A note on evaluating the performances of decision-making units

In this paper, we note on an article by Wang et al. recently published in the Journal of Computational and Applied Mathematics under the title Evaluating the performances of decisionmaking units based on interval efficiencies . We present and prove a theorem for the models introduced by Wang et al. We have revised these models slightly so that we can perform a DEA analysis using the concept of the best and the worst relative efficiencies

Keywords:

Data envelopment analysis , Interval DEA models