These transactions publish research in computer-based methods of computational collective
intelligence (CCI) and their applications in a wide range of fields such as the Semantic Web
social networks and multi-agent systems. TCCI strives to cover new methodological theoretical
and practical aspects of CCI understood as the form of intelligence that emerges from the
collaboration and competition of many individuals (artificial and or natural). The application
of multiple computational intelligence technologies such as fuzzy systems evolutionary
computation neural systems consensus theory etc. aims to support human and other collective
intelligence and to create new forms of CCI in natural and or artificial systems. This 15th
issue contains extended and revised versions of the best papers presented at the International
Conference on Practical Applications on Agents and Multi-Agent Systems (PAAMS 2012 and PAAMS
2013) held in Salamanca Spain.
