Line Graphs Are Here! Unlock a Simple Solution for Data Sparsity and Class Imbalance in Recommender System.

@inproceedings{zhou-2026-line, author = {Junming Zhou and Hao Zhong and Shupeng Li and Zhengyang Wu and Yong Tang and Ronghua Lin}, editor = {Hakim Hacid and Yoelle Maarek and Francesco Bonchi and Ido Guy and Emine Yilmaz}, title = {{Line Graphs Are Here! Unlock a Simple Solution for Data Sparsity and Class Imbalance in Recommender System}}, booktitle = {{Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026}}, pages = {6194--6205}, publisher = {ACM}, year = {2026}, url = {https://doi.org/10.1145/3774904.3792292}, doi = {https://doi.org/10.1145/3774904.3792292} }