António Correia received M.Sc. degree in Information and Communication Technologies from the University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal, in 2012. In the last years, he was a Portuguese Government's +E+I Programme fellow, a junior researcher at UTAD, and a Grupo EspÃrito Santo's trainee. Currently, he is a Ph.D. Candidate in Computer Science at UTAD. His research interests are mainly in the field of Human-Computer Interaction (HCI), including the areas of Computer Supported Cooperative Work (CSCW) and collaborative learning, crowdsourcing and human computation, big data, scientometrics, natural language processing, and machine learning. He has authored or coautho