Frustratingly Easy Model Ensemble for Abstractive Summarization Hayato Kobayashi 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 kobayashi-2018-frustratingly 10.18653/v1/D18-1449 https://aclanthology.org/D18-1449/ 2018-oct-nov 4165 4176