verb corpus can be identified to acquire the tense evaluation result of the voice segment; the grammatical evaluation result of the voice segment can be acquired according to the word order evaluation result of the voice segment and the tense evaluation result of the voice segment. According to the invention, the spoken language evaluation can be carried out from three aspects, namely fluency, accuracy, and grammatical evaluation, and then by combining the spoken language voice quality evaluation index and the spoken language content evaluation index, the evaluation model is more objective, comprehensive, and accurate.

Description

technical field [0001] The invention relates to the technical field of speech recognition and evaluation, in particular to a method and system for oral language evaluation based on grammatical analysis. Background technique [0002] Speech signal processing technology is an important branch in the field of speech processing and speech recognition, and it is also the main core technology of today's speech recognition and speech evaluation systems. Nowadays, with the rapid development of science and technology, speech signal processing technology has penetrated into various fields, including language learning and oral automatic scoring. In language learning and automatic scoring, the purpose of using speech signal processing is to integrate the latest speech technology with current teaching and learning. Combining methods to establish a system for assisting language learning or an intelligent scoring system for spoken language. [0003] With the rapid development of science a...

AI Technical Summary

Problems solved by technology

[0007] Most of the existing evaluation systems are only aimed at the evaluation of phonemes and words, and the research on the evaluation of speech segments is also limited to a single factor, and can only evaluate the pronunciation of reading aloud questions; Pattern matching is performed on the voice, and then the pronunciation accuracy, intonation, prosody, etc. of the voice to be tested are scored. There is no grammar evaluation function for spoken English, so the evaluation given in this way is not comprehensive, and the evaluation is not objective and scientific enough.

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