Construction of training system for novice Japanese conversation beased on the communicative approach

1.自然语言理解单元的开发我们以搜索酒店为目标任务，对输入句子的必要概念、词汇和风格进行了案例研究。根据研究结果，设计了知识表示方法，并开发了自然语言理解单元.我们研制了一个智能单元，它根据句子中是否含有句法错误，以及句子是否能与会话上下文相匹配来对错误句子进行分类。基于这种分类，我们的系统可以为每个学习者生成可采纳的消息.教学策略的设计与实施我们设计了一套针对新手日语对话训练的教学策略。如果一个学习者输入了一些错误的句子，系统应该考虑是否应该指出学习者的错误很快，或者它应该继续对话。我们采用了一种名为“关注形式”的教学方法，并开发了一个从输入句子中检测出某种形式的单词的单元，以实现基于“关注形式“的会话.开发创作工具我们开发了一个创作工具，它可以根据表示当前会话情况的自然语言句子生成表示当前会话情况的“情况知识”。5.训练系统的构建及其评价我们开发了一个针对日语初学者的会话训练系统，并通过测试该系统对日语初学者典型错误的识别能力来评价该系统.我们将发布一份关于这项研究结果的技术报告。

1. Development of natural language understanding unitWe set the task of searching a hotel as our target task, and performed case study on necessary concepts, vocabularies, and styles of input sentences. According to the result, we design knowledge representation and developed a natural language understanding unit.2. Development of a method for understanding sentences including wrong expressionWe developed an intelligent unit classifying wrong sentences by whether the sentence includes any syntactic mistakes or not, and by whether the sentence can be matched to the context of conversation. Based on this classification, our system can generate adoptive message for each learners.3. Design and implementation of teaching strategiesWe designed a set of teaching strategies for training of novice Japanese dialogue. If a learner input some wrong sentences, the system should consider whether it should point out the learner's mistakes soon, or it should continue dialogue. We adopt a pedagogical method called "Focus on Form" and develop a unit of detecting a certain pattern of words called "Form" from input sentences, in order to realize conversation based on "Focus on Form".4. Development of an authoring toolWe developed an authoring tool that generates "Situation knowledge" which represents the situation of current conversation, based on natural language sentences representing the situation.5. Construction of a training system and evaluation of itWe develop a training system for novice Japanese conversation and evaluate the system by testing how well it can detect mistakes included in novice Japanese learners' typical wrong sentences.6. PublicationWe publish a technical report on the result of this research.