%0 Journal Article %T The Use of YanaiĄ¯s Generalized Coefficient of Determination to Reduce the Number of Variables in DEA Models %A Mauricio Benegas %J American Journal of Operations Research %P 187-200 %@ 2160-8849 %D 2017 %I Scientific Research Publishing %R 10.4236/ajor.2017.73013 %X This paper proposes a new method to reduce the dimensionality of input and output spaces in DEA models. The method is based on YanaiĄ¯s Generalized Coefficient of Determination and on the concept of pseudo-rank of a matrix. In addition, the paper suggests a rule to determine the cardinality of the subset of selected variables in a way to gain the maximal discretionary power and to suffer a minimal informational loss. %K DEA %K YanaiĄ¯s Generalized Coefficient of Determination %K Pseudo-Rank %K Dimension Reduction %K Improving Discrimination %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=76246