“…In many cases, the user model is initially 'Empty,' and then slowly created throughout the users' interactions with the system. Few multi-criteria recommendation systems use some 'Stereotyping' (demographic) technique, some initial 'Training set,' or some other 'Heuristic' method in order to build [4,17,54,109] Value-focused models [5,20,27,28,31,37,42,45,46,48,52,58,63,64,72,73,76,79,80,82,95,96,99,100,101,113,114] Optimization models [83,103] Outranking relations [74,75,112] Type…”