As the CCR primal model places no restriction on the weights other than a lower bound of epsilon, it is not rare for a unit to be rated efficient at the expense of having a very uneven distribution of weights where some or most of the factors have been practically ignored. To remedy the situation, additional restrictions on weights may be used.
Aston DEA Course – Two days training
PIM-DEA software
Performance Improvement Management Software - PIM-DEA software
Performance Measurement with Fuzzy Data Envelopment Analysis, by: Ali Emrouznejad, and Madjid Tavana
Applied Operational Research with SAS, including free DEA software
Managing Service Productivity (Uses of Frontier Efficiency Methodologies and MCDM for Improving Service Performance), by: Ali Emrouznejad, and Emilyn Cabanda
Handbook of Research on Strategic Performance Management and Measurement Using Data Envelopment Analysis, by: Ibrahim H. Osman , Abdel Latef Anouze and Ali Emrouznejad