EFFICIENCY IN FUZZY PRODUCTION POSSIBILITY SET

Abstract

The existing Data Envelopment Analysis models for evaluating <br />the relative e ciency of a set of decision making units by using various inputs <br />to produce various outputs are limited to crisp data in crisp production possibility <br />set. In this paper, rst of all the production possibility set is extended <br />to the fuzzy production possibility set by extension principle in constant return <br />to scale, and then the fuzzy model of Charnes, Cooper and Rhodes in <br />input oriented is proposed so that it satis es the initial concepts with crisp <br />data. Finally, the fuzzy model of Charnes, Cooper and Rhodes for evaluating <br />decision making units is illustrated by solving two numerical examples.