Learning a Policy for Opportunistic Active Learning Aishwarya Padmakumar author Peter Stone author Raymond Mooney 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 padmakumar-etal-2018-learning 10.18653/v1/D18-1165 https://aclanthology.org/D18-1165/ 2018-oct-nov 1347 1357