Graph Neural News Recommendation with Unsupervised Preference Disentanglement

Linmei Hu, Siyong Xu, Chen Li, Cheng Yang, Chuan Shi, Nan Duan, Xing Xie, Ming Zhou


Abstract
With the explosion of news information, personalized news recommendation has become very important for users to quickly find their interested contents. Most existing methods usually learn the representations of users and news from news contents for recommendation. However, they seldom consider high-order connectivity underlying the user-news interactions. Moreover, existing methods failed to disentangle a user’s latent preference factors which cause her clicks on different news. In this paper, we model the user-news interactions as a bipartite graph and propose a novel Graph Neural News Recommendation model with Unsupervised Preference Disentanglement, named GNUD. Our model can encode high-order relationships into user and news representations by information propagation along the graph. Furthermore, the learned representations are disentangled with latent preference factors by a neighborhood routing algorithm, which can enhance expressiveness and interpretability. A preference regularizer is also designed to force each disentangled subspace to independently reflect an isolated preference, improving the quality of the disentangled representations. Experimental results on real-world news datasets demonstrate that our proposed model can effectively improve the performance of news recommendation and outperform state-of-the-art news recommendation methods.
Anthology ID:
2020.acl-main.392
Volume:
Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics
Month:
July
Year:
2020
Address:
Online
Editors:
Dan Jurafsky, Joyce Chai, Natalie Schluter, Joel Tetreault
Venue:
ACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4255–4264
Language:
URL:
https://aclanthology.org/2020.acl-main.392
DOI:
10.18653/v1/2020.acl-main.392
Bibkey:
Cite (ACL):
Linmei Hu, Siyong Xu, Chen Li, Cheng Yang, Chuan Shi, Nan Duan, Xing Xie, and Ming Zhou. 2020. Graph Neural News Recommendation with Unsupervised Preference Disentanglement. In Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, pages 4255–4264, Online. Association for Computational Linguistics.
Cite (Informal):
Graph Neural News Recommendation with Unsupervised Preference Disentanglement (Hu et al., ACL 2020)
Copy Citation:
PDF:
https://aclanthology.org/2020.acl-main.392.pdf
Video:
 http://slideslive.com/38928712
Code
 siyongxu/GNUD
Data
Adressa