CAST: Enhancing Code Summarization with Hierarchical Splitting and Reconstruction of Abstract Syntax Trees Ensheng Shi author Yanlin Wang author Lun Du author Hongyu Zhang author Shi Han author Dongmei Zhang author Hongbin Sun 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 shi-etal-2021-cast 10.18653/v1/2021.emnlp-main.332 https://aclanthology.org/2021.emnlp-main.332/ 2021-11 4053 4062