为知识图谱链接预测设计多面嵌入框架,有效缓解遗忘并提升长期性能。
Multi-Faceted Continual Knowledge Graph Embedding for Semantic-Aware Link Prediction

- 将新旧知识分置不同嵌入空间,避免语义混淆。
- 在8个数据集上平均提升MRR 1.7%、Hits@10 1.4%,最高达2.7%和3.8%。
- 适合需要持续学习与高精度链接预测的动态知识系统。
持续知识图谱嵌入(CKGE)旨在不断学习新知识(实体与关系)的同时保留已有知识。现有方法通过正则化或重放旧知识来缓解灾难性遗忘,但将实体的新旧知识混同于同一嵌入空间,难以捕捉其随时间演变的多面语义。为此,我们提出多面持续知识图谱嵌入框架(MF-CKGE),在离线学习阶段将时序上的新旧知识分离至不同嵌入空间,防止知识纠缠,并通过语义解耦降低冗余,提升空间效率;在线推理阶段,通过量化语义重要性,自适应选择与查询相关的实体嵌入,减少无关噪声干扰。在八个数据集上的实验表明,MF-CKGE相较于最佳基线,在MRR上平均提升1.7%(最大2.7%),在Hits@10上平均提升1.4%(最大3.8%)。源代码与数据集见:https://anonymous.4open.science/r/MF-CKGE-04E5。
原文摘要 · Abstract (English)
Continual Knowledge Graph Embedding (CKGE) aims to continually learn embeddings for new knowledge, i.e., entities and relations, while retaining previously acquired knowledge. Most existing CKGE methods mitigate catastrophic forgetting via regularization or replaying old knowledge. They conflate new and old knowledge of an entity within the same embedding space to seek a balance between them. However, entities inherently exhibit multi-faceted semantics that evolve dynamically as their relational contexts change over time. A shared embedding fails to capture and distinguish these temporal semantic variations, degrading lifelong link prediction accuracy across snapshots. To address this, we propose a Multi-Faceted CKGE framework (MF-CKGE) for semantic-aware link prediction. During offline learning, MF-CKGE separates temporal old and new knowledge into distinct embedding spaces to prevent knowledge entanglement and employs semantic decoupling to reduce semantic redundancy, thereby improving space efficiency. During online inference, MF-CKGE adaptively identifies semantically query-relevant entity embeddings by quantifying their semantic importance, reducing interference from query-irrelevant noise. Experiments on eight datasets show that MF-CKGE achieves an average (maximum) improvement of 1.7% (2.7%) and 1.4% (3.8%) in MRR and Hits@10, respectively, over the best baseline. Our source code and datasets are available at: https://anonymous.4open.science/r/MF-CKGE-04E5.
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