“…Step 4: Calculating the positive and negative ideal solutions. According to Equations (14) and (15), the positive and negative ideal solutions could be obtained, as shown in Equations (19) and (20). Z + = (0.012, 0.019, 0.033, 0.055, 0.004, 0.016, 0.021, 0.012, 0.023, 0.012, 0.010) (19) Z − = (0.010, 0.023, 0.051, 0.048, 0.009, 0.020, 0.028, 0.014, 0.040, 0.024, 0.013)…”