GraphGAN: Graph Representation Learning With Generative Adversarial Nets

Authors

  • Hongwei Wang Shanghai Jiao Tong University
  • Jia Wang The Hong Kong Polytechnic University
  • Jialin Wang Huazhong University of Science and Technology
  • Miao Zhao The Hong Kong Polytechnic University
  • Weinan Zhang Shanghai Jiao Tong University
  • Fuzheng Zhang Microsoft Research Asia
  • Xing Xie Microsoft Research Asia
  • Minyi Guo Shanghai Jiao Tong University

Keywords:

graph representation learning, generative adversarial nets, graph softmax

Abstract

The goal of graph representation learning is to embed each vertex in a graph into a low-dimensional vector space. Existing graph representation learning methods can be classified into two categories: generative models that learn the underlying connectivity distribution in the graph, and discriminative models that predict the probability of edge existence between a pair of vertices. In this paper, we propose GraphGAN, an innovative graph representation learning framework unifying above two classes of methods, in which the generative model and discriminative model play a game-theoretical minimax game. Specifically, for a given vertex, the generative model tries to fit its underlying true connectivity distribution over all other vertices and produces "fake" samples to fool the discriminative model, while the discriminative model tries to detect whether the sampled vertex is from ground truth or generated by the generative model. With the competition between these two models, both of them can alternately and iteratively boost their performance. Moreover, when considering the implementation of generative model, we propose a novel graph softmax to overcome the limitations of traditional softmax function, which can be proven satisfying desirable properties of normalization, graph structure awareness, and computational efficiency. Through extensive experiments on real-world datasets, we demonstrate that GraphGAN achieves substantial gains in a variety of applications, including link prediction, node classification, and recommendation, over state-of-the-art baselines.

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Published

2018-04-26

How to Cite

Wang, H., Wang, J., Wang, J., Zhao, M., Zhang, W., Zhang, F., Xie, X., & Guo, M. (2018). GraphGAN: Graph Representation Learning With Generative Adversarial Nets. Proceedings of the AAAI Conference on Artificial Intelligence, 32(1). Retrieved from https://ojs.aaai.org/index.php/AAAI/article/view/11872

Issue

Section

Main Track: Machine Learning Applications