@inproceedings{niu-etal-2026-chartreg, title = "{C}hart{REG}++: Benchmarking and Improving Chart Referring Expression Grounding under Diverse referring clues and Multi-Target Referring", author = "Niu, Tianhao and Han, Ziyu and Dong, Xuan and Zhu, Qingfu and Che, Wanxiang", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.1485/", pages = "33945--33969", ISBN = "979-8-89176-459-0" }