STANKER: Stacking Network based on Level-grained Attention-masked BERT for Rumor Detection on Social Media Dongning Rao author Xin Miao author Zhihua Jiang author Ran Li 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 rao-etal-2021-stanker 10.18653/v1/2021.emnlp-main.269 https://aclanthology.org/2021.emnlp-main.269/ 2021-11 3347 3363