4 documents found, page 1 of 1
An improvement on the Tracy and Chen model 'A generalized model for weight rest...
Ana Camanho; M. Khalili; M. R. Alirezaee; M .C. Portela
The measurement of relative efficiency using data envelopment analysis with ass...
Ana Camanho; M. Khalili; M. R. Alirezaee; M . C. Portela
An improvement on the Tracy and Chen model "A generalized model for weight rest...
M. Khalili; A. S. Camanho; M.C. A. S. Portela; M.R. AlirezaeeRecently Tracy and Chen presented a parametric DEA model (PDEA) to assess relative efficiency in the presence of a generalized form of linear weight restrictions. This paper proposes a modification to the PDEA model that avoids the need to resort to searching algorithms to estimate efficiency, and assures that the correct efficiency scores are obtained in a single stage using mathematical programming solvers. T...
The measurement of relative efficiency using data envelopment analysis with ass...
M. Khalili; A. S. Camanho; M. C. A. S. Portela; M. R. AlirezaeeThe most popular weight restrictions are assurance regions (ARs), which impose ratios between weights to be within certain ranges. ARs can be categorized into two types: ARs type I (ARI) and ARs type II (ARII). ARI specify bounds on ratios between input weights or between output weights, whilst ARII specify bounds on ratios that link input to output weights. DEA models with ARI successfully maximize relative ef...