Dr. Vangelis Karkaletsis is Research Director at NCSR "Demokritos", and head of the Software & Knowledge Engineering Lab (SKEL) at IIT. His research interests are in the areas of content analysis, big data management, knowledge representation, human-machine interaction. He was scientific manager of the FP7-ICT project SemaGrow on the efficient discovery of web resources, site manager of the CLARIN-EL infrastructure, the Greek part of the European CLARIN e-infrastructure, and currently of the follow-up project APOLLONIS. He was scientific manager of the H2020 project Your Data Stories on the analysis of open governmental data and their linking to social web, site manager for the H2020 Big Data Europe project for the development of a Big Data Integrator platform, coordinator of the H2020 Radio project on the use of robots in assisted living environments. Currently he coordinates the H2020 DARE project on big data management to support large-scale European e-infrastructures. He is also responsible for two Google Digital News Initiative projects, Storybot and Open Journalism. He has organized international summer schools, workshops and conferences. He is director of the MSc program on Data Science which runs jointly with the University of Peloponnese.