Thomas Hartmann

Dr. Thomas Hartmann is a researcher at the GESIS Leibniz Institute for Social Sciences, focusing on RDF validation and semantic technologies. He holds a M.Sc. in Computer Science from TU Munich and a PhD from Karlsruhe Institute of Technology (KIT), where his thesis developed a validation framework for RDF-based constraint languages under the supervision of Prof. York Sure-Vetter and Prof. Kai Eckert.

His research revolves around improving data quality through RDF validation mechanisms, constraint language design, and metadata standards. He contributes to initiatives like the DDI Alliance (DDI-RDF Discovery Vocabulary) and the W3C RDF Data Shapes Working Group. Key areas include semantic web applications in social sciences, cross-domain data integration, and ontology engineering based on XML schemas.

Thomas actively participates in editorial roles for DCMI's RDF Application Profiles Task Group and has published extensively in venues such as Semantic Web Journal, ISWC, and WWW conferences. His work bridges theoretical validation frameworks with practical implementations in social science data management, emphasizing interoperability and standardization.

Notable contributions include the Physical Data Description specification (DDI Alliance) and foundational research on leveraging DDI models for linked statistical data. His collaborations span academic institutes like GESIS, KIT, and international organizations focused on metadata interoperability.