Author/Authors :
F. Hosseinzadeh Lotfi، F. Hosseinzadeh Lotfi نويسنده F. Hosseinzadeh Lotfi, F. Hosseinzadeh Lotfi , Noora، A.A نويسنده Dept. of Math. Sistan and Balochestan University,Iran , , jahanshahloo، G.R نويسنده islamic zad university, , , Gerami، J. نويسنده Department of Mathematics, Science and Research Branch,Islamic Azad University,Tehran. , , Mozaffari، M.R. نويسنده Department of Mathematics, Science and Research Branch,Islamic Azad University,Fars, Iran ,
Abstract :
We suggest a method for finding the non-dominated points of the production possibility
set (PPS) with variable returns to scale (VRS) technology in data envelopment analysis
(DEA). We present a multiobjective linear programming (MOLP) problem whose feasible
region is the same as the PPS under variable returns to scale for generating non-dominated
points. We demonstrate that Pareto solutions of the MOLP produce efficient units in DEA,
and vice versa. We solve the MOLP problem by using a finite number of weights which are
extreme rays of the cone generated by the efficient solutions. We obtain new efficient points
by changing weights, and thus the efficient solutions set is produced.
