In recent years, temporal knowledge graph (TKG) reasoning has received significant attention. Most existing methods assume that all timestamps and corresponding graphs are available during training, which makes it difficult to predict future events. To address this issue, recent works learn to infer future events based on historical information. However, these methods do not comprehensively consider the latent patterns behind temporal changes, to pass historical information selectively, update representations appropriately and predict events accurately. In this paper, we propose the Historical Information Passing (HIP) network to predict future events. HIP network passes information from temporal, structural and repetitive perspectives, which are used to model the temporal evolution of events, the interactions of events at the same time step, and the known events respectively. In particular, our method considers the updating of relation representations and adopts three scoring functions corresponding to the above dimensions. Experimental results on five benchmark datasets show the superiority of HIP network, and the significant improvements on Hits@1 prove that our method can more accurately predict what is going to happen.

我们提出了历史信息传递（HIP）网络来预测未来事件。HIP网络从时间、结构和重复的角度传递信息，用于建模事件的时间演化，相同时间步的事件交互以及已知事件。实验结果表明HIP网络的优越性，并且在Hits@1方面的显著改进证明了我们的方法可以更准确地预测即将发生的事情。

HIP网络：基于历史信息传递的时间知识图的外推推理