Text-Free Multi-domain Graph Pre-training: Toward Graph Foundation Models

• URL: http://arxiv.org/abs/2405.13934v4
• Date: Sun, 22 Sep 2024 03:47:19 GMT
• Title: Text-Free Multi-domain Graph Pre-training: Toward Graph Foundation Models
• Authors: Xingtong Yu, Chang Zhou, Yuan Fang, Xinming Zhang,
• Abstract summary: We propose MDGPT, a text free Multi-Domain Graph Pre-Training and adaptation framework. First, we propose a set of domain tokens to align features across source domains for synergistic pre-training. Second, we propose a dual prompts, consisting of a unifying prompt and a mixing prompt, to further adapt the target domain with unified multi-domain knowledge.
• Score: 33.2696184519275
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Given the ubiquity of graph data, it is intriguing to ask: Is it possible to train a graph foundation model on a broad range of graph data across diverse domains? A major hurdle toward this goal lies in the fact that graphs from different domains often exhibit profoundly divergent characteristics. Although there have been some initial efforts in integrating multi-domain graphs for pre-training, they primarily rely on textual descriptions to align the graphs, limiting their application to text-attributed graphs. Moreover, different source domains may conflict or interfere with each other, and their relevance to the target domain can vary significantly. To address these issues, we propose MDGPT, a text free Multi-Domain Graph Pre-Training and adaptation framework designed to exploit multi-domain knowledge for graph learning. First, we propose a set of domain tokens to to align features across source domains for synergistic pre-training. Second, we propose a dual prompts, consisting of a unifying prompt and a mixing prompt, to further adapt the target domain with unified multi-domain knowledge and a tailored mixture of domain-specific knowledge. Finally, we conduct extensive experiments involving six public datasets to evaluate and analyze MDGPT, which outperforms prior art by up to 37.9%.

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