Abstract
Knowledge-aware recommendation has attracted increasing attention due to its wide application in alleviating data-sparse and cold-start, but the real-world knowledge graph (KG) contains many noises from irrelevant entities. Recently, contrastive learning, a self-supervised learning (SSL) method, has shown excellent anti-noise performance in recommendation task. However, the inconsistency between the use of noisy embeddings in SSL tasks and the original embeddings in recommendation tasks limits the model’s ability.
We propose a Multi-view Contrastive learning for Knowledge-aware Recommendation framework (MCKR) to solve the above problems. To remove inconsistencies, MCKR unifies the input of SSL and recommendation tasks and learns more representations from the contrastive learning method. To alleviate the noises from irrelevant entities, MCKR preprocesses the KG triples according to the type and randomly perturbs of graph structure with different weights. Then, a novel distance-based graph convolutional network is proposed to learn more reliable entity information in KG. Extensive experiments on three popular benchmark datasets present that our approach achieves state-of-the-art. Further analysis shows that MCKR also performs well in reducing data noise.
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Notes
- 1.
See an empirical study in Sect. 5.3.
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Acknowledgments
This work is jointly supported by National Natural Science Foundation of China (61877043) and National Natural Science of China (61877044).
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Yu, R., Li, Z., Zhao, M., Zhang, W., Yang, M., Yu, J. (2024). Multi-view Contrastive Learning for Knowledge-Aware Recommendation. In: Luo, B., Cheng, L., Wu, ZG., Li, H., Li, C. (eds) Neural Information Processing. ICONIP 2023. Lecture Notes in Computer Science, vol 14451. Springer, Singapore. https://doi.org/10.1007/978-981-99-8073-4_17
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