no code implementations • 19 Jan 2024 • Jialong Zhou, Xing Ai, Yuni Lai, Kai Zhou
Similar to how structure learning can restore unsigned graphs, balance learning can be applied to signed graphs by improving the balance degree of the poisoned graph.
no code implementations • 18 Jan 2024 • Yulin Zhu, Yuni Lai, Xing Ai, Kai Zhou
This theoretical proof explains the empirical observations that the graph attacker tends to connect dissimilar node pairs based on the similarities of neighbor features instead of ego features both on homophilic and heterophilic graphs.
no code implementations • 2 Aug 2023 • Xing Ai, Jialong Zhou, Yulin Zhu, Gaolei Li, Tomasz P. Michalak, Xiapu Luo, Kai Zhou
Graph anomaly detection (GAD) has achieved success and has been widely applied in various domains, such as fraud detection, cybersecurity, finance security, and biochemistry.
no code implementations • 24 Jul 2023 • Yulin Zhu, Xing Ai, Yevgeniy Vorobeychik, Kai Zhou
We conduct extensive experiments to evaluate the performance of our proposed model, GCHS (Graph Contrastive Learning with Homophily-driven Sanitation View), against two state of the art structural attacks on GCL.
no code implementations • 21 Mar 2023 • Chengyu Sun, Xing Ai, Zhihong Zhang, Edwin R Hancock
In this paper, we propose a novel labeled subgraph entropy graph kernel, which performs well in structural similarity assessment.
no code implementations • 1 Feb 2023 • Yulin Zhu, Xing Ai, Qimai Li, Xiao-Ming Wu, Kai Zhou
Linearized Graph Neural Networks (GNNs) have attracted great attention in recent years for graph representation learning.
no code implementations • 13 Jan 2022 • Xing Ai, Zhihong Zhang, Luzhe Sun, Junchi Yan, Edwin Hancock
The architecture is based on a novel mapping from real-world data to Hilbert space.
no code implementations • 3 Jan 2022 • Xing Ai, Chengyu Sun, Zhihong Zhang, Edwin R Hancock
Moreover, we provide a mathematical analysis of the LPI problem which demonstrates that subgraph-level information is beneficial to overcoming the problems associated with LPI.