One Model for One Graph: A New Perspective for Pretraining with Cross-domain Graphs

• URL: http://arxiv.org/abs/2412.00315v1
• Date: Sat, 30 Nov 2024 01:49:45 GMT
• Title: One Model for One Graph: A New Perspective for Pretraining with Cross-domain Graphs
• Authors: Jingzhe Liu, Haitao Mao, Zhikai Chen, Wenqi Fan, Mingxuan Ju, Tong Zhao, Neil Shah, Jiliang Tang,
• Abstract summary: Graph Neural Networks (GNNs) have emerged as a powerful tool to capture intricate network patterns. Existing GNNs require careful domain-specific architecture designs and training from scratch on each dataset. We propose a novel cross-domain pretraining framework, "one model for one graph"
• Score: 61.9759512646523
• License:
• Abstract: Graph Neural Networks (GNNs) have emerged as a powerful tool to capture intricate network patterns, achieving success across different domains. However, existing GNNs require careful domain-specific architecture designs and training from scratch on each dataset, leading to an expertise-intensive process with difficulty in generalizing across graphs from different domains. Therefore, it can be hard for practitioners to infer which GNN model can generalize well to graphs from their domains. To address this challenge, we propose a novel cross-domain pretraining framework, "one model for one graph," which overcomes the limitations of previous approaches that failed to use a single GNN to capture diverse graph patterns across domains with significant gaps. Specifically, we pretrain a bank of expert models, with each one corresponding to a specific dataset. When inferring to a new graph, gating functions choose a subset of experts to effectively integrate prior model knowledge while avoiding negative transfer. Extensive experiments consistently demonstrate the superiority of our proposed method on both link prediction and node classification tasks.

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