Autor según el artículo: Arenas A; Duch J; Fernández A; Gómez S

Departamento: Enginyeria Informàtica i Matemàtiques

e-ISSN: 1367-2630

Autor/es de la URV: Arenas Moreno, Alejandro / Duch Gavaldà, Jordi / Fernández Sabater, Alberto / Gómez Jiménez, Sergio

Resumen: The ubiquity of modular structure in real-world complex networks is the focus of attention in many trials to understand the interplay between network topology and functionality. The best approaches to the identification of modular structure are based on the optimization of a quality function known as modularity. However this optimization is a hard task provided that the computational complexity of the problem is in the non-deterministic polynomial time hard (NP-hard) class. Here we propose an exact method for reducing the size of weighted (directed and undirected) complex networks while maintaining their modularity. This size reduction allows use of heuristic algorithms that optimize modularity for a better exploration of the modularity landscape. We compare the modularity obtained in several real complex-networks by using the extremal optimization algorithm, before and after the size reduction, showing the improvement obtained. We speculate that the proposed analytical size reduction could be extended to an exact coarse graining of the network in the scope of real-space renormalization. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Áreas temáticas: Química Psicología Physics, multidisciplinary Physics and astronomy (miscellaneous) Physics and astronomy (all) Medicina ii Materiais Matemática / probabilidade e estatística Interdisciplinar General physics and astronomy Ensino Engenharias iv Engenharias iii Engenharias i Ciências biológicas i Ciência da computação Biotecnología Astronomia / física

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

Direcció de correo del autor: alexandre.arenas@urv.cat jordi.duch@urv.cat sergio.gomez@urv.cat alberto.fernandez@urv.cat

Identificador del autor: 0000-0003-0937-0334 0000-0003-2639-6333 0000-0003-1820-0062 0000-0002-1241-1646

Fecha de alta del registro: 2023-02-18

Volumen de revista: 9

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://iopscience.iop.org/article/10.1088/1367-2630/9/6/176

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: New Journal Of Physics. 9

Referencia de l'ítem segons les normes APA: Arenas A; Duch J; Fernández A; Gómez S (2007). Size reduction of complex networks preserving modularity. New Journal Of Physics, 9(), -. DOI: 10.1088/1367-2630/9/6/176

DOI del artículo: 10.1088/1367-2630/9/6/176

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2007

Tipo de publicación: Journal Publications