ECOL-R: Encouraging Copying in Novel Object Captioning with Reinforcement Learning Yufei Wang author Ian Wood author Stephen Wan author Mark Johnson author 2021-04 text Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume Paola Merlo editor Jorg Tiedemann editor Reut Tsarfaty editor Association for Computational Linguistics Online conference publication wang-etal-2021-ecol 10.18653/v1/2021.eacl-main.104 https://aclanthology.org/2021.eacl-main.104/ 2021-04 1222 1234