MAST: Multimodal Abstractive Summarization with Trimodal Hierarchical Attention Aman Khullar author Udit Arora author 2020-11 text Proceedings of the First International Workshop on Natural Language Processing Beyond Text Giuseppe Castellucci editor Simone Filice editor Soujanya Poria editor Erik Cambria editor Lucia Specia editor Association for Computational Linguistics Online conference publication khullar-arora-2020-mast 10.18653/v1/2020.nlpbt-1.7 https://aclanthology.org/2020.nlpbt-1.7/ 2020-11 60 69