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GreatX: Graph Reliability Toolbox

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❓ What is "Reliability" on Graphs?

threats

"Reliability" on graphs refers to robustness against the following threats:

Inherent noise
Distribution Shift
Adversarial Attacks

For more details, please kindly refer to our paper Recent Advances in Reliable Deep Graph Learning: Inherent Noise, Distribution Shift, and Adversarial Attack

💨 News

November 2, 2022: We are planning to release GreatX 0.1.0 this month, stay tuned!
June 30, 2022: GraphWar has been renamed to GreatX.
~~June 9, 2022: GraphWar v0.1.0 has been released. We also provide the documentation along with numerous examples~~ .
~~May 27, 2022: GraphWar has been refactored with PyTorch Geometric (PyG), old code based on DGL can be found here. We will soon release the first version of GreatX, stay tuned!~~

NOTE: GreatX is still in the early stages and the API will likely continue to change. If you are interested in this project, don't hesitate to contact me or make a PR directly.

🚀 Installation

Please make sure you have installed PyTorch and PyTorch Geometric (PyG).

# Coming soon
pip install -U greatx

# Recommended
git clone https://github.com/EdisonLeeeee/GreatX.git && cd GreatX
pip install -e . --verbose

where -e means "editable" mode so you don't have to reinstall every time you make changes.

⚡ Get Started

Assume that you have a torch_geometric.data.Data instance data that describes your graph.

How fast can we train and evaluate your own GNN?

Take GCN as an example:

from greatx.nn.models import GCN
from greatx.training import Trainer
from torch_geometric.datasets import Planetoid
# Any PyG dataset is available!
dataset = Planetoid(root='.', name='Cora')
data = dataset[0]
model = GCN(dataset.num_features, dataset.num_classes)
trainer = Trainer(model, device='cuda:0') # or 'cpu'
trainer.fit(data, mask=data.train_mask)
trainer.evaluate(data, mask=data.test_mask)

A simple targeted manipulation attack

from greatx.attack.targeted import RandomAttack
attacker = RandomAttack(data)
attacker.attack(1, num_budgets=3) # attacking target node `1` with `3` edges
attacked_data = attacker.data()
edge_flips = attacker.edge_flips()

A simple untargeted (non-targeted) manipulation attack

from greatx.attack.untargeted import RandomAttack
attacker = RandomAttack(data)
attacker.attack(num_budgets=0.05) # attacking the graph with 5% edges perturbations
attacked_data = attacker.data()
edge_flips = attacker.edge_flips()

👀 Implementations

In detail, the following methods are currently implemented:

⚔ Adversarial Attack

Graph Manipulation Attack (GMA)

Targeted Attack

Methods	Descriptions	Examples
RandomAttack	A simple random method that chooses edges to flip randomly.	[Example]
DICEAttack	Waniek et al. Hiding Individuals and Communities in a Social Network, Nature Human Behavior'16	[Example]
Nettack	Zügner et al. Adversarial Attacks on Neural Networks for Graph Data, KDD'18	[Example]
FGAttack	Chen et al. Fast Gradient Attack on Network Embedding, arXiv'18	[Example]
GFAttack	Chang et al. A Restricted Black - box Adversarial Framework Towards Attacking Graph Embedding Models, AAAI'20	[Example]
IGAttack	Wu et al. Adversarial Examples on Graph Data: Deep Insights into Attack and Defense, IJCAI'19	[Example]
SGAttack	Li et al. Adversarial Attack on Large Scale Graph, TKDE'21	[Example]
PGDAttack	Xu et al. Topology Attack and Defense for Graph Neural Networks: An Optimization Perspective, IJCAI'19	[Example]

Untargeted Attack

Methods	Descriptions	Examples
RandomAttack	A simple random method that chooses edges to flip randomly	[Example]
DICEAttack	Waniek et al. Hiding Individuals and Communities in a Social Network, Nature Human Behavior'16	[Example]
FGAttack	Chen et al. Fast Gradient Attack on Network Embedding, arXiv'18	[Example]
Metattack	Zügner et al. Adversarial Attacks on Graph Neural Networks via Meta Learning, ICLR'19	[Example]
IGAttack	Wu et al. Adversarial Examples on Graph Data: Deep Insights into Attack and Defense, IJCAI'19	[Example]
PGDAttack	Xu et al. Topology Attack and Defense for Graph Neural Networks: An Optimization Perspective, IJCAI'19	[Example]

Graph Injection Attack (GIA)

Methods	Descriptions	Examples
RandomInjection	A simple random method that chooses nodes to inject randomly.	[Example]
AdvInjection	The 2nd place solution of KDD Cup 2020, team: ADVERSARIES.	[Example]

Graph Universal Attack (GUA)

Graph Backdoor Attack (GBA)

Methods	Descriptions	Examples
LGCBackdoor	Chen et al. Neighboring Backdoor Attacks on Graph Convolutional Network, arXiv'22	[Example]
FGBackdoor	Chen et al. Neighboring Backdoor Attacks on Graph Convolutional Network, arXiv'22	[Example]

Enhancing Techniques or Corresponding Defense

Standard GNNs (without defense)

Supervised

Methods	Descriptions	Examples
GCN	Kipf et al. Semi-Supervised Classification with Graph Convolutional Networks, ICLR'17	[Example]
SGC	Wu et al. Simplifying Graph Convolutional Networks, ICLR'19	[Example]
GAT	Veličković et al. Graph Attention Networks, ICLR'18	[Example]
DAGNN	Liu et al. Towards Deeper Graph Neural Networks, KDD'20	[Example]
APPNP	Klicpera et al. Predict then Propagate: Graph Neural Networks meet Personalized PageRank, ICLR'19	[Example]
JKNet	Xu et al. Representation Learning on Graphs with Jumping Knowledge Networks, ICML'18	[Example]
TAGCN	Du et al. Topological Adaptive Graph Convolutional Networks, arXiv'17	[Example]
SSGC	Zhu et al. Simple Spectral Graph Convolution, ICLR'21	[Example]
DGC	Wang et al. Dissecting the Diffusion Process in Linear Graph Convolutional Networks, NeurIPS'21	[Example]
NLGCN, NLMLP, NLGAT	Liu et al. Non-Local Graph Neural Networks, TPAMI'22	[Example]
SpikingGCN	Zhu et al. Spiking Graph Convolutional Networks, IJCAI'22	[Example]

Unsupervised/Self-supervise

Methods	Descriptions	Examples
DGI	Veličković et al. Deep Graph Infomax, ICLR'19	[Example]
GRACE	Zhu et al. Deep Graph Contrastive Representation Learning, ICML'20	[Example]
CCA-SSG	Zhang et al. From Canonical Correlation Analysis to Self-supervised Graph Neural Networks, NeurIPS'21	[Example]
GGD	Zheng et al. Rethinking and Scaling Up Graph Contrastive Learning: An Extremely Efficient Approach with Group Discrimination, NeurIPS'22	[Example]

Techniques Against Adversarial Attacks

Methods	Descriptions	Examples
MedianGCN	Chen et al. Understanding Structural Vulnerability in Graph Convolutional Networks, IJCAI'21	[Example]
RobustGCN	Zhu et al. Robust Graph Convolutional Networks Against Adversarial Attacks, KDD'19	[Example]
SoftMedianGCN	Geisler et al. Reliable Graph Neural Networks via Robust Aggregation, NeurIPS'20<br>Geisler et al. Robustness of Graph Neural Networks at Scale, NeurIPS'21	[Example]
ElasticGNN	Liu et al. Elastic Graph Neural Networks, ICML'21	[Example]
AirGNN	Liu et al. Graph Neural Networks with Adaptive Residual, NeurIPS'21	[Example]
SimPGCN	Jin et al. Node Similarity Preserving Graph Convolutional Networks, WSDM'21	[Example]
SAT	Li et al. Spectral Adversarial Training for Robust Graph Neural Network, arXiv'22	[Example]
JaccardPurification	Wu et al. Adversarial Examples on Graph Data: Deep Insights into Attack and Defense, IJCAI'19	[Example]
SVDPurification	Entezari et al. All You Need Is Low (Rank): Defending Against Adversarial Attacks on Graphs, WSDM'20	[Example]
GNNGUARD	Zhang et al. GNNGUARD: Defending Graph Neural Networks against Adversarial Attacks, NeurIPS'20	[Example]
GUARD	Li et al. GUARD: Graph Universal Adversarial Defense, arXiv'22	[Example]
RTGCN	Wu et al. Robust Tensor Graph Convolutional Networks via T-SVD based Graph Augmentation, KDD'22	[Example]

More details of literatures and the official codes can be found at Awesome Graph Adversarial Learning.

Techniques Against Inherent Noise

Methods	Descriptions	Examples
DropEdge	Rong et al. DropEdge: Towards Deep Graph Convolutional Networks on Node Classification, ICLR'20	[Example]
DropNode	You et al. Graph Contrastive Learning with Augmentations, NeurIPS'20	[Example]
DropPath	Li et al. MaskGAE: Masked Graph Modeling Meets Graph Autoencoders, arXiv'22'	[Example]
FeaturePropagation	Rossi et al. On the Unreasonable Effectiveness of Feature propagation in Learning on Graphs with Missing Node Features, Log'22	[Example]

Miscellaneous

Methods	Descriptions	Examples
Centered Kernel Alignment (CKA)	Nguyen et al. Do Wide and Deep Networks Learn the Same Things? Uncovering How Neural Network Representations Vary with Width and Depth, ICLR'21	[Example]

❓ Known Issues

Untargeted attacks are suffering from performance degradation, as also in DeepRobust, when a validation set is used during training with model picking. Such phenomenon has also been revealed in Black-box Gradient Attack on Graph Neural Networks: Deeper Insights in Graph-based Attack and Defense.