journal article Jul 10, 2025

Denoising Heterogeneous Graph Pre-training Framework for Recommendation

Abstract
Heterogeneous graph neural networks (HGNN)
have exhibited significant performance gains by modeling the information propagation process in graph-structured data for recommender systems. However, existing HGNN-based Recommendation still face two challenges: (1) They overlook the rich semantics brought by the combination of different meta-paths, making it difficult to capture the importance of various meta-paths; (2) when HGNN use meta-paths to capture high-order information, they are susceptible to noise data, as noise from connected nodes can create cumulative effects on a target node in the graph. To tackle these issues, we propose a new model called the
Denoising Heterogeneous Graph Pre-training Framework (DHGPF)
to enhance recommendation tasks. This framework has two stages: pre-training and training. In the pre-training stage, we assign learnable weights to different meta-paths and use a simplified multi-layer graph convolution network to automatically aggregate semantic information from different meta-path combinations. This approach can capture the importance of these paths. The training stage focuses on reducing noise using gating mechanism and denoising structure learning methods. These methods accomplish the denoising process through information filtering. Our model was evaluated on three real-world datasets, demonstrating that DHGPF outperforms other state-of-the-art recommendation methods. We have further organized the source code of the article at
https://github.com/wangyu0627/DHGPF
.
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Details
Published
Jul 10, 2025
Vol/Issue
43(5)
Pages
1-31
Funding
National Natural Science Foundation of China Award: 62206002, 62206004,and 62272001
Hefei Key Common Technology Project Award: 2023SGJ014
Xunfei Zhiyuan Digital Transformation Innovation Research Special for Universities Award: 2023ZY001
Cite This Article
Lei Sang, Yiwen Zhang, Xindong Wu (2025). Denoising Heterogeneous Graph Pre-training Framework for Recommendation. ACM Transactions on Information Systems, 43(5), 1-31. https://doi.org/10.1145/3706632
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