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Self-supervised Auxiliary Learning with Meta-paths for Heterogeneous Graphs

This repository is the implementation of SELAR.

Dasol Hwang<sup>* </sup>, Jinyoung Park<sup>* </sup>, Sunyoung Kwon, Kyung-min Kim, Jung-Woo Ha, Hyunwoo J. Kim, Self-supervised Auxiliary Learning with Meta-paths for Heterogeneous Graphs, In Advanced in Neural Information Processing Systems (NeurIPS 2020).

Data Preprocessing

We used datasets from KGNN-LS and RippleNet for link prediction. Download meta-paths label (meta_labels/) from this link.

data/music/
- ratings_final.npy : preprocessed rating file released by KGNN-LS;
- kg_final.npy : knowledge graph file;
  - meta_labels/
    - pos_meta{}_{}.pickle : meta-path positive label for auxiliary task
    - neg_meta{}_{}.pickle : meta-path negative label for auxiliary task
data/book/
- ratings_final.npy : preprocessed rating file released by RippleNet;
- kg_final.npy : knowledge graph file;
  - meta_labels/
    - pos_meta{}_{}.pickle : meta-path positive label for auxiliary task
    - neg_meta{}_{}.pickle : meta-path negative label for auxiliary task

Required packages

A list of dependencies will need to be installed in order to run the code. We provide the dependency yaml file (env.yml)

$ conda env create -f env.yml

Running the code

# check optional arguments [-h]
$ python main_music.py
$ python main_book.py

Overview of the results of link prediction

Last-FM (Music)

Base GNNs	Vanilla	w/o MP	w/ MP	SELAR	SELAR+Hint
GCN	0.7963	0.7899	0.8235	0.8296	0.8121
GAT	0.8115	0.8115	0.8263	0.8294	0.8302
GIN	0.8199	0.8217	0.8242	0.8361	0.8350
SGC	0.7703	0.7766	0.7718	0.7827	0.7975
GTN	0.7836	0.7744	0.7865	0.7988	0.8067

Book-Crossing (Book)

Base GNNs	Vanilla	w/o MP	w/ MP	SELAR	SELAR+Hint
GCN	0.7039	0.7031	0.7110	0.7182	0.7208
GAT	0.6891	0.6968	0.7075	0.7345	0.7360
GIN	0.6979	0.7210	0.7338	0.7526	0.7513
SGC	0.6860	0.6808	0.6792	0.6902	0.6926
GTN	0.6732	0.6758	0.6724	0.6858	0.6850

Citation

@inproceedings{NEURIPS2020_74de5f91,
 author = {Hwang, Dasol and Park, Jinyoung and Kwon, Sunyoung and Kim, KyungMin and Ha, Jung-Woo and Kim, Hyunwoo J},
 booktitle = {Advances in Neural Information Processing Systems},
 editor = {H. Larochelle and M. Ranzato and R. Hadsell and M. F. Balcan and H. Lin},
 pages = {10294--10305},
 publisher = {Curran Associates, Inc.},
 title = {Self-supervised Auxiliary Learning with Meta-paths for Heterogeneous Graphs},
 url = {https://proceedings.neurips.cc/paper/2020/file/74de5f915765ea59816e770a8e686f38-Paper.pdf},
 volume = {33},
 year = {2020}
}

License

Copyright (c) 2020-present NAVER Corp. and Korea University