Attribute-Aware Graph Aggregation for Sequential Recommendation

Yiming Qu, Yang Fang (), Zhen Tan and Weidong Xiao
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Yiming Qu: National Key Laboratory of Information Systems Engineering Laboratory, National University of Defense Technology, Changsha 410073, China
Yang Fang: College of Systems Engineering, National University of Defense Technology, Changsha 410073, China
Zhen Tan: National Key Laboratory of Information Systems Engineering Laboratory, National University of Defense Technology, Changsha 410073, China
Weidong Xiao: National Key Laboratory of Information Systems Engineering Laboratory, National University of Defense Technology, Changsha 410073, China

Mathematics, 2025, vol. 13, issue 9, 1-13

Abstract: In this paper, we address the challenge of dynamic evolution of user preferences and propose an attribute-sequence-based recommendation model to improve the accuracy and interpretability of recommendation systems. Traditional approaches usually rely on item sequences to model user behavior, but ignore the potential value of attributes shared among different items for preference characterization. To this end, this paper innovatively replaces items in user interaction sequences with attributes, constructs attribute sequences to capture fine-grained preference changes, and reinforces the prioritization of current interests by maintaining the latest state of attributes. Meanwhile, the item–attribute relationship is modeled using LightGCN and a variant of GAT, fusing multi-level features using gated attention mechanism, and introducing rotary encoding to enhance the flexibility of sequence modeling. Experiments on four real datasets (Beauty, Video Games, Men, and Fashion) showed that the model in this paper significantly outperformed the benchmark model in both NDCG@10 and Hit Ratio@10 metrics, with a highest improvement of 6.435% and 3.613%, respectively. The ablation experiments further validated the key role of attribute aggregation and sequence modeling in capturing user preference dynamics. This work provides a new concept for recommender systems that balances fine-grained preference evolution with efficient sequence modeling.

Keywords: recommender system; sequential recommendation; item–attribute graph embedding (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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