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Attributed Graph Subspace Clustering with Graph-Boosting
Proceedings of the 15th Asian Conference on Machine Learning, PMLR 222:723-738, 2024.
Abstract
Attributed graph clustering groups nodes into disjoint categories with graph convolutional networks and has exhibited promising performance in various applications. However, there are two issues preventing the performance from being improved further. First, the relationships between distant nodes are generally overlooked due to the sparsity of graphs. Second, the graph convolutional networks with few layers are sensitive to noises. To address these issues, we propose Attributed Graph Subspace clustering with Graph-Boosting (AGSGB). Specifically, to deal with the first issue, an auxiliary graph is built from the feature matrix to establish the distant relationships. And to address the second issue, a subspace clustering module, famous for its robustness to noise, is introduced. Based on the auxiliary graph and the subspace clustering module, a graph enhance module and a graph refine module are constructed, together with the graph autoencoder constituting the final clustering model. By using the given graph and the refined graph built by the graph refine module, a dual guidance supervisor is designed to train the clustering model. Finally, the clustering result can be obtained by the subspace clustering module. Extensive experimental results on five public benchmark datasets validate the effectiveness of the proposed method.