INRIA Grenoble-Rhône-Alpes, Montbonnot, France. sara.berthoumieux@inria.fr|INRIA Grenoble-Rhône-Alpes, Montbonnot, France. sara.berthoumieux@inria.fr|INRIA Grenoble-Rhône-Alpes, Montbonnot, France. sara.berthoumieux@inria.fr|INRIA Grenoble-Rhône-Alpes, Montbonnot, France. sara.berthoumieux@inria.fr|INRIA Grenoble-Rhône-Alpes, Montbonnot, France. sara.berthoumieux@inria.fr