Input congestion, technical ineciency and output reduction in fuzzy data envelopment analysis

Subject Areas : Applied Mathematics

M.  khodabakhshi ¹ (Department of Mathematics, Faculty of Science, Lorestan University, Khorram Abad, Iran.)
N.  Aryavash ² (Department of Mathematics, Faculty of Science, Lorestan University, Khorram Abad, Iran.)

Received: 2015-10-05 Accepted : 2015-10-05 Published : 2012-12-01

Keywords: Fuzzy DEA, Congestion, Output reduction, Technical inefficiency,

Abstract :

During the last years, the concept of input congestion and technical ineff-ciency in data envelopment analysis (DEA), have been investigated by manyresearchers. The motivation of this paper is to present models which obtain thedecreased output value due to input congestion and technical ineciency. More-over, we extend the models to estimate input congestion, technical ineciencyand output reduction in fuzzy data envelopment analysis, by using the conceptof α-cut sets.

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