“…Regarding the DEA approach, one could apply the variable returns to scale assumption (Banker, 1984), the cost/profit measures (Ngo et al, 2019b;Pilar et al, 2018), the fuzzy approach (Boubaker et al, 2020;Nandy & Singh, 2021), or the Euclidean distance (Hammami et al, 2020) to measure the DEA efficiency in different settings. Regarding ML analytics, the ensemble approach (Belhadi et al, 2021) and other hybrid ML combinations (e.g., combining LASSO and NN) could also be used. Finally, the extension of this CSW-RA-DEA to other industries with big data, such as banking and finance (Tsai & Chen, 2010), healthcare (Misiunas et al, 2016), agriculture (Nandy & Singh, 2021), or energy (Khezrimotlagh et al, 2019), could help increase our understanding of the role of DEA in such fields.…”