Hu, Anwen, Zhicheng Dou, Jian-Yun Nie, and Ji-Rong Wen. 2020. “Leveraging Multi-Token Entities in Document-Level Named Entity Recognition”. Proceedings of the AAAI Conference on Artificial Intelligence 34 (05):7961-68. https://doi.org/10.1609/aaai.v34i05.6304.