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DIG: Dive into Graphs is a turnkey library for graph deep learning research.

:fire:Update (2022/07): We have upgraded our DIG library based on PyG 2.0.0. We recommend installing our latest version.

Why DIG?

The key difference with current graph deep learning libraries, such as PyTorch Geometric (PyG) and Deep Graph Library (DGL), is that, while PyG and DGL support basic graph deep learning operations, DIG provides a unified testbed for higher-level, research-oriented graph deep learning tasks, such as graph generation, self-supervised learning, explainability, 3D graphs, and graph out-of-distribution.

If you are working or plan to work on research in graph deep learning, DIG enables you to develop your own methods within our extensible framework, and compare with current baseline methods using common datasets and evaluation metrics without extra effort.

Overview

It includes unified implementations of data interfaces, common algorithms, and evaluation metrics for several advanced tasks. Our goal is to enable researchers to easily implement and benchmark algorithms. Currently, we consider the following research directions.

Graph Generation: dig.ggraph
Self-supervised Learning on Graphs: dig.sslgraph
Explainability of Graph Neural Networks: dig.xgraph
Deep Learning on 3D Graphs: dig.threedgraph
Graph OOD: dig.oodgraph
Graph Augmentation: dig.auggraph
Fair Graph Learning: dig.fairgraph

Usage

Example: a few lines of code to run SphereNet on QM9 to incorporate 3D information of molecules.

from dig.threedgraph.dataset import QM93D
from dig.threedgraph.method import SphereNet
from dig.threedgraph.evaluation import ThreeDEvaluator
from dig.threedgraph.method import run

# Load the dataset and split
dataset = QM93D(root='dataset/')
target = 'U0'
dataset.data.y = dataset.data[target]
split_idx = dataset.get_idx_split(len(dataset.data.y), train_size=110000, valid_size=10000, seed=42)
train_dataset, valid_dataset, test_dataset = dataset[split_idx['train']], dataset[split_idx['valid']], dataset[split_idx['test']]

# Define model, loss, and evaluation
model = SphereNet(energy_and_force=False, cutoff=5.0, num_layers=4,
                  hidden_channels=128, out_channels=1, int_emb_size=64,
                  basis_emb_size_dist=8, basis_emb_size_angle=8, basis_emb_size_torsion=8, out_emb_channels=256,
                  num_spherical=3, num_radial=6, envelope_exponent=5,
                  num_before_skip=1, num_after_skip=2, num_output_layers=3)                 
loss_func = torch.nn.L1Loss()
evaluation = ThreeDEvaluator()

# Train and evaluate
run3d = run()
run3d.run(device, train_dataset, valid_dataset, test_dataset, model, loss_func, evaluation,
          epochs=20, batch_size=32, vt_batch_size=32, lr=0.0005, lr_decay_factor=0.5, lr_decay_step_size=15)

For details of all included APIs, please refer to the documentation.
We provide a hands-on tutorial for each direction to help you to get started with DIG: Graph Generation, Self-supervised Learning on Graphs, Explainability of Graph Neural Networks, Deep Learning on 3D Graphs, Graph OOD (GOOD) datasets.
We also provide examples to use APIs provided in DIG. You can get started with your interested directions by clicking the following links.

Graph Generation: JT-VAE, GraphAF, GraphDF, GraphEBM.
Self-supervised Learning on Graphs: InfoGraph, GRACE, MVGRL, GraphCL, LaGraph (v1 supported).
Explainability of Graph Neural Networks: DeepLIFT, GNN-LRP, FlowX, GNNExplainer, GradCAM, PGExplainer, SubgraphX.
Deep Learning on 3D Graphs: SchNet, DimeNet++, SphereNet.
Graph OOD (GOOD) datasets: GOODHIV, GOODPCBA, GOODZINC, GOODCMNIST, GOODMotif, GOODCora, GOODArxiv, GOODCBAS.

Installation

Install from pip

The key dependencies of DIG: Dive into Graphs are PyTorch (>=1.10.0), PyTorch Geometric (>=2.0.0), and RDKit.

Install PyTorch (>=1.10.0)

$ python -c "import torch; print(torch.__version__)"
>>> 1.10.0

Install PyG (>=2.0.0)

$ python -c "import torch_geometric; print(torch_geometric.__version__)"
>>> 2.0.0

Install DIG: Dive into Graphs.

pip install dive-into-graphs

After installation, you can check the version. You have successfully installed DIG: Dive into Graphs if no error occurs.

$ python
>>> from dig.version import __version__
>>> print(__version__)

Install from source

If you want to try the latest features that have not been released yet, you can install dig from source.

git clone https://github.com/divelab/DIG.git
cd DIG
pip install .

Contributing

We welcome any forms of contributions, such as reporting bugs and adding new features. Please refer to our contributing guidelines for

DIG

Install / Use

README