Interval efficiency with discretionary and nondiscretionary variable

Discretionary models of data envelopment analysis (DEA) assume that all inputs are discretionary, i. e controlled by the management of each decision making unit (DMU) and varied at its discretion. However there may exist exogenously fixed or nondiscretionary inputs or outputs that are beyond the control of a DMUs management. in this paper we proposed bounded DEA model at presence discretionary and nondiscretionary variable.

Keywords:

Interval efficiency , discretionary variable , DEA models