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UniGAD: Unifying Multi-level Graph Anomaly Detection Yiqing Lin 1, Jianheng Tang

Neural Information Processing Systems

Graph Anomaly Detection (GAD) aims to identify uncommon, deviated, or suspicious objects within graph-structured data. Existing methods generally focus on a single graph object type (node, edge, graph, etc.) and often overlook the inherent connections among different object types of graph anomalies. For instance, a money laundering transaction might involve an abnormal account and the broader community it interacts with. To address this, we present UniGAD, the first unified framework for detecting anomalies at node, edge, and graph levels jointly. Specifically, we develop the Maximum Rayleigh Quotient Subgraph Sampler (MRQSampler) that unifies multi-level formats by transferring objects at each level into graph-level tasks on subgraphs.


Quality-Improved and Property-Preserved Polarimetric Imaging via Complementarily Fusing Chu Zhou

Neural Information Processing Systems

Considering the fact that different types of degraded polarized snapshots would provide complementary knowledge, i.e ., the short-exposure noisy ones tend to be clear while the long-exposure blurry Most of this work was done as a PhD student at Peking University.