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 twentieth issue contains 11 carefully selected and
revised contributions.