GraphMAE2: A Decoding-Enhanced Masked Self-Supervised Graph Learner

Implementation for WWW'23 paper: GraphMAE2: A Decoding-Enhanced Masked Self-Supervised Graph Learner.

[GraphMAE] The predecessor of this work: GraphMAE: Self-Supervised Masked Graph Autoencoders can be found here.

❗ Update

[2023-04-19] We have made checkpoints of pre-trained models on different datasets available - feel free to download them from Google Drive.

Dependencies

• Python >= 3.7
• Pytorch >= 1.9.0
• pyyaml == 5.4.1

Quick Start

For quick start, you could run the scripts:

Node classification

sh run_minibatch.sh <dataset_name> <gpu_id> # for mini batch node classification
# example: sh run_minibatch.sh ogbn-arxiv 0
sh run_fullbatch.sh <dataset_name> <gpu_id> # for full batch node classification
# example: sh run_fullbatch.sh cora 0

# Or you could run the code manually:
# for mini batch node classification
python main_large.py --dataset ogbn-arxiv --encoder gat --decoder gat --seed 0 --device 0
# for full batch node classification
python main_full_batch.py --dataset cora --encoder gat --decoder gat --seed 0 --device 0

Supported datasets:

• mini batch node classification: ogbn-arxiv, ogbn-products, mag-scholar-f, ogbn-papers100M
• full batch node classification: cora, citeseer, pubmed

Run the scripts provided or add --use_cfg in command to reproduce the reported results.

For Large scale graphs Before starting mini-batch training, you'll need to generate local clusters if you want to use local-clustering for training. By default, the program will load dataset from ./data and save the generated local clusters to ./lc_ego_graphs. To generate a local cluster, you should first install localclustering and then run the following command:

python ./datasets/localclustering.py --dataset <your_dataset> --data_dir <path_to_data>

And we also provide the pre-generated local clusters which can be downloaded here and then put into lc_ego_graphs for usage.

Datasets

During the code's execution, the OGB and small-scale datasets (Cora, Citeseer, and PubMed) will be downloaded automatically. For the MAG-SCHOLAR dataset, you can download the raw data from here or use our processed version, which can be found here (the four feature files have to be merged in to a feature_f.npy). Once you have the dataset, place it into the ./data/mag_scholar_f folder for later usage. The folder should contain the following files:

- mag_scholar_f
|--- edge_index_f.npy
|--- split_idx_f.pt
|--- feature_f.npy
|--- label_f.npy

Soon, we will provide SAINTSampler as the baseline.

Experimental Results

Experimental results of node classification on large-scale datasets (Accuracy, %):

	Ogbn-arxiv	Ogbn-products	Mag-Scholar-F	Ogbn-papers100M
MLP	55.50±0.23	61.06±0.08	39.11±0.21	47.24±0.31
SGC	66.92±0.08	74.87±0.25	54.68±0.23	63.29±0.19
Random-Init	68.14±0.02	74.04±0.06	56.57±0.03	61.55±0.12
CCA-SSG	68.57±0.02	75.27±0.05	51.55±0.03	55.67±0.15
GRACE	69.34±0.01	79.47±0.59	57.39±0.02	61.21±0.12
BGRL	70.51±0.03	78.59±0.02	57.57±0.01	62.18±0.15
GGD	-	75.70±0.40	-	63.50±0.50
GraphMAE	71.03±0.02	78.89±0.01	58.75±0.03	62.54±0.09
GraphMAE2	71.89±0.03	81.59±0.02	59.24±0.01	64.89±0.04

Citing

If you find this work is helpful to your research, please consider citing our paper:

@inproceedings{hou2023graphmae2,
  title={GraphMAE2: A Decoding-Enhanced Masked Self-Supervised Graph Learner},
  author={Zhenyu Hou, Yufei He, Yukuo Cen, Xiao Liu, Yuxiao Dong, Evgeny Kharlamov, Jie Tang},
  booktitle={Proceedings of the ACM Web Conference 2023 (WWW’23)},
  year={2023}
}