作者
Yong Liu, Susen Yang, Yonghui Xu, Chunyan Miao, Min Wu, Juyong Zhang
发表日期
2021/5/24
期刊
IEEE Transactions on knowledge and data engineering
卷号
35
期号
1
页码范围
181-195
出版商
IEEE
简介
Graph neural networks (GNN) have recently been applied to exploit knowledge graph (KG) for recommendation. Existing GNN-based methods explicitly model the dependency between an entity and its local graph context in KG (i.e., the set of its first-order neighbors), but may not be effective in capturing its non-local graph context (i.e., the set of most related high-order neighbors). In this paper, we propose a novel recommendation framework, named Contextualized Graph Attention Network (CGAT), which can explicitly exploit both local and non-local graph context information of an entity in KG. More specifically, CGAT captures the local context information by a user-specific graph attention mechanism, considering a user’s personalized preferences on entities. In addition, CGAT employs a biased random walk sampling process to extract the non-local context of an entity, and utilizes a Recurrent Neural Network …
引用总数
学术搜索中的文章
Y Liu, S Yang, Y Xu, C Miao, M Wu, J Zhang - IEEE Transactions on knowledge and data engineering, 2021