4.5 Article

Measuring the efficiency of two-stage network processes: A satisficing DEA approach

Journal

JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
Volume 72, Issue 2, Pages 354-366

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/01605682.2019.1671151

Keywords

Stochastic DEA; satisficing DEA; chance-constrained model; two-stage system; efficiency

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The article introduces a two-stage network DEA model with stochastic data to address real-world scenarios involving stochastic behavior. The model is formulated based on probability distribution properties, and discussions on the relationship between the two stages at different confidence levels and aspiration levels are provided. The proposed approach is applied to a real case involving 16 commercial banks in China to demonstrate its applicability.
Regular network data envelopment analysis (DEA) models deal with evaluating the performance of a set of decision-making units with a two-stage construction in the context of a deterministic data set. In the real world, however, observations may display a stochastic behavior. To the best of our knowledge, despite the existing research done with different data types, studies on two-stage processes with stochastic data are still very limited. This article proposes a two-stage network DEA model with stochastic data. The stochastic two-stage network DEA model is formulated based on the satisficing DEA models of chance-constrained programming and the leader-follower concepts. According to the probability distribution properties and under the assumption of the single random factor of the data, the probabilistic form of the model is transformed into its equivalent deterministic linear programming model. In addition, the relationship between the two stages as the leader and the follower, respectively, at different confidence levels and under different aspiration levels, is discussed. The proposed model is applied to a real case concerning 16 commercial banks in China in order to confirm the applicability of the proposed approach.

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