SKD-NER: Continual Named Entity Recognition via Span-based Knowledge Distillation with Reinforcement Learning Yi Chen author Liang He author 2023-12 text Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication chen-he-2023-skd 10.18653/v1/2023.emnlp-main.413 https://aclanthology.org/2023.emnlp-main.413/ 2023-12 6689 6700