Maribel Acosta is a PhD student at the Institute AIFB in the Karlsruhe Institute of Technology (KIT). She holds a M.Sc. from Universidad Simón Bolívar (Caracas, Venezuela) with specializations in Databases and Semantic Web technologies. She is currently focused on researching the enhancement of Semantic Web technologies with human-based computation, particularly applied to SPARQL query execution. Her research interests also include adaptive techniques for Linked Data management and federated query processing. Maribel has been involved in organizing and presenting several tutorials at the Extended Semantic Web Conference (ESWC), focused on semantic data management as well as crowdsourcing systems.