通过挖掘属性图规则提升推荐效果,解决信息缺失问题。
RAE: A Rule-Driven Approach for Attribute Embedding in Property Graph Recommendation
- 用规则引导随机游走生成更丰富的属性嵌入
- 在真实数据集上召回率与NDCG平均提升10.6%
- 适合处理稀疏数据和属性缺失的推荐场景
推荐系统在现代应用中至关重要,能通过个性化提升用户体验和商业转化率。然而,现有方法对属性图中的属性信息利用不足:多数图卷积网络(GCN)模型忽略属性信息,少数模型虽引入但仅采用简化三元组格式<用户, 项目, 属性>,未能充分挖掘属性图的语义结构。为此,我们提出规则驱动的属性嵌入方法(RAE),通过规则挖掘提取有意义的语义规则,指导随机游走生成增强型属性嵌入,并将其融入GCN模型。在真实数据集(如Blogcatalog和Flickr)上的实验表明,与最先进基线相比,RAE在Recall@20和NDCG@20上平均提升10.6%,显著改善了前20名推荐的相关性覆盖与排序合理性。此外,RAE对数据稀疏性和属性缺失具有更强鲁棒性。本方法证明,充分挖掘属性图中的属性信息可显著提升推荐系统的有效性与可靠性。
原文摘要 · Abstract (English)
Recommendation systems are crucial in modern applications to enhance the user experience and drive business conversion rates through personalization. However, insufficient utilization of attribute information within the property graph remains a significant challenge. Most existing graph convolutional network (GCN) models do not consider attribute information, and those that do often employ a simplified triple format <users, items, attributes>, which fails to fully exploit the rich semantic structures of property graphs necessary for effective recommendations. To overcome these limitations, we introduce Rule-Driven Approach for Attribute Embedding (RAE), a novel methodology that enhances recommendation performance by effectively mining and utilizing semantic rules from property graphs. RAE applies a rule-mining process to extract meaningful rules that guide random walks in generating enriched attribute embeddings. These enriched embeddings are subsequently integrated into GCNs, surpassing conventional triple-based embedding techniques. We evaluate RAE on real-world datasets (e.g., Blogcatalog and Flickr) and demonstrate that RAE achieves an average improvement of 10.6% in both Recall@20 and NDCG@20 compared to state-of-the-art baselines, indicating superior relevance coverage and ranking rationality in top-20 recommendations. Additionally, RAE exhibits enhanced robustness against data sparsity and the attribute missingness problem. Our novel approach underscores the significant performance gains achieved in recommendation systems by fully leveraging attribute information within property graphs, enhancing both effectiveness and reliability.
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