YEDDA: A Lightweight Collaborative Text Span Annotation Tool Jie Yang author Yue Zhang author Linwei Li author Xingxuan Li author 2018-07 text Proceedings of ACL 2018, System Demonstrations Fei Liu editor Thamar Solorio editor Association for Computational Linguistics Melbourne, Australia conference publication yang-etal-2018-yedda 10.18653/v1/P18-4006 https://aclanthology.org/P18-4006/ 2018-07 31 36