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Contrastive Structured Anomaly Detection for Gaussian Graphical Models
In order to detect structural anomalies in a GGM, we consider the problem of estimating changes in the precision matrix of the corresponding Gaussian distribution.
Semantic Scan: Detecting Subtle, Spatially Localized Events in Text Streams
Many methods have been proposed for detecting emerging events in text streams using topic modeling.
Spatial Semantic Scan: Jointly Detecting Subtle Events and their Spatial Footprint
Many methods have been proposed for detecting emerging events in text streams using topic modeling.
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