Meng, Wei; Zhang, Daqun; Qi, Li; Liu, Wenbin - In: Omega 36 (2008) 6, pp. 950-957
It is well known that the discrimination power of data envelopment analysis (DEA) models will be much weakened if too many input or output indicators are used. It is a dilemma if decision makers wish to select comprehensive indicators, which often have some hierarchical structures, to present a...