“…The measurement of bank efficiency using nonparametric techniques such as data envelopment analysis (DEA) remains a topical issue in the literature (e.g., Ferrier and Lovell, 1990; Berg et al., 1991, 1993; Berger and Humphrey, 1992, 1997; Fukuyama and Weber 2009a, 2009b, 2010; Sufian, 2010; Holod and Lewis, 2011; Hemmati et al. 2013; Avkiran, 2015; Shyu et al., 2015; Wanke et al., 2016; Kweh et al., 2018; Nourani et al., 2019). For instance, Avkiran (2015) illustrates a dynamic network DEA in commercial banks operating in China.…”