Concept-Based Label Embedding via Dynamic Routing for Hierarchical Text Classification

Xuepeng Wang, Li Zhao, Bing Liu, Tao Chen, Feng Zhang, Di Wang


Abstract
Hierarchical Text Classification (HTC) is a challenging task that categorizes a textual description within a taxonomic hierarchy. Most of the existing methods focus on modeling the text. Recently, researchers attempt to model the class representations with some resources (e.g., external dictionaries). However, the concept shared among classes which is a kind of domain-specific and fine-grained information has been ignored in previous work. In this paper, we propose a novel concept-based label embedding method that can explicitly represent the concept and model the sharing mechanism among classes for the hierarchical text classification. Experimental results on two widely used datasets prove that the proposed model outperforms several state-of-the-art methods. We release our complementary resources (concepts and definitions of classes) for these two datasets to benefit the research on HTC.
Anthology ID:
2021.acl-long.388
Volume:
Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers)
Month:
August
Year:
2021
Address:
Online
Editors:
Chengqing Zong, Fei Xia, Wenjie Li, Roberto Navigli
Venues:
ACL | IJCNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
5010–5019
Language:
URL:
https://aclanthology.org/2021.acl-long.388
DOI:
10.18653/v1/2021.acl-long.388
Bibkey:
Cite (ACL):
Xuepeng Wang, Li Zhao, Bing Liu, Tao Chen, Feng Zhang, and Di Wang. 2021. Concept-Based Label Embedding via Dynamic Routing for Hierarchical Text Classification. In Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers), pages 5010–5019, Online. Association for Computational Linguistics.
Cite (Informal):
Concept-Based Label Embedding via Dynamic Routing for Hierarchical Text Classification (Wang et al., ACL-IJCNLP 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.acl-long.388.pdf
Video:
 https://aclanthology.org/2021.acl-long.388.mp4
Code
 wxpkanon/cledforhtc
Data
WOS