Alain Vagner obtained in 2003 his Master’s degree in Computer Science from the IAEM-Lorraine Doctoral School in Nancy (France). This training, focused on numerical and symbolic algorithmic systems and logics, led to a research work at the LITA in Metz (“Graph algorithms and NP-Completeness” research unit) in the field of the parallel resolution of logical satisfiability problems and its main applications to cryptography and cryptanalysis. Alain Vagner joined the Centre de Recherche Public Henri Tudor in Luxembourg in 2004 as a member of the "Software Engineering" research unit, where he is currently member of the steering committee. He mainly managed and contributed to several projects related to semantic Web, interoperability, software architecture, Human-Computer Interaction. He currently manages the "User-Centric Design" service line, dealing with topics such as HCI, usability, personalization, profiling, ubiquitous computing. He is also the co-founder of the Luxembourg-France chapter of the Usability Professionals' association.