InstructGraph: Boosting Large Language Models via Graph-centric Instruction Tuning and Preference Alignment

Jianing Wang, Junda Wu, Yupeng Hou, Yao Liu, Ming Gao, Julian McAuley


Abstract
Do current large language models (LLMs) better solve graph reasoning and generation tasks with parameter updates? In this paper, we propose InstructGraph, a framework that empowers LLMs with the abilities of graph reasoning and generation by instruction tuning and preference alignment. Specifically, we first propose a structured format verbalizer to unify all graph data into a universal code-like format, which can simply represent the graph without any external graph-specific encoders. Furthermore, a graph instruction tuning stage is introduced to guide LLMs in solving graph reasoning and generation tasks. Finally, we identify potential hallucination problems in graph tasks and sample negative instances for preference alignment, the target of which is to enhance the output’s reliability of the model. Extensive experiments across multiple graph-centric tasks exhibit that InstructGraph can achieve the best performance and outperform GPT-4 and LLaMA2 by more than 13% and 38%, respectively.
Anthology ID:
2024.findings-acl.801
Volume:
Findings of the Association for Computational Linguistics: ACL 2024
Month:
August
Year:
2024
Address:
Bangkok, Thailand
Editors:
Lun-Wei Ku, Andre Martins, Vivek Srikumar
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
13492–13510
Language:
URL:
https://aclanthology.org/2024.findings-acl.801
DOI:
10.18653/v1/2024.findings-acl.801
Bibkey:
Cite (ACL):
Jianing Wang, Junda Wu, Yupeng Hou, Yao Liu, Ming Gao, and Julian McAuley. 2024. InstructGraph: Boosting Large Language Models via Graph-centric Instruction Tuning and Preference Alignment. In Findings of the Association for Computational Linguistics: ACL 2024, pages 13492–13510, Bangkok, Thailand. Association for Computational Linguistics.
Cite (Informal):
InstructGraph: Boosting Large Language Models via Graph-centric Instruction Tuning and Preference Alignment (Wang et al., Findings 2024)
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PDF:
https://aclanthology.org/2024.findings-acl.801.pdf