Automatic prosody evaluation and grammatical mistake detection for English learning by Japanese native speakers

日语母语者英语学习的自动韵律评估和语法错误检测

• 批准号: 20320075
• 负责人: ITO Akinori
• 金额: $ 3.99万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20320075/
• 关键词: e-ラーニング・コンピュータ支援教育; 英語発音教育; 外国語学習システム; 英語学習システム; 発音評価; イントネーション; 重回帰分析; 文法誤り検出; 文法誤りルール; N-gram; 音声合成; マハラノビス距離; リズム

I have developed two methods that enable speaking exercise in a computer-assisted language learning (CALL) system : a method for evaluating prosody of an English utterance made by a learner, and a method for detecting grammatical mistakes included in the learner's utterance. As for prosody evaluation, I developed an estimation method of word importance factors using a decision tree, and obtained a high correlation to human assessment score, which is comparable to correlation between scores given by human evaluators. As for the grammatical mistake detection, I proposed a method for training an n-gram language model from artificially generated sentences with mistakes, and obtained 89.2% word accuracy.

我已经开发了两种在计算机辅助语言学习(Call)系统中实现口语练习的方法：一种用于评估学习者的英语话语的韵律的方法，以及一种用于检测学习者的话语中包括的语法错误的方法。在韵律评价方面，提出了一种基于决策树的词语重要性因子估计方法，得到了与人类评价分数高度相关的结果，可以与人类评价者给出的分数之间的相关性相媲美。在语法错误检测方面，提出了一种从人工生成的错误句子中训练n元语法语言模型的方法，获得了89.2%的单词准确率。

项目成果

Recognition of English utterances with grammatical and lexical mistakes for dialogue-based CALL system

• DOI: 10.21437/interspeech.2008-479
• 发表时间: 2008
• 作者: Akinori Ito;Ryohei Tsutsui;S. Makino;Motoyuki Suzuki

Evaluation of English Intonation based on Combination of Multiple Evaluation Scores

基于多重评价分数组合的英语语调评价

• 发表时间: 2009
• 期刊: Proc.Of Interspeech 無
• 作者: Akinori Ito;Tomoaki Konno;Masashi Ito;Shozo Makino
• 通讯作者: Shozo Makino

Grammatical error detection from English utterances spoken by Japanese

从日本人所说的英语话语中检测语法错误

• 发表时间: 2011
• 期刊: Proceedings of 2nd Asian-Pacific Signal and Infor mat ion Processing Association Annual Summit and C onference
• 作者: Takuya Anzai;Seongjun Hahm;AkinoriIto.Masashi Ito;Shozo Makino
• 通讯作者: Shozo Makino

Evaluation of English Intonation of Japanese Learners Using Synthesized Speech

使用合成语音评价日语学习者的英语语调

• 发表时间: 2008
• 作者: Tomoaki Konno;Masashi Ito;Motoyuki Suzuki;Akinori Ito;Shozo Makino
• 通讯作者: Shozo Makino

Intonation Evaluation of English Utterances Using Synthesized Speech for Computer-Assisted Language Learning

使用计算机辅助语言学习的合成语音对英语话语进行语调评估

• 发表时间: 2010
• 期刊: International Journal of Innovative Computing, Information and Control vol.6
• 作者: Akinori Ito;Tomoaki Konno;Masashi Ito;Shozo Makino;Motoyuki Suzuki
• 通讯作者: Motoyuki Suzuki