BiInfGCN: Bilateral Information Augmentation of Graph Convolutional Networks for Recommendation

Jingfeng Guo, Chao Zheng (), Shanshan Li, Yutong Jia and Bin Liu
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Jingfeng Guo: College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China
Chao Zheng: Big Data and Social Computing Research Center, Hebei University of Science and Technology, Shijiazhuang 050018, China
Shanshan Li: College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China
Yutong Jia: College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China
Bin Liu: Big Data and Social Computing Research Center, Hebei University of Science and Technology, Shijiazhuang 050018, China

Mathematics, 2022, vol. 10, issue 17, 1-16

Abstract: The current graph-neural-network-based recommendation algorithm fully considers the interaction between users and items. It achieves better recommendation results, but due to a large amount of data, the interaction between users and items still suffers from the problem of data sparsity. To address this problem, we propose a method to alleviate the data sparsity problem by retaining user–item interactions while fully exploiting the association relationships between items and using side-information enhancement. We constructed a “twin-tower” model by combining a user–item training model and an item–item training model inspired by the knowledge distillation technique; the two sides of the structure learn from each other during the model training process. Comparative experiments were carried out on three publicly available datasets, using the recall and the normalized discounted cumulative gain as evaluation metrics; the results outperform existing related base algorithms. We also carried out extensive parameter sensitivity and ablation experiments to analyze the influence of various factors on the model. The problem of user–item interaction data sparsity is effectively addressed.

Keywords: recommended system; graphical convolutional neural networks; deep learning; knowledge distillation; personalized recommendations (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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