Research on Understanding of English Utterances by Second Language Speakers

第二语言使用者对英语话语的理解研究

• 批准号: 22520598
• 负责人: YAMAMOTO Seiichi
• 金额: $ 2.5万
• 依托单位: Doshisha University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22520598/
• 关键词: 音声認識; 言語処理; CALL; 言語モデル

In this research we constructed a learner corpus in which each expression was subjectively evaluated by English natives, and we developed a dialogue-based CALL system which showed answers in Japanese to questions from the system to restrict their utterances, using the learner corpus. The CALL system adopts not only commonly used automatic speech recognizers using ngram and finite state automata (FSA) designed for accepting utterances in a target domain but also one using a model of out-of-scope utterances. In this research we also propose a novel classification method which classifies the speech recognition result from the recognizer using the FSA into accepted or rejected. The classification method adopts differences among acoustic likelihoods from the multiple recognizers as well as edit distances among the multiple recognizers’ outputs as features for the classifier.

在这项研究中，我们构建了一个学习者语料库，其中每个表达是由英语母语者主观评价，我们开发了一个基于对话的CALL系统，显示在日本的回答问题的系统，以限制他们的话语，使用学习者语料库。CALL系统不仅采用了使用ngram和有限状态自动机（FSA）的常用自动语音识别器，而且还采用了使用范围外话语模型的自动语音识别器，其中，所述自动语音识别器被设计用于接受目标域中的话语。在这项研究中，我们还提出了一种新的分类方法，分类的语音识别结果从识别器使用FSA接受或拒绝。该分类方法采用多个识别器的声学似然度之间的差异以及多个识别器的输出之间的编辑距离作为分类器的特征。

项目成果

Speaker clustering in multi‐party conversation

多方对话中的说话人聚类

• 发表时间: 2011
• 作者: M. Nishida;Y. Ishikawa;Seiichi Yamamoto
• 通讯作者: Seiichi Yamamoto

Analysis on the Efficiency of Statistical Measures to Identify Network Structure of Chaos Coupled Systems

混沌耦合系统网络结构统计方法识别效率分析

• 发表时间: 2010
• 期刊: J. of Modern Physics C
• 作者: Y. Ueoka;T. Suzuki;and S. Yamamoto
• 通讯作者: and S. Yamamoto

Speaker Clustering Based on Non-Negative Matrix Factorization

• DOI: 10.21437/interspeech.2011-384
• 发表时间: 2011
• 作者: M. Nishida;Seiichi Yamamoto

Hierarchical Phrase-based Machine Translation with Word-based Reordering Model

• 发表时间: 2010-08
• 作者: K. Hayashi;Hajime Tsukada;Katsuhito Sudoh;Kevin Duh;Seiichi Yamamoto

Sentence Classification with Grammatical Errors and those Out of Scope of Grammar Assumption for Dialogue-based CALL Systems

基于对话的CALL系统中存在语法错误和超出语法假设范围的句子分类

• 发表时间: 2012
• 作者: Y. Nagai;T. Senzai;S. Yamamoto;M. Nishida
• 通讯作者: M. Nishida