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Noisy scale-free networks |
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| Authors: | Jan Scholz, Math us Dejori, Martin Stetter,Martin Greiner |
| Affiliation: | aCorporate Technology, Information & Communications, Siemens AG, D-81730 München, Germany bInstitut für Theoretische Physik, Justus Liebig Universität,Heinrich-Buff-Ring 16, D-35392 Gießen, Germany cInstitut für Informatik, TU München, Boltzmannstraße 3,D-85748 Garching, Germany |
| Abstract: | The impact of observational noise on the analysis of scale-free networks is studied. Various noise sources are modeled as random link removal, random link exchange and random link addition. Emphasis is on the resulting modifications for the node-degree distribution and for a functional ranking based on betweenness centrality. The implications for estimated gene-expressed networks for childhood acute lymphoblastic leukemia are discussed. |
| Keywords: | Complex networks Scale-free networks Gene regulatory networks Noise |
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