Using active learning to expand training data for implicit discourse relation recognition Yang Xu author Yu Hong author Huibin Ruan author Jianmin Yao author Min Zhang author Guodong Zhou author 2018-oct-nov text Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing Ellen Riloff editor David Chiang editor Julia Hockenmaier editor Jun’ichi Tsujii editor Association for Computational Linguistics Brussels, Belgium conference publication xu-etal-2018-using 10.18653/v1/D18-1079 https://aclanthology.org/D18-1079/ 2018-oct-nov 725 731