But although a lot of interest the number of preferred ratings, an average high deviation is larger, both members within a group to meet the recommendation it is hard to deliver results.
However, this high average surface deviation of even greater preference is a preferred number of much concern, it is difficult to provide a recommendation result satisfying all group members.
however, the high number of the first concern, but awareness of the deviation is large, the members of the group to meet all of the recommended results, it is difficult to provide.