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Main Authors: Chen, Yaqi, Huang, Shixun, Twemlow, Ryan, Wang, Lei, Le, John, Wang, Sheng, Susilo, Willy, Yan, Jun, Shen, Jun
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2604.00399
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author Chen, Yaqi
Huang, Shixun
Twemlow, Ryan
Wang, Lei
Le, John
Wang, Sheng
Susilo, Willy
Yan, Jun
Shen, Jun
author_facet Chen, Yaqi
Huang, Shixun
Twemlow, Ryan
Wang, Lei
Le, John
Wang, Sheng
Susilo, Willy
Yan, Jun
Shen, Jun
contents GNN prompting aims to adapt models across tasks and graphs without requiring extensive retraining. However, most existing graph prompt methods still require task-specific parameter updates and face the issue of generalizing across graphs, limiting their performance and undermining the core promise of prompting. In this work, we introduce a Cross-graph Tuning-free Prompting Framework (CTP), which supports both homogeneous and heterogeneous graphs, can be directly deployed to unseen graphs without further parameter tuning, and thus enables a plug-and-play GNN inference engine. Extensive experiments on few-shot prediction tasks show that, compared to SOTAs, CTP achieves an average accuracy gain of 30.8% and a maximum gain of 54%, confirming its effectiveness and offering a new perspective on graph prompt learning.
format Preprint
id arxiv_https___arxiv_org_abs_2604_00399
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle A Cross-graph Tuning-free GNN Prompting Framework
Chen, Yaqi
Huang, Shixun
Twemlow, Ryan
Wang, Lei
Le, John
Wang, Sheng
Susilo, Willy
Yan, Jun
Shen, Jun
Machine Learning
GNN prompting aims to adapt models across tasks and graphs without requiring extensive retraining. However, most existing graph prompt methods still require task-specific parameter updates and face the issue of generalizing across graphs, limiting their performance and undermining the core promise of prompting. In this work, we introduce a Cross-graph Tuning-free Prompting Framework (CTP), which supports both homogeneous and heterogeneous graphs, can be directly deployed to unseen graphs without further parameter tuning, and thus enables a plug-and-play GNN inference engine. Extensive experiments on few-shot prediction tasks show that, compared to SOTAs, CTP achieves an average accuracy gain of 30.8% and a maximum gain of 54%, confirming its effectiveness and offering a new perspective on graph prompt learning.
title A Cross-graph Tuning-free GNN Prompting Framework
topic Machine Learning
url https://arxiv.org/abs/2604.00399