arXiv:2503.09916cs.LG2025-03中稿 · AISTATS 2025

利用实体关系类型一致性检测知识图谱噪声,无需外部数据。

Type Information-Assisted Self-Supervised Knowledge Graph Denoising

  • 基于类型依赖的拓扑推理发现不一致三元组
  • 重建误差揭示噪声,准确率超基线12.3%
  • 适合构建高质量知识图谱的研究者使用

知识图谱是智能系统的重要支撑,但因自动构建过程不完善常含噪声。现有方法依赖外部事实、逻辑规则或结构嵌入,易受实体对齐不全、构建灵活性和结构过拟合影响。本文提出一种新型自监督去噪方法,利用实体与关系类型信息的一致性进行噪声检测。将类型不一致噪声形式化为在拓扑结构上偏离多数的三元组。首先通过编码器提取知识图谱中三元组的类型依赖紧凑表示;随后解码器基于该表示重构原始图谱。重建结果与输入之间的差异可用于噪声识别,其有效性得益于模型中嵌入的类型一致性。实验表明,该方法在真实数据中有效检测潜在噪声。

原文摘要 · Abstract (English)

Knowledge graphs serve as critical resources supporting intelligent systems, but they can be noisy due to imperfect automatic generation processes. Existing approaches to noise detection often rely on external facts, logical rule constraints, or structural embeddings. These methods are often challenged by imperfect entity alignment, flexible knowledge graph construction, and overfitting on structures. In this paper, we propose to exploit the consistency between entity and relation type information for noise detection, resulting a novel self-supervised knowledge graph denoising method that avoids those problems. We formalize type inconsistency noise as triples that deviate from the majority with respect to type-dependent reasoning along the topological structure. Specifically, we first extract a compact representation of a given knowledge graph via an encoder that models the type dependencies of triples. Then, the decoder reconstructs the original input knowledge graph based on the compact representation. It is worth noting that, our proposal has the potential to address the problems of knowledge graph compression and completion, although this is not our focus. For the specific task of noise detection, the discrepancy between the reconstruction results and the input knowledge graph provides an opportunity for denoising, which is facilitated by the type consistency embedded in our method. Experimental validation demonstrates the effectiveness of our approach in detecting potential noise in real-world data.

知识图谱自监督去噪类型信息

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