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

1. 自然语言理解单元的发展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。根据结果，设计了知识表示，开发了自然语言理解单元。开发一种理解包含错误表达的句子的方法我们开发了一个智能单元，根据句子是否包含任何语法错误以及句子是否与对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自适应的信息。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。如果学习者输入了一些错误的句子，系统应该考虑是应该尽快指出学习者的错误，还是应该继续对话。3 .我们采用“注重形式”的教学方法，开发了从输入的句子中检测某种“形式”的单词模式的单元，以实现基于“注重形式”的对话。创作工具的开发我们开发了一个创作工具，可以生成代表当前对话情境的“情境知识”，基于代表情境的自然语言句子。我们开发了一个日语初学者会话训练系统，并通过测试该系统对日语初学者典型错误句子的识别能力来评估该系统。我们发表了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.