Distance-based attribute value recombining algorithm

In classical rough set, the attribute must be kept, as long as one of its value need to keep. However, there is some intrinsic relation between some values which belongs to different attributes. Those values can be combined to a ´new´ on. This paper, first unfold all of attributes according to their values, then based on distance in VPRS, recombining them which belongs to different attributes, and make all of ´new´ attributes become Boolean-valued attributes. Therefore, the process of reduction be simplified , another, some redundant attribute values ,even some redundant attributes that be kept in classical rough set, also be eliminated.