Dr. Gianluca Demartini is a Lecturer in Data Science at the Information School of the University of Sheffield, UK. Previously, he was post-doc at the eXascale Infolab at U. Fribourg, visiting researcher at UC Berkeley, junior researcher at the L3S Research Center, and intern at Yahoo! Research. His research interests include Web Information Retrieval, Semantic Web, and Human Computation. He obtained a Ph.D. in Computer Science at the Leibniz University of Hannover in Germany.