Pu, Ruili, et al. “A Joint Framework With Heterogeneous-Relation-Aware Graph and Multi-Channel Label Enhancing Strategy for Event Causality Extraction”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 38, no. 17, Mar. 2024, pp. 18879-87, doi:10.1609/aaai.v38i17.29853.