Measures of inefficiency in data envelopment analysis and stochastic frontier estimation

Article Abstract:

Scalar measures of inefficiency in data envelopment analysis (DEA) and stochastic frontier estimation are investigated. Such measures cover all inefficiencies, readily interpretable and easy to use in various contexts. DEA-regression combinations and possible inefficiency measures are subjected to simulation studies. Bias in Stochastic Frontier (SF) regression approaches are identified. Extensions and modifications that can help in developing other inefficiency measures suitable for SF extension to input-specific and multiple output evaluations are suggested.

Data envelopment analysis, Regression analysis, Stochastic approximation

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From efficiency measurement to efficiency improvement: the choice of a relevant benchmark

Article Abstract:

Research into efficiency improvement and how to establish suitable benchmarks for inefficient companies to copy is presented. It is demonstrated that the smallest input-specific contraction measure shows the most similar set of efficient companies that can act as a reference for the inefficient company.

Operations Research, Industrial efficiency, Economic efficiency, Benchmarks, Benchmarking

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