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• W2946898483 endingPage "121279" @default.
• W2946898483 startingPage "121279" @default.
• W2946898483 abstract "Many networks in society and nature are dynamic, and identifying evolving communities in dynamic networks sheds light on revealing the structure and function of the overall systems. Evolutionary clustering is based on the temporal smoothness framework that simultaneously maximizes the clustering accuracy at the current time step and minimizes the clustering drift between two successive time steps. However, they are criticized for the linear combination of networks at two successive time steps because the relation between networks is unnecessary linear. To address this problem, we propose the Graph regularized Evolutionary Nonnegative Matrix Factorization algorithm (GrENMF) for the dynamic community detection, where the network at the previous time step is transformed as a regularizer into the objective function. Moreover, the local topological structure in the network at the previous time step is preserved in communities at the current time step, which improves the performance of algorithm without increasing the time complexity. Furthermore, we prove the equivalence among evolutionary nonnegative matrix factorization (ENMF), spectral clustering, kernel K-means, modularity density and GrENMF, which serves as the theoretical foundation for the GrENMF algorithm. The experimental results over a number of artificial and real world dynamic networks illustrate that the proposed method is not only more accurate, but also more robust than state-of-the-art approaches." @default.
• W2946898483 created "2019-06-07" @default.
• W2946898483 creator A5025209912 @default.
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• W2946898483 date "2019-09-01" @default.
• W2946898483 modified "2023-10-02" @default.
• W2946898483 title "Detecting evolving communities in dynamic networks using graph regularized evolutionary nonnegative matrix factorization" @default.
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• W2946898483 doi "https://doi.org/10.1016/j.physa.2019.121279" @default.
• W2946898483 hasPublicationYear "2019" @default.
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