Enhancing Knowledge Selection via Multi-level Document Semantic Graph Haoran Zhang author Tan Yongmei author 2024-05 text Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024) Nicoletta Calzolari editor Min-Yen Kan editor Veronique Hoste editor Alessandro Lenci editor Sakriani Sakti editor Nianwen Xue editor ELRA and ICCL Torino, Italia conference publication zhang-yongmei-2024-enhancing https://aclanthology.org/2024.lrec-main.531/ 2024-05 5996 6006