A note on ‘A decision model for ranking suppliers in the presence of cardinal and ordinal data, weight restrictions, and nondiscriminatory factors’

Farzipoor Saen (2009) proposed a method based on Data Envelopment Analysis (DEA) for selecting the best supplier in the presence of cardinal and ordinal data, weight restrictions, and non‐discriminatory factors. In the present note, we show that the DEA method proposed by Farzipoor Saen (2009) cannot be used for selecting the best supplier in the presence of imprecise data. It is also shown that there are computational errors in calculating the amounts of the preference intensity parameter and the ratio parameter in Farzipoor Saen’s paper.