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torch-geometric

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Supports PyTorch Geometric (PyG) graph neural networks — node/link/graph classification, message passing (GCN, GAT, GraphSAGE, GIN), heterogeneous graphs, neighbor sampling, and custom datasets. Use when working with torch_geometric, not for general NetworkX analytics or non-graph PyTorch models.

skills/torch-geometric/SKILL.md

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Nov 9, 2026

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# PyTorch Geometric (PyG)

PyG is the standard library for Graph Neural Networks built on PyTorch. It provides data structures for graphs, 60+ GNN layer implementations, scalable mini-batch training, and support for heterogeneous graphs.

## Installation

Reviewed released **torch-geometric 2.8.0.post1** (2026-10-01); CPU examples tested with **Python 3.13 / PyTorch 2.14.1**. Rolling `latest` docs identify 2.9.0; check the installed release before adopting new APIs. PyG 2.8 requires PyTorch 2.9+; its original release table covers 2.9–2.12. Our 2.14.1 core tests do not establish every extension/backend combination.

```bash
# Install the PyTorch build for your platform from https://pytorch.org/get-started/locally/
uv pip install torch==2.14.1
uv pip install torch-geometric==2.8.0.post1
python -c "import torch, torch_geometric; print(torch.__version__, torch.version.cuda, torch_geometric.__version__)"
```
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