Long Document Ranking with Query-Directed Sparse Transformer Jyun-Yu Jiang author Chenyan Xiong author Chia-Jung Lee author Wei Wang author 2020-11 text Findings of the Association for Computational Linguistics: EMNLP 2020 Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication jiang-etal-2020-long 10.18653/v1/2020.findings-emnlp.412 https://aclanthology.org/2020.findings-emnlp.412/ 2020-11 4594 4605