论文标题

知识图推理的联合语义和数据驱动的路径表示

Joint Semantics and Data-Driven Path Representation for Knowledge Graph Inference

论文作者

Niu, Guanglin, Li, Bo, Zhang, Yongfei, Sheng, Yongpan, Shi, Chuan, Li, Jingyang, Pu, Shiliang

论文摘要

大规模知识图(kg)的推断对于诸如问答诸如kg应用程序之类的应用非常重要。基于路径的推理模型可以利用大量的信息在kg中的纯三元三元中以外的路径,这面临几个挑战:所有现有的基于路径的方法都是数据驱动的,缺乏路径表示的解释性。此外,某些方法要么仅考虑关系路径,要么忽略了实体和关系之间包含在路径中的异质性,这些路径无法很好地捕获路径的丰富语义。为了应对上述挑战,在这项工作中,我们提出了一种新颖的联合语义和数据驱动的路径表示,该语言在KG嵌入框架中平衡了解释性和泛化。更具体地说,我们通过透明且可解释的路径组成程序注入喇叭规则,以获得凝结的路径。实体转换器旨在将沿路径的实体转换为语义层面中的表示形式,类似于降低实体与关系之间的异质性的关系,其中考虑了具有和没有类型信息的KGS。我们提出的模型对两类任务进行了评估:链接预测和路径查询答案任务。实验结果表明,与几个不同的最新基线相比,它具有显着的性能增长。

Inference on a large-scale knowledge graph (KG) is of great importance for KG applications like question answering. The path-based reasoning models can leverage much information over paths other than pure triples in the KG, which face several challenges: all the existing path-based methods are data-driven, lacking explainability for path representation. Besides, some methods either consider only relational paths or ignore the heterogeneity between entities and relations both contained in paths, which cannot capture the rich semantics of paths well. To address the above challenges, in this work, we propose a novel joint semantics and data-driven path representation that balances explainability and generalization in the framework of KG embedding. More specifically, we inject horn rules to obtain the condensed paths by the transparent and explainable path composition procedure. The entity converter is designed to transform the entities along paths into the representations in the semantic level similar to relations for reducing the heterogeneity between entities and relations, in which the KGs both with and without type information are considered. Our proposed model is evaluated on two classes of tasks: link prediction and path query answering task. The experimental results show that it has a significant performance gain over several different state-of-the-art baselines.

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