TOPSIS （Technique for Order Preference by Similarity to an Ideal Solution ）法是C.L.Hwang和K.Yoon于1981年首次提出，TOPSIS法根据有限个评价对象与理想化目标的接近程度进行排序的方法，是在现有的对象中进行相对优劣的评价。(The TOPSIS (Technique for Order Preference by Similarity to an Ideal Solution) method was first proposed by CLHwang and K. Yoon in 1981. The TOPSIS method is based on how close a limited number of evaluation objects are to the idealized target.The relative merits of the object are evaluated.)