BiGCN: A Bi-directional Low-Pass Filtering Graph Neural Network
Authors: Zhixian Chen, Tengfei Ma, Zhihua Jin, Yangqiu Song, Yang Wang
Keywords: Graph convolutional networks, graph filtering, Laplacian smooth, ADMM
Abstract: Graph convolutional networks have achieved great success on graph-structured data. Many graph convolutional networks can be regarded as low-pass filters for graph signals. In this paper, we propose a new model, BiGCN, which represents a graph neural network as a bi-directional low-pass filter. Specifically, we not only consider the original graph structure information but also the latent correlation between features, thus BiGCN can filter the signals along with both the original graph and a latent feature-connection graph. Our model outperforms previous graph neural networks in the tasks of node classification and link prediction on benchmark datasets, especially when we add noise to the node features.