IMPROVING THE SELECTION SYMMETRIC WEIGHTS AS A SECONDARY GOAL IN DEA CROSS-EFFICIENCY EVALUATION

Subject Areas : International Journal of Mathematical Modelling & Computations

Ghasem Tohidi ¹ , Maryam Khodadadi ² , Elham Rostamiyan ³

1 - Iran, Islamic Republic of
2 - Iran, Islamic Republic of
3 - Iran, Islamic Republic of

Received: 2016-04-15 Accepted : 2016-04-15 Published : 2013-03-21

Keywords: DEA, symmetric weights, secondary goal, cross-efficiency,

Abstract :

Recently, some authorsproposed the use of symmetric weightsfor computing the elements of cross-efficiency matrix. In spite ofthe fact that the proposed method decreases the number of zeroweights, a large number of zero weights may still exist among inputand output symmetric weights. To decrease the number of input andoutput symmetric weights, this paper improves the proposed secondarygoal model. The improved method generates more acceptable results inthe ranking process of the decision making units (DMUs). Finally, anumerical example is provided to illustrate the applicability of theproposed method.