HIP Network: Historical Information Passing Network for Extrapolation Reasoning on Temporal Knowledge Graph

HIP Network: Historical Information Passing Network for Extrapolation Reasoning on Temporal Knowledge Graph

Yongquan He, Peng Zhang, Luchen Liu, Qi Liang, Wenyuan Zhang, Chuang Zhang

Proceedings of the Thirtieth International Joint Conference on Artificial Intelligence
Main Track. Pages 1915-1921. https://doi.org/10.24963/ijcai.2021/264

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.
Keywords:
Knowledge Representation and Reasoning: Qualitative, Geometric, Spatial, Temporal Reasoning
Natural Language Processing: Embeddings