Adaptive Long-term Embedding with Denoising and Augmentation for Recommendation

The rapid growth of the internet has made personalized recommendation systems indispensable. Graph-based sequential recommendation systems, powered by Graph Neural Networks (GNNs), effectively capture complex user-item interactions but often face challenges such as noise and static representations. In this paper, we introduce the Adaptive Long-term Embedding with Denoising and Augmentation for Recommendation (ALDA4Rec) method, a novel model that constructs an item-item graph, filters noise through community detection, and enriches user-item interactions. Graph Convolutional Networks (GCNs) are then employed to learn short-term representations, while averaging, GRUs, and attention mechanisms are utilized to model long-term embeddings. An MLP-based adaptive weighting strategy is further incorporated to dynamically optimize long-term user preferences. Experiments conducted on four real-world datasets demonstrate that ALDA4Rec outperforms state-of-the-art baselines, delivering notable improvements in both accuracy and robustness. The source code is available atthis https URL.

@article{akhlaghi2025_2504.13614,
  title={ Adaptive Long-term Embedding with Denoising and Augmentation for Recommendation },
  author={ Zahra Akhlaghi and Mostafa Haghir Chehreghani },
  journal={arXiv preprint arXiv:2504.13614},
  year={ 2025 }
}