Interdisciplinary Seminar in Nonlinear Science

Title: Modules and roles: towards a cartography of complex networks
Speaker: Dr. Roger Guimera
Speaker Info: Northwestern University
Brief Description:
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In complex systems, individual components interact with each other giving rise to complex networks, which are neither totally regular or totally random. Because of the interplay between network topology and dynamics, it is crucial to characterize the structure of complex networks. The focus of most research on complex networks has been on global network properties. While global properties may sometimes provide useful insights, their relevance hinges strongly on the homogeneity of the networks. However, most real world networks display a marked modular structure, which means that, rather than being homogeneous in their connectivity, nodes tend to establish many more connections with a subset of the nodes in the network than with the remaining nodes. In my talk, I will discuss recent theoretical and computational developments that enable one to uncover the modular structure of complex networks. I will also discuss how, after identifying network modules, one can classify nodes into roles according to their pattern of intra- and inter-module connections. Finally, I will show that understanding the modular structure of biochemical networks sheds light onto their evolution, and has potential applications for the identification of drug targets.
Date: Friday, February 17, 2006
Time: 2:00PM
Where: Tech M416
Contact Person: Mary Catsicopoulos
Contact email: maryc@northwestern.edu
Contact Phone: 847/491-5586
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