TOPSIS method (matlab)

   This article draws on mathematical modeling Teacher Qingfeng's courseware and ideas , You can click the view link to view the video explanation of teacher Qingfeng ： Qingfeng mathematical modeling ：https://www.bilibili.com/video/BV1DW411s7wi

One 、 Case background

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  Two 、 The basic idea

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  3、 ... and 、 computational procedure

Step1: Forward the original matrix

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 Step2: Standardization of forward matrix

Standardization principle ：

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  The standardized matrix is ：

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  Step3: Calculate the score and normalize it

Calculate the non normalized score principle ：

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Calculate the UN normalized score （  notes ： The default weights of indicators here are equal , See Entropy weight optimization TOPSIS（MATLAB））： 

Visualize the normalized score ：

When there is only one weight to calculate the score ：

  Four 、 Model program

See the folder for the model program  topsis.m

5、 ... and 、 other

Be careful ： Here TOPSIS Equal weight ！ In practice, the entropy weight method is used to obtain the weight , recompute , see Entropy weight optimization TOPSIS（MATLAB）