让新出现的实体也能被推理,靠的是相似旧实体的历史模式。
Inductive Reasoning for Temporal Knowledge Graphs with Emerging Entities

- 用语义聚类方法将新实体归入相似旧实体组,共享其推理模式。
- 在多个数据集上,新实体推理的MRR提升28.6%。
- 适合处理动态更新、有持续新实体加入的知识图谱场景。
时序知识图谱(TKG)上的推理对预测未来事件和时间感知事实至关重要。现有方法虽能捕捉关系动态,但受限于封闭世界假设,无法处理训练中未出现的新兴实体。实证研究发现,新兴实体约占所有实体的25%,且因缺乏历史交互导致推理性能显著下降。然而我们观察到,语义相似的实体往往具有相近的交互历史,表明存在可迁移的时间模式。受此启发,提出TransFIR(可迁移归纳推理)框架,利用语义相似已知实体的历史交互序列支持对新兴实体的归纳推理。具体地,设计基于码本的分类器,将新兴实体划入潜在语义簇,从而继承相似实体的推理模式。实验结果表明,TransFIR在多个数据集上均优于所有基线,在新兴实体推理任务中平均提升MRR达28.6%。代码已开源:https://github.com/zhaodazhuang2333/TransFIR。
原文摘要 · Abstract (English)
Reasoning on Temporal Knowledge Graphs (TKGs) is essential for predicting future events and time-aware facts. While existing methods are effective at capturing relational dynamics, their performance is limited by a closed-world assumption, which fails to account for emerging entities not present in the training. Notably, these entities continuously join the network without historical interactions. Empirical study reveals that emerging entities are widespread in TKGs, comprising roughly 25\% of all entities. The absence of historical interactions of these entities leads to significant performance degradation in reasoning tasks. Whereas, we observe that entities with semantic similarities often exhibit comparable interaction histories, suggesting the presence of transferable temporal patterns. Inspired by this insight, we propose TransFIR (Transferable Inductive Reasoning), a novel framework that leverages historical interaction sequences from semantically similar known entities to support inductive reasoning. Specifically, we propose a codebook-based classifier that categorizes emerging entities into latent semantic clusters, allowing them to adopt reasoning patterns from similar entities. Experimental results demonstrate that TransFIR outperforms all baselines in reasoning on emerging entities, achieving an average improvement of 28.6% in Mean Reciprocal Rank (MRR) across multiple datasets. The implementations are available at https://github.com/zhaodazhuang2333/TransFIR.
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