| Article ID: | iaor19911072 |
| Country: | Netherlands |
| Volume: | 9 |
| Issue: | 6 |
| Start Page Number: | 403 |
| End Page Number: | 405 |
| Publication Date: | Nov 1990 |
| Journal: | Operations Research Letters |
| Authors: | Iqbal Ali Agha, Seiford Lawrence M. |
| Keywords: | statistics: data envelopment analysis |
Conditions are established under which DEA models are translation invariant. Specifically, an affine displacement does not alter the efficient frontier for models incorporating the convexity constraint. This affords a ready solution to the problems of scaling and the presence of zero values which arise in Data Envelopment Analysis.