HILL: Hierarchy-aware Information Lossless Contrastive Learning for Hierarchical Text Classification He Zhu author Junran Wu author Ruomei Liu author Yue Hou author Ze Yuan author Shangzhe Li author Yicheng Pan author Ke Xu author 2024-06 text Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers) Kevin Duh editor Helena Gomez editor Steven Bethard editor Association for Computational Linguistics Mexico City, Mexico conference publication zhu-etal-2024-hill 10.18653/v1/2024.naacl-long.265 https://aclanthology.org/2024.naacl-long.265/ 2024-06 4731 4745