Guillaume Touya is a senior researcher, at Géodata Paris, IGN France (the French mapping agency) and Univ Gustave Eiffel. He holds a PhD and habilitation in GI science from Paris-Est University. His research interests focus on automated cartography, map generalization and volunteered geographic information. He is particularly interested in research approaches to multi-scale cartography that mix automated cartography, spatial cognition and human-computer interaction issues. He is the principal investigator of the recent LostInZoom project, funded by the Europe Research Council (ERC) (2021-2026). He is the chair of the ICA (International Cartographic Association) commission on multi-scale cartography.