Abstract
Cook and Zhu [Cook, W.D., Zhu, J., 2007. Classifying inputs and outputs in data envelopment analysis. European Journal of Operational Research 180, 692-699] introduced a new method to determine whether a measure is an input or an output. In practice, however, their method may produce incorrect efficiency scores due to a computational problem as result of introducing a large positive number to the model. This note introduces a revised model that does not need such a large positive number.
| Original language | English |
|---|---|
| Pages (from-to) | 358-360 |
| Number of pages | 3 |
| Journal | European Journal of Operational Research |
| Volume | 198 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Oct 1 2009 |
| Externally published | Yes |
Keywords
- Computational error
- Data envelopment analysis
- Efficiency
- Flexible inputs
- Flexible outputs
- Variable status
ASJC Scopus subject areas
- General Computer Science
- Modelling and Simulation
- Management Science and Operations Research
- Information Systems and Management