Physics – Physics and Society
Scientific paper
2011-07-11
Physics
Physics and Society
10 pages, 6 figures, accepted by EPJB 2012 Feb
Scientific paper
In a complex network, different groups of nodes may have existed for different amounts of time. To detect the evolutionary history of a network is of great importance. We present a general method based on spectral analysis to address this fundamental question in network science. In particular, we argue and demonstrate, using model and real-world networks, the existence of positive correlation between the magnitudes of eigenvalues and node ages. In situations where the network topology is unknown but short time series measured from nodes are available, we suggest to uncover the network topology at the present (or any given time of interest) by using compressive sensing and then perform the spectral analysis. Knowledge of ages of various groups of nodes can provide significant insights into the evolutionary process underpinning the network.
Baowen Li
Guimei Zhu
Huijie Yang
Jie Ren
Rui Yang
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