“…The DEA can be applied to various areas like Internet companies of various industries (Cao & Yang, 2011), Internet marketing strategies of hotel companies (Sigala, 2003), the banking sector (Dong, Hamilton, & Tippett, 2014), hospitals (Guerra, de Souza, & Moreira, 2012), the agriculture sector (Aktan & Samut, 2013), etc. Other researchers have used it as an instrument for sustainability analysis (Chang, Kuo, & Chen, 2013;Korhonen & Luptacik, 2004;Zhang, Bi, Fan, Yuan, & Ge, 2008).…”