CoVariance-based Causal Debiasing for Entity and Relation Extraction Lin Ren author Yongbin Liu author Yixin Cao author Chunping Ouyang author 2023-12 text Findings of the Association for Computational Linguistics: EMNLP 2023 Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication ren-etal-2023-covariance 10.18653/v1/2023.findings-emnlp.173 https://aclanthology.org/2023.findings-emnlp.173/ 2023-12 2627 2640