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Towards Efficient Hypergraph Representation Learning for Multi-Behaviour Recommender Systems

Mukande, Tendai orcid logoORCID: 0000-0002-0654-7141, Ali, Esraa orcid logoORCID: 0000-0003-1600-3161, Caputo, Annalina orcid logoORCID: 0000-0002-7144-8545, Dong, Ruihai orcid logoORCID: 0000-0002-2509-1370 and O'Connor, Noel orcid logoORCID: 0000-0002-4033-9135 (2025) Towards Efficient Hypergraph Representation Learning for Multi-Behaviour Recommender Systems. In: WWW '25: The ACM Web Conference 2025, 28 April - 02 May 2025, Sydney NSW Australia. ISBN 9798400713316

Abstract
Recommender systems (RSs) are essential for the modern web, providing personalized suggestions that alleviate information overload and enhance the user experience across various platforms. Graph neural networks (GNNs) have been proposed for RS and demonstrate significant potential. However, GNN-based methods are prone to oversmoothing in practical settings, limiting their expressive power and ability to capture complex data patterns effectively. Recent research has also explored graph-transformer-based RS methods that, while improving performance, tend to increase computational costs, particularly in large-scale scenarios. To address these challenges, we introduce FAHMRec, an efficient hypergraph-based model for multi-behaviour recommendation. Experimental results demonstrate that our method outperforms state-of-the-art baselines in recommendation quality while also reducing memory and time costs.
Metadata
Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:Yes
Uncontrolled Keywords:Transformer; Multi-Behaviour Recommender System; MLP Hypergraph; Graph Neural Network; Computational Efficiency
Subjects:Computer Science > Artificial intelligence
Computer Science > Machine learning
Computer Science > World Wide Web
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing
DCU Faculties and Schools > Faculty of Engineering and Computing > School of Computing
Published in: Proceedings of the ACM on Web Conference 2025. . ACM. ISBN 9798400713316
Publisher:ACM
Official URL:https://dl.acm.org/doi/proceedings/10.1145/3696410
Copyright Information:Authors
Funders:Research Ireland ML-LABS - Grant number 18/CRT/6183
ID Code:32645
Deposited On:18 May 2026 09:42 by Tendai Mukande . Last Modified 18 May 2026 09:42
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