a-Preference-ratio Mapping and a-Preference-ratio Methods
a-偏比映射和a-偏比法

With the help of the preference-ratio measure relative to a pair of alternatives for an individual in group decision making, the a-preference-ratio mapping is set up, and it is proved that the mapping satisfies five axioms in paperYuda Ha,J.Sys.Sci.& Math.Scis(2003)] and anonymous condition. Finally, a group sequencing is proposed by means of a-preference-ratio mapping.