Multiscale Ensemble Clustering for Finding Module and Modular Structure of Brain Networks

Tae-Wook Ko

The identification of modules in complex networks is important for the understanding of systems. Here, we propose an ensemble clustering method incorporating node groupings in various sizes and the sequential removal of weak ties between nodes which are rarely grouped together. This method successfully detects modules in various networks, such as hierarchical random networks and the American college football network, with known modular structures. Some of the results are compared with those obtained by modularity optimization and K-means clustering. Using this method, we briefly discuss the modular structure of brain networks. References: [1] E.-Y. Kim, D.-U. Hwang, and T.-W. Ko, Phys. Rev. E 85, 026119 (2012).