Amin, Gholam R.; Emrouznejad, Ali; Rezaei, S. - In: European Journal of Operational Research 215 (2011) 2, pp. 498-501
This paper clarifies the role of alternative optimal solutions in the clustering of multidimensional observations using data envelopment analysis (DEA). The paper shows that alternative optimal solutions corresponding to several units produce different groups with different sizes and different...