Design and evaluation of example-deriving knowledge base system for Japanese polite expressions learning

It is difficult for overseas students to learn Japanese polite expressions because polite expressions change in complicated way according to the situation (personal relationships and the conversation scenes). Moreover, personal relationships in Japan often vary from that in a learner's country. This difference mg result in misunderstanding for the overseas students. Therefore it is important for the learners to team the personal relationships and to use polite expressions properly accordingly. We implemented a knowledge base system for Japanese polite expression learning, which is called JEDY. The outline and the evaluation of Jedy are described in the paper.