Revised TOPSIS Method Based on Vertical Projection Distance -Vertical Projection Method
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In allusion to the drawback of TOPSIS method,this paper puts forward a revised method:vertical projection method.First TOPSIS method is Reviewed.Then vertical projection distance is defined .Computation ,nature of vertical projection as well as relationship between vertical projection distance and the relative closeness to the ideal solutions is discussed.Afterwards simplified compute procedure of vertical projection method is presented.Vertical projection method is applyed to a real example.In the end, the merit of vertical projection method is summarized.