Bernard Vatant is a former high school mathematics teacher, graduated in 1975 from ENSET (Cachan, France). His research interests have long ago been in knowledge representation and organization, singularly applied to science popularization (astronomy). He's been working since the end of Y2000 as a consultant for Mondeca, where he participates in the development of Topic Maps and vocabularies, and coordinates the SemanTopic Map project. He has been a participating member in the XTM Authoring Group, and is founding member and current chair of the OASIS Topic Maps Published Subjects Technical Committee.