کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
479134 | 1446193 | 2007 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Avoiding infeasibility in DEA models with weight restrictions Avoiding infeasibility in DEA models with weight restrictions](/preview/png/479134.png)
The flexibility of weights assigned to inputs and outputs is a key aspect of DEA modeling. However, excessive weight variability and implausible weight values have led to the development of DEA models that incorporate weight restrictions, reflecting expert judgment. This in turn has created problems of infeasibility of the corresponding linear programs. We provide an existence theorem that establishes feasibility conditions for DEA multiplier programs with weight restrictions. We then propose a linear model that tests for feasibility and a nonlinear model that provides minimally acceptable adjustments to the original restrictions that render the program feasible. The analysis can be applied to restrictions on weight ratios, or to restrictions on virtual inputs or outputs.
Journal: European Journal of Operational Research - Volume 181, Issue 2, 1 September 2007, Pages 956–966