通过融合历史不变性与动态演化,提升时序知识图谱推理能力
CID-TKG: Collaborative Historical Invariance and Evolutionary Dynamics Learning for Temporal Knowledge Graph Reasoning

- 构建历史不变图与动态演化图双结构协同学习
- 在未见时间戳上实现领先性能,外推效果显著
- 适合时序推理、动态知识建模等研究者参考
时序知识图谱(TKG)推理旨在从未见时间点推断未来事实,基于动态演化的实体与关系。尽管已有进展,现有方法仍受限于归纳偏置——主要依赖时间不变或弱时间依赖结构,忽略演化动态。为此,我们提出新型协同学习框架CID-TKG,整合演化动态与历史不变语义作为有效归纳偏置。具体地,构建历史不变图捕捉长期结构规律,演化动态图建模短期时间转移;分别设计编码器学习各结构表征。为缓解两结构间语义差异,将关系分解为视图特定表示,并通过对比目标对齐视图特定查询表示,促进跨视图一致性并抑制视图特异性噪声。大量实验表明,CID-TKG在外推设置下达到当前最优性能。
原文摘要 · Abstract (English)
Temporal knowledge graph (TKG) reasoning aims to infer future facts at unseen timestamps from temporally evolving entities and relations. Despite recent progress, existing approaches still suffer from inherent limitations due to their inductive biases, as they predominantly rely on time-invariant or weakly time-dependent structures and overlook the evolutionary dynamics. To overcome this limitation, we propose a novel collaborative learning framework for TKGR (dubbed CID-TKG) that integrates evolutionary dynamics and historical invariance semantics as an effective inductive bias for reasoning. Specifically, CID-TKG constructs a historical invariance graph to capture long-term structural regularities and an evolutionary dynamics graph to model short-term temporal transitions. Dedicated encoders are then employed to learn representations from each structure. To alleviate semantic discrepancies across the two structures, we decompose relations into view-specific representations and align view-specific query representations via a contrastive objective, which promotes cross-view consistency while suppressing view-specific noise. Extensive experiments verify that our CID-TKG achieves state-of-the-art performance under extrapolation settings.
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