Fernando Martínez-Plumed (Univ. Politècnica Valencia, Spain), Emilia Gomez Gutierrez (Joint Research Centre, EC), Seán Ó Héigeartaigh (Univ. Cambridge, UK) , Jose Hernandez-Orallo (Univ. Politècnica Valencia, Spain) and Giuditta Di Prato ( (Joint Research Centre, EC)