RIVA: A Pre-trained Tweet Multimodal Model Based on Text-image Relation for Multimodal NER Lin Sun author Jiquan Wang author Yindu Su author Fangsheng Weng author Yuxuan Sun author Zengwei Zheng author Yuanyi Chen author 2020-12 text Proceedings of the 28th International Conference on Computational Linguistics Donia Scott editor Nuria Bel editor Chengqing Zong editor International Committee on Computational Linguistics Barcelona, Spain (Online) conference publication sun-etal-2020-riva 10.18653/v1/2020.coling-main.168 https://aclanthology.org/2020.coling-main.168/ 2020-12 1852 1862