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| Tekijä: | Halme, M. Joro, T. Koivu, M. |
| Otsikko: | Dealing with interval scale data in data envelopment analysis |
| Lehti: | European Journal of Operational Research
2002 : FEB, VOL. 137:1, p. 22-27 |
| Asiasana: | SCALING BANKS ACCOUNTS |
| Kieli: | eng |
| Tiivistelmä: | After its introduction data envelopment analysis (DEA) has gained wide popularity producing numerous applications' reports as well as articles in scientific journals. In many applications interval scale variables like profit and change in different variables (like sales, loans, etc.) have been used as inputs and/or outputs. Problems have been noticed, at the latest, when the variables have taken negative values. This paper considers the problem of interval scale data in the most widely used models of data envelopment analysis (DEA), the CCR and BCC models. Radial models require inputs and outputs measured on the ratio scale. The authors' focus is on how to deal with interval scale variables especially when the interval scale variable is a difference of two ratio scale variables like profit or the decrease/increase in bank accounts. |
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