论文标题

协会规则增强知识图表网络

Association Rules Enhanced Knowledge Graph Attention Network

论文作者

Zhang, Zhenghao, Huang, Jianbin, Tan, Qinglin

论文摘要

大多数现有的知识图都遭受不完整的影响。将知识图嵌入到连续的矢量空间中,最近引起了人们对知识基础完成的兴趣。但是,在大多数现有的嵌入方法中,仅利用事实三重态,并且尚未对知识库完成任务进行彻底研究。为了克服问题,我们建议协会规则增强知识图表网络(AR-KGAT)。 AR-KGAT在图形注意力网络框架下以端到端方式捕获了任何给定实体的高阶社区的实体和关系特征。 AR-KGAT的主要组成部分是有效的邻域聚合器的编码器,该组合者通过将基于关联符号和基于图的注意力的邻居聚集到邻居来解决这些问题。此外,提出的模型还封装了节点多跳邻邻居的表示形式,以完善其嵌入。解码器使AR-KGAT能够在实体和关系之间转化,同时保持较高的链接预测性能。类似逻辑的推理模式被用作知识图嵌入的约束。然后,在原子和复杂公式中均可最大程度地减少全球损失,以实现嵌入任务。通过这种方式,我们学习与三胞胎和规则兼容的嵌入,这无疑可以预测知识获取和推论。我们在两个基准数据集上进行了广泛的实验:WN18RR和FB15K-237,对于两个知识图完成任务:链接预测和三重态分类,以评估所提出的AR-KGAT模型。结果表明,所提出的AR-KGAT模型对最新方法实现了显着和一致的改进。

Most existing knowledge graphs suffer from incompleteness. Embedding knowledge graphs into continuous vector spaces has recently attracted increasing interest in knowledge base completion. However, in most existing embedding methods, only fact triplets are utilized, and logical rules have not been thoroughly studied for the knowledge base completion task. To overcome the problem, we propose an association rules enhanced knowledge graph attention network (AR-KGAT). The AR-KGAT captures both entity and relation features for high-order neighborhoods of any given entity in an end-to-end manner under the graph attention network framework. The major component of AR-KGAT is an encoder of an effective neighborhood aggregator, which addresses the problems by aggregating neighbors with both association-rules-based and graph-based attention weights. Additionally, the proposed model also encapsulates the representations from multi-hop neighbors of nodes to refine their embeddings. The decoder enables AR-KGAT to be translational between entities and relations while keeping the superior link prediction performance. A logic-like inference pattern is utilized as constraints for knowledge graph embedding. Then, the global loss is minimized over both atomic and complex formulas to achieve the embedding task. In this manner, we learn embeddings compatible with triplets and rules, which are certainly more predictive for knowledge acquisition and inference. We conduct extensive experiments on two benchmark datasets: WN18RR and FB15k-237, for two knowledge graph completion tasks: the link prediction and triplet classification to evaluate the proposed AR-KGAT model. The results show that the proposed AR-KGAT model achieves significant and consistent improvements over state-of-the-art methods.

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