A System Assisting Acquisition of Japanese Expressions Through Read-Write-Hear-Speaking and Comparing Between Use Cases of Relevant Expressions

摘要

We are developing a system aiming at supporting learners acquiring the ability of using expressions of Japanese as 2nd language. The system assists the author to develop a collection of expression notes edited and annotated to their locations in structured texts. The authored system assists the learners to retrieve and compare usage of the expressions. Based on the experience of an evaluation experiment, a collection of prototype expression notes and an expression relational map were introduced in order to facilitate authoring and learning by comparison of usage of the same or related expressions. We then describe the subsystem for diagnosing sentence-wise blank-filling composition and its authoring system, constructed using a lexicalized grammar with feedback of giving use cases of the erroneously used expressions. Finally we report on the phonetic assistance with visualized prosody in pitch and pause being synchronized with progression of the spoken moras of the voice of the authentic speaker as well as of the learner using a speech recognition engine.