Abstract: The purpose of this Mini-Symposium is to establish an environment for the presentation and discussion of papers that aim to analyse large data repositories. Topics of interest include contributions based on machine learning algorithms, data mining, text mining, computational intelligence and metrics based on network analysis. The Mini-Symposium is thought to bring together researchers, students and professionals from this field or related areas and to provide a forum for the dissemination of original research results, new ideas and practical experiments, which encompass both theory and practices.