Multi-Modal Hypergraph Enhanced LLM Learning for Recommendation

• URL: http://arxiv.org/abs/2504.10541v1
• Date: Sun, 13 Apr 2025 09:12:35 GMT
• Title: Multi-Modal Hypergraph Enhanced LLM Learning for Recommendation
• Authors: Xu Guo, Tong Zhang, Yuanzhi Wang, Chenxu Wang, Fuyun Wang, Xudong Wang, Xiaoya Zhang, Xin Liu, Zhen Cui,
• Abstract summary: We propose a novel framework, Hypergraph Enhanced LLM Learning for multimodal Recommendation (HeLLM)<n>We equip LLMs with the capability to capture intricate higher-order semantic correlations by fusing graph-level contextual signals with sequence-level behavioral patterns.<n>In the recommender pre-training phase, we design a user hypergraph to uncover shared interest preferences among users.<n>The hypergraph convolution and synergistic contrastive learning mechanism are introduced to enhance the distinguishability of learned representations.
• Score: 27.583326184212194
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The burgeoning presence of Large Language Models (LLM) is propelling the development of personalized recommender systems. Most existing LLM-based methods fail to sufficiently explore the multi-view graph structure correlations inherent in recommendation scenarios. To this end, we propose a novel framework, Hypergraph Enhanced LLM Learning for multimodal Recommendation (HeLLM), designed to equip LLMs with the capability to capture intricate higher-order semantic correlations by fusing graph-level contextual signals with sequence-level behavioral patterns. In the recommender pre-training phase, we design a user hypergraph to uncover shared interest preferences among users and an item hypergraph to capture correlations within multimodal similarities among items. The hypergraph convolution and synergistic contrastive learning mechanism are introduced to enhance the distinguishability of learned representations. In the LLM fine-tuning phase, we inject the learned graph-structured embeddings directly into the LLM's architecture and integrate sequential features capturing each user's chronological behavior. This process enables hypergraphs to leverage graph-structured information as global context, enhancing the LLM's ability to perceive complex relational patterns and integrate multimodal information, while also modeling local temporal dynamics. Extensive experiments demonstrate the superiority of our proposed method over state-of-the-art baselines, confirming the advantages of fusing hypergraph-based context with sequential user behavior in LLMs for recommendation.

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