Djamel Eddine Khelladi is a CNRS researcher in the IRISA research lab in the DIVERSE team, Université Rennes. Before that he was a Postdoctoral researcher in the Institute for Software Systems Engineering (ISSE) at the Johannes Kepler University Linz. He hold a Ph.D. in the Laboratoire d’Infromatique de Paris 6 (LIP6) at the Sorbonne University (previously University of Piere et Marie Curie – UPMC).