Design of a Learner Corpus for Listening and Speaking Performance Katsunori Kotani author Takehiko Yoshimi author 2015-10 text Proceedings of the 29th Pacific Asia Conference on Language, Information and Computation Hai Zhao editor Shanghai, China conference publication kotani-yoshimi-2015-design https://aclanthology.org/Y15-1040/ 2015-10 351 358