The Stem Cell Hypothesis: Dilemma behind Multi-Task Learning with Transformer Encoders Han He author Jinho D Choi author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication he-choi-2021-stem 10.18653/v1/2021.emnlp-main.451 https://aclanthology.org/2021.emnlp-main.451/ 2021-11 5555 5577