This volume contains proceedings of the Sixth International Conference on Evolutionary Computation Theory and Applications (ECTA 2014), which was sponsored by the Institute for Systems and Technologies of Information, Control and Communication (INSTICC) and co-organized by Sapienza University of Rome. This conference was held in Rome, Italy. IJCCI was technically co-sponsored by IEEE Computational Intelligence Society, co-sponsored by IFAC – International Federation of Automatic Control and held in cooperation with the ACM SIGART- ACM Special Interest Group on Artificial Intelligence, AAAI - Association for the Advancement of Artificial Intelligence, APNNA - Asia Pacific Neural Network Assembly, EUSFLAT- European Society for Fuzzy Logic and Technology, International Neural Network Society and the International Fuzzy Systems Association. In ECTA, modeling and implementation of bio-inspired systems namely on the evolutionary premises, both theoretically and in a broad range of
application fields, is the central scope. Considered a subfield of computational intelligence focused on combinatorial optimisation problems, evolutionary computation is associated with systems that use computational models of evolutionary processes as the key elements in design and implementation, i.e. computational techniques which are based to some degree on the evolution of biological life in the natural world. A number of evolutionary computational models have been proposed, including evolutionary algorithms, genetic algorithms, the evolution strategy, evolutionary programming, swarm intelligence and artificial life. ECTA 2014 received 68 paper submissions from 34 countries in all continents, of which 21% were presented as full papers. The high quality of the papers received imposed difficult choices in the review process. To evaluate each submission, a double blind paper evaluation method was used: each paper was reviewed by at least two experts from the independent international Program Committee, in a double-blind review process, and most papers had three reviews or more. Moreover, the conferences also featured a number of keynote lectures delivered by internationally well known experts, namely: Marie-Jeanne Lesot ( Université Pierre et Marie Curie - LIP6, France), Danil Prokhorov ( Toyota Tech Center, United States), Bernard De Baets ( Ghent University, Belgium) and Cesare Alippi, Politecnico di Milano, Italy. The meeting was also complemented with a Doctoral Consortium on Computational Intelligence chaired by Prof. Antonello Rizzi. The best contributions to the conference and the best student submissions were distinguished with awards based on the best combined marks of paper reviewing, as assessed by the Program Committee, and the quality of the presentation, as assessed by session chairs at the conference venue. All presented papers will be submitted for indexation by Thomson Reuters Conference Proceedings Citation Index (ISI), INSPEC, DBLP, EI (Elsevier Index) and Scopus, as well as being made available at the SCITEPRESS Digital Library. Additionally, a short list of presented papers will be selected to be expanded into a forthcoming book of IJCCI Selected Papers to be published by Springer-Verlag. Also, a post-conference special issue of the Springer's SCI Series book is planned for publication of an extended version of a restricted number of original high quality papers presented during the IJCCI 2014. Building an interesting and successful program for the conference required the dedicated effort of many people. We would like to express our thanks, first of all, to all authors including those whose papers were not included in the program. We would also like to express our gratitude to all members of the Program Committee and auxiliary reviewers, who helped us with their expertise and valuable time. Furthermore, we thank the invited speakers for their invaluable contribution and for taking the time to synthesize and prepare their talks. Moreover, we gratefully acknowledge the professional support of the INSTICC team for all organizational processes.
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