Benjamin Herfort is researcher at HeiGIT and Heidelberg University. He has recently finished his PhD, for which he investigated questions of representation and data quality in OpenStreetMap from the perspectives of humanitarian and machine learning-assisted mapping in order to map what is not mapped. In his research and work he is furthermore dealing with the temporal evolution of OpenStreetMap data, MapSwipe and information from social media. He is developing open source tools and methods that incorporate geographic information systems for disaster management and humanitarian aid.