“…DEA has been widely used for measuring and benchmarking the relative efficiency of various entities. Selected DEA applications include assessing the efficiency of bank branches (Paradi et al, 2011), advertising (Pergelova et al, 2010), hospitals (Aksezer and Benneyan, 2010), suppliers (Joo et al, 2009), portfolios (Dia, 2009), hotels (Min et al, 2008), railway zones (George and Rangaraj, 2008), telecommunication service providers (Debnath and Ravi Shankar, 2008;Kwon et al, 2008), and utility companies (Goncharuk, 2008).…”