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Computing topological parameters of biological networks

Y. Assenov,Fidel Ramírez,Sven-Eric Schelhorn,Thomas Lengauer,M. Albrecht

Published 2008 in Bioinform.

ABSTRACT

UNLABELLED Rapidly increasing amounts of molecular interaction data are being produced by various experimental techniques and computational prediction methods. In order to gain insight into the organization and structure of the resultant large complex networks formed by the interacting molecules, we have developed the versatile Cytoscape plugin NetworkAnalyzer. It computes and displays a comprehensive set of topological parameters, which includes the number of nodes, edges, and connected components, the network diameter, radius, density, centralization, heterogeneity, and clustering coefficient, the characteristic path length, and the distributions of node degrees, neighborhood connectivities, average clustering coefficients, and shortest path lengths. NetworkAnalyzer can be applied to both directed and undirected networks and also contains extra functionality to construct the intersection or union of two networks. It is an interactive and highly customizable application that requires no expert knowledge in graph theory from the user. AVAILABILITY NetworkAnalyzer can be downloaded via the Cytoscape web site: http://www.cytoscape.org

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