Abstract
Non-homogeneous structures are ubiquitous in airline operations and it is a very important issue to estimate the energy efficiencies of the non-homogeneous airlines. In this paper, we consider three non-homogeneous structures: non-homogeneous outputs structure, non-homogeneous inputs structure and non-homogeneous inputs & non-homogeneous outputs structure, and build a new method to measure the dynamic energy efficiencies of airlines with these three structures. Then we construct a dynamic DEA model to conduct an empirical study on 25 airlines during 2012–2019, and compare the results with those of traditional method to verify the improvement effect and reasonable feasibility of the proposed method.
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