School of Computer Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, PR China.
Division of Computer Science and Informatics, School of Engineering, London South Bank University, London SE1 0AA, UK.
Math Biosci Eng. 2019 Aug 26;16(6):7789-7807. doi: 10.3934/mbe.2019391.
Entity prediction is the task of predicting a missing entity that has a specific relation-ship with another given entity. Researchers usually use knowledge graphs embedding(KGE) methods to embed triples into continuous vectors for computation and perform the tasks of entity prediction. However, KGE models tend to use simple operations to refactor entities and relationships, resulting in insufficient interaction of components of knowledge graphs (KGs), thus limiting the performance of the entity prediction model. In this paper, we propose a new entity prediction model called FRS(Feature Refactoring Scoring) to alleviate the problem of insufficient interaction and solve information incom-pleteness problems in the KGs. Different from the traditional KGE methods of directly using simple operations, the FRS model innovatively provides the procedure of feature processing in the entity prediction tasks, realizing the alignment of entities and relationships in the same feature space and improving the performance of entity prediction model. Although FRS is a simple three-layer network, we find that our own model outperforms state-of-the-art KGC methods in FB15K and WN18. Through extensive experiments on FRS, we discover several insights. For example, the effect of embedding size and negative candidate sampling probability on experimental results is in reverse.
实体预测是指预测与另一个给定实体具有特定关系的缺失实体的任务。研究人员通常使用知识图嵌入(KGE)方法将三元组嵌入连续向量中进行计算,并执行实体预测任务。然而,KGE 模型往往使用简单的操作来重构实体和关系,导致知识图(KG)的组件之间的交互不足,从而限制了实体预测模型的性能。在本文中,我们提出了一种名为 FRS(特征重构评分)的新实体预测模型,以缓解交互不足的问题,并解决 KG 中的信息不完整问题。与传统的直接使用简单操作的 KGE 方法不同,FRS 模型创新性地提供了实体预测任务中的特征处理过程,实现了实体和关系在同一特征空间中的对齐,提高了实体预测模型的性能。虽然 FRS 是一个简单的三层网络,但我们发现我们自己的模型在 FB15K 和 WN18 上优于最先进的 KGC 方法。通过对 FRS 进行广泛的实验,我们发现了几个有启发性的结果。例如,嵌入大小和负候选抽样概率对实验结果的影响是相反的。