mlsanityData to 14 Oct 2026

Learning Graph Foundation Models on Riemannian Graph-of-Graphs

arXiv 2605.09993 ↗First posted 11 May 2026cs.LGcited by 3

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Abstract (arXiv)

Graph foundation models (GFMs), pretrained on massive graph data, have transformed graph machine learning by supporting general-purpose reasoning across diverse graph tasks and domains. Existing GFMs pretrained with fixed-hop subgraph sampling impose a fixed receptive field, causing scale mismatch on diverse tasks, which often require heterogeneous and unknown structural contexts beyond a fixed sampling scale. We propose R-GFM, a Riemannian Graph-of-Graphs (GoG) based foundation model, that treats structural scale as a first-class citizen in modeling. R-GFM constructs a multi-scale GoG over-sampled subgraphs at different hop distances and learns geometry-adaptive representations from Riemannian manifolds. Theoretical analysis shows that R-GFM reduces structural domain generalization error compared to fixed-scale GFMs. Experiments on various datasets demonstrate that R-GFM achieves state-of-the-art performance, with up to a 49% relative improvement on downstream tasks. Our code is available at https://github.com/USTC-DataDarknessLab/R-GFM.

Key facts. Cited by 3 papers in the map (data through 14 Oct 2026). Builds on 52 of its 68 references that are in the map. First posted on arXiv 11 May 2026.

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52 of 68 references.

References · 52

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38 more
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