Improving Multimodal Named Entity Recognition via Entity Span Detection with Unified Multimodal Transformer Jianfei Yu author Jing Jiang author Li Yang author Rui Xia author 2020-07 text Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics Dan Jurafsky editor Joyce Chai editor Natalie Schluter editor Joel Tetreault editor Association for Computational Linguistics Online conference publication yu-etal-2020-improving-multimodal 10.18653/v1/2020.acl-main.306 https://aclanthology.org/2020.acl-main.306/ 2020-07 3342 3352