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Research interests

Complex Networks

• Community structure of complex networks at different resolution levels
• Mesoscales identification algorithms
• Dynamics on complex networks: epidemic spreading, routing, games, etc.
• Relationship between structure and dynamics
• Multiplex networks
• Analysis of real world networks: biological networks, social networks, etc.

Neural Networks

• Feed-Forward neural networks: perceptrons, multilayer neural networks, growing architectures
• Recurrent neural networks: discrete time recurrent architectures
• Supervised learning: learning rules, back-propagation, support vector machines
• Unsupervised learning: self-supervised learning, feature maps, dimensionality reduction
• Associative memory: combinatorial optimization
• Applications: image compression, time series, financial markets, etc.

Evolutionary Computation

• Genetic, memetic and population based algorithms
• Applications: combinatorial optimization

Data Mining

• Clustering algorithms: hierarchical clustering, k-means
• Dimensionality reduction: principal component analysis, multidimensional scaling
• Soft computing for data mining

High Energy Physics

• Grid computing for LHCb (CERN)
• Application of soft-computing algorithms

Research groups and projects

Alephsys: Algorithms Embedded in Physical Systems (URV, Tarragona)

• Alex Arenas (Universitat Rovira i Virgili, Tarragona, Spain)
• Sergio Gómez (Universitat Rovira i Virgili, Tarragona, Spain)
• M. Àngels Moncusí (Universitat Rovira i Virgili, Tarragona, Spain)
• Jordi Duch (Universitat Rovira i Virgili, Tarragona, Spain)
• Manlio De Domenico (Universitat Rovira i Virgili, Tarragona, Spain)
• Albert Solé-Ribalta (Universitat Rovira i Virgili, Tarragona, Spain)
• Pau Erola (Universitat Rovira i Virgili, Tarragona, Spain)
• Clara Granell (Universitat Rovira i Virgili, Tarragona, Spain)

PhysComp2: Physics and Computation of Complex Systems (URV, Tarragona + UB, Barcelona)

• PhysComp2 web
• Alex Arenas (Universitat Rovira i Virgili, Tarragona, Spain)
• Sergio Gómez (Universitat Rovira i Virgili, Tarragona, Spain)
• M. Àngels Moncusí (Universitat Rovira i Virgili, Tarragona, Spain)
• Pau Erola (Universitat Rovira i Virgili, Tarragona, Spain)
• Clara Granell (Universitat Rovira i Virgili, Tarragona, Spain)
• Albert Díaz-Guilera (Universitat de Barcelona, Barcelona, Spain)
• Conrad Pérez-Vicente (Universitat de Barcelona, Barcelona, Spain)
• Marian Boguñá (Universitat de Barcelona, Barcelona, Spain)
• Luce Prignano (Universitat de Barcelona, Barcelona, Spain)
• Conrad Pérez-Vicente (Universitat de Barcelona, Barcelona, Spain)
• Oleguer Sagarra (Universitat de Barcelona, Barcelona, Spain)
• Pol Colomer-de-Simón (Universitat de Barcelona, Barcelona, Spain)

Plexmath: Mathematical framework for multiplex networks

• Plexmath web
• Alex Arenas et al (Universitat Rovira i Virgili, Tarragona, Spain)
• Yamir Moreno et al (BIFI, Universidad de Zaragoza, Zaragoza, Spain)
• Mason A. Porter et al (University of Oxford, Oxford, UK)
• James P. Gleeson et al (University of Limerick, Limerick, Ireland)
• Marc Barthelemy et al (IPhT, CEA, CNRS-URA, Gif-sur-Yvette, France)

Multiplex: Foundational Research on multilevel complex networks and systems

• Multiplex web
• Large EU FP7 FET project, with the participation of 17 European research institutions

Complexitat.CAT: Xarxa catalana per a l'estudi dels sistemes complexos

• Complexitat.CAT web
• Catalan network for the study of complex systems

Collaborators

Current collaborators

• People in Alephsys
• People in PhysComp2
• Alberto Fernández (Universitat Rovira i Virgili, Tarragona, Spain)
• Yamir Moreno (BIFI, Universidad de Zaragoza, Zaragoza, Spain)
• Jesús Gómez-Gardeñes (BIFI, Universidad de Zaragoza, Zaragoza, Spain)
• Javier Borge-Holthoefer (BIFI, Universidad de Zaragoza, Zaragoza, Spain)
• Sandro Meloni (BIFI, Universidad de Zaragoza, Zaragoza, Spain)

Former research group members (URV, Tarragona)

• Alberto Fernández (Universitat Rovira i Virgili, Tarragona, Spain)
• Javier Borge-Holthoefer (BIFI, Universidad de Zaragoza, Zaragoza, Spain)
• Sergi Lozano (IPHES, Tarragona, Spain)
• Jesús Gómez-Gardeñes (BIFI, Universidad de Zaragoza, Zaragoza, Spain)
• José A. Capitán (CAB, INTA-CSIC, Madrid, Spain)
• Juan Acebrón (CEMAT, Universidade Técnica de Lisboa, Portugal)
• Angel Rodríguez-Rozas (Universidade Técnica de Lisboa, Portugal)

Other collaborators

• Alessandro Vespignani (MoBS, Indiana University, Bloomington, USA, and ISI, Torino, Italy)
• Gorka Zamora (DYCOS, University of Potsdam, Potsdam, Germany)
• Nicola Perra (Northeastern University, Boston, USA)
• Belkacem Serrour (LIESP, Université Claude Bernard Lyon 1, Lyon, France)
• Pablo Jensen (IXXI Complex Systems Institute, ENS Lyon, Lyon, France)
• Andrew Teschendorff (UCL Cancer Institute, London, UK)
• Santo Fortunato (Aalto University, Finland)
• Josep Maria Solanes (Universitat de Barcelona, Barcelona, Spain)
• Ricardo Graciani (Universitat de Barcelona, Barcelona, Spain)
• Lluis Garrido (Universitat de Barcelona, Barcelona, Spain)
• Emili Elizalde (Institut de Ciències de l'Espai, CSIC, Barcelona, Spain)