Chain of History: Learning and Forecasting with LLMs for Temporal Knowledge Graph Completion

• URL: http://arxiv.org/abs/2401.06072v2
• Date: Wed, 14 Feb 2024 15:49:21 GMT
• Title: Chain of History: Learning and Forecasting with LLMs for Temporal Knowledge Graph Completion
• Authors: Ruilin Luo, Tianle Gu, Haoling Li, Junzhe Li, Zicheng Lin, Jiayi Li, Yujiu Yang
• Abstract summary: Temporal Knowledge Graph Completion (TKGC) is a complex task involving the prediction of missing event links at future timestamps. This paper aims to provide a comprehensive perspective on harnessing the advantages of Large Language Models for reasoning in temporal knowledge graphs.
• Score: 24.545917737620197
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Temporal Knowledge Graph Completion (TKGC) is a complex task involving the prediction of missing event links at future timestamps by leveraging established temporal structural knowledge. This paper aims to provide a comprehensive perspective on harnessing the advantages of Large Language Models (LLMs) for reasoning in temporal knowledge graphs, presenting an easily transferable pipeline. In terms of graph modality, we underscore the LLMs' prowess in discerning the structural information of pivotal nodes within the historical chain. As for the generation mode of the LLMs utilized for inference, we conduct an exhaustive exploration into the variances induced by a range of inherent factors in LLMs, with particular attention to the challenges in comprehending reverse logic. We adopt a parameter-efficient fine-tuning strategy to harmonize the LLMs with the task requirements, facilitating the learning of the key knowledge highlighted earlier. Comprehensive experiments are undertaken on several widely recognized datasets, revealing that our framework exceeds or parallels existing methods across numerous popular metrics. Additionally, we execute a substantial range of ablation experiments and draw comparisons with several advanced commercial LLMs, to investigate the crucial factors influencing LLMs' performance in structured temporal knowledge inference tasks.

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