MedAI at SemEval-2021 Task 10: Negation-aware Pre-training for Source-free Negation Detection Domain Adaptation Jinquan Sun author Qi Zhang author Yu Wang author Lei Zhang author 2021-08 text Proceedings of the 15th International Workshop on Semantic Evaluation (SemEval-2021) Alexis Palmer editor Nathan Schneider editor Natalie Schluter editor Guy Emerson editor Aurelie Herbelot editor Xiaodan Zhu editor Association for Computational Linguistics Online conference publication sun-etal-2021-medai 10.18653/v1/2021.semeval-1.183 https://aclanthology.org/2021.semeval-1.183/ 2021-08 1283 1288