动态行为建模+多视角融合,提升教育推荐精准度
Multi-view Attention Fusion of Heterogeneous Hypergraph with Dynamic Behavioral Profiling for Personalized Learning Resource Recommendation
- 构建异构超图并动态捕捉学习行为演化过程
- 在5个公开数据集和1个真实数据集上超越基线方法
- 适合教育推荐系统研发者与个性化学习平台设计者
超图能捕捉学习者与学习资源间的复杂高阶依赖关系。现有基于超图的推荐方法常忽略学习过程的动态性,且对超图中多维度(即多视图)的互补信息利用不足,导致表征区分度和泛化能力下降,尤其在教育场景数据稀疏时更明显。本文提出统一模型,包含动态行为建模模块与多视图注意力融合模块,基于异构超图构建。动态行为建模模块捕捉行为演化过程,推断关键的潜在高阶关系以完成超图;多视图融合模块整合不同关系视图的信息,丰富整体表征。在五个公开基准数据集和一个自建真实数据集上系统评估,结果表明该模型在多数指标上优于基线方法;基于动态行为建模的超图补全显著提升性能,但效果受数据集特性影响。此外,我们开发了面向研究生文献推荐的功能原型系统,并开展混合方法用户研究。定量分析显示推荐质量感知显著更高;定性反馈表明用户参与度和满意度明显提升。
原文摘要 · Abstract (English)
Hypergraph can capture complex and higher-order dependencies among learners and learning resources in personalized educational recommender systems. Many existing hypergraph-based recommendation approaches underexplored the dynamic behavioral processes inherent to learning and often oversimplified the complementary information embedded across multiple dimensions (i.e. views) within hypergraphs. These limitations compromise both the distinctiveness of learned representations and the model's generalization capabilities, especially under data-sparse conditions typical in educational settings. In this study, we propose a unified model comprising a dynamic behavioral profiling module and a multi-view attention fusion module based on heterogeneous hypergraph construction. The dynamic behavioral profiling module is designed to capture evolving behavioral processes and infer latent higher-order relations crucial for hypergraph completion; The multi-view fusion module cohesively integrates information from distinct relational views, enriching the overall data representation. The proposed model was systematically evaluated on five public benchmark datasets and one real-world, self-constructed dataset. Experimental results demonstrate that the model outperforms baseline methods across most datasets in key metrics; Furthermore, hypergraph completion based on dynamic behavioral profiling contributes significantly to performance gains, though its efficacy is modulated by dataset characteristics. Beyond offline experiments, we implemented a functional prototype system tailored for postgraduate student literature recommendation. A mixed-methods user study was conducted to assess its practical utility. Quantitative analysis revealed significantly higher perceived recommendation quality; Qualitative feedback highlighted enhanced user engagement and satisfaction with the prototype system.
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