The Extension Method to Endow with Weight Based on the Variance of Dependent Degree

The extension evaluation method has been a more successful system one to evaluate the alternatives,schemes and strategies.For an integrated evaluation problem with several characteristics,it is a key to endow with weights.To utilize each dependent degree of the basic element's characters,this paper proposes the objective method to get weights based on their variance,and introduces the integrated approach to the subjective and objective ones.The weights by the methods are obtained through the dependent degree,and need not deal with the datum in advance.It is different from previous methods,by which weights are directly obtained from the values of characteristics.The method can enlarge the distance among integrated dependent degrees as possible as they can,and avoid the impact of sensitivity of datum.To utilize the proposed methods,the evaluated result is more intuitive and the weights are system ones.