arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.12718cs.AIcs.CL
收藏

基于对抗学习的用户-项目交互数据隐式实体偏好挖掘及知识图谱补全

Mining Implicit Entity Preference from User-Item Interaction Data for Knowledge Graph Completion via Adversarial Learning

Renmin University of China(中国人民大学);Peking University(北京大学)

Gaole He, Junyi Li, Wayne Xin Zhao, Peiju Liu, Ji-Rong Wen

摘要:

知识图谱补全(KGC)任务旨在自动推断知识图谱(KG)中缺失的事实信息。在本文中,我们采取了一个新的视角,旨在利用丰富的用户-项目交互数据(简称用户交互数据),以改善KGC任务。我们的工作的灵感来自观察,许多KG实体对应于应用系统中的在线项目。然而,这两种数据源有很大的不同的内在特性,它很可能会伤害原来的性能,使用简单的融合策略。为了应对这一挑战,我们提出了一种新的对抗性学习方法,利用用户交互数据进行KGC任务。我们的生成器是从用户交互数据隔离,并用于提高性能的测试。该算法将用户交互数据中学习到的有用信息作为输入,逐步增强评估能力,以识别生成器生成的虚假样本。为了发现用户隐含的实体偏好,设计了一种基于图神经网络的协同学习算法,并与学习算法进行联合优化。这种方法有效地缓解了KGC任务的数据异构性和语义复杂性问题。在三个真实世界数据集上的大量实验证明了我们的方法在KGC任务上的有效性。

英文摘要:

The task of Knowledge Graph Completion (KGC) aims to automatically infer the missing fact information in Knowledge Graph (KG). In this paper, we take a new perspective that aims to leverage rich user-item interaction data (user interaction data for short) for improving the KGC task. Our work is inspired by the observation that many KG entities correspond to online items in application systems. However, the two kinds of data sources have very different intrinsic characteristics, and it is likely to hurt the original performance using simple fusion strategy. To address this challenge, we propose a novel adversarial learning approach by leveraging user interaction data for the KGC task. Our generator is isolated from user interaction data, and serves to improve the performance of the discriminator. The discriminator takes the learned useful information from user interaction data as input, and gradually enhances the evaluation capacity in order to identify the fake samples generated by the generator. To discover implicit entity preference of users, we design an elaborate collaborative learning algorithms based on graph neural networks, which will be jointly optimized with the discriminator. Such an approach is effective to alleviate the issues about data heterogeneity and semantic complexity for the KGC task. Extensive experiments on three real-world datasets have demonstrated the effectiveness of our approach on the KGC task.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑