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• W2669485504 abstract "Graph representations offer powerful and intuitive ways to describe data in a multitude of application domains. Here, we consider stochastic processes generating graphs and propose a methodology for detecting changes in stationarity of such processes. The methodology is general and considers a process generating attributed graphs with a variable number of vertices/edges, without the need to assume a one-to-one correspondence between vertices at different time steps. The methodology acts by embedding every graph of the stream into a vector domain, where a conventional multivariate change detection procedure can be easily applied. We ground the soundness of our proposal by proving several theoretical results. In addition, we provide a specific implementation of the methodology and evaluate its effectiveness on several detection problems involving attributed graphs representing biological molecules and drawings. Experimental results are contrasted with respect to suitable baseline methods, demonstrating the effectiveness of our approach." @default.
• W2669485504 created "2017-06-30" @default.
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• W2669485504 date "2018-11-01" @default.
• W2669485504 modified "2023-09-24" @default.
• W2669485504 title "Concept Drift and Anomaly Detection in Graph Streams" @default.
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• W2669485504 doi "https://doi.org/10.1109/tnnls.2018.2804443" @default.
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