2017
DOI: 10.1007/s10479-017-2423-5
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On selecting directions for directional distance functions in a non-parametric framework: a review

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Cited by 63 publications
(26 citation statements)
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“…In which β (≥0) is the inefficiency score of the evaluated province and However, for the application of DDF based on DEA technique, the directional vectors are usually arbitrarily selected by the researchers in advance (Wang et al, 2017;Wang et al, 2018a).…”
Section: Production and Environmental Technologies And Endogenous Effmentioning
confidence: 99%
“…In which β (≥0) is the inefficiency score of the evaluated province and However, for the application of DDF based on DEA technique, the directional vectors are usually arbitrarily selected by the researchers in advance (Wang et al, 2017;Wang et al, 2018a).…”
Section: Production and Environmental Technologies And Endogenous Effmentioning
confidence: 99%
“…DDF has a clear interpretation, which corresponds to DMU 0 moving along a direction given by a directional vector 0 g (Chambers et al 1996). Wang et al (2017) classify DDF approaches depending on whether the directional vector is determined endogenously, using a certain criterion, or not. Thus, for example, in Zofio et al (2013) the directional vector is computed endogenously so that the target is allocative efficient while in Lee (2016)…”
Section: Basic Ddf Approachmentioning
confidence: 99%
“…As mentioned in the introduction, the directional vector used in DDF can be exogenous (i.e. given a priori) or endogenously determined based on the own data (Wang et al 2017). Among the latter methods one can use the approach proposed in Zofío et al (2013), provided that the input and output unit prices are available.…”
Section: Endogenous Largest Improvement Ddf Approachmentioning
confidence: 99%
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“…All of these methods seek to measure the impact of undesirable outputs on TE. Of the three approaches, the directional distance function approach has emerged in recent years as the main method for measuring TE with undesirable outputs included, because it avoids the technical problems outlined above [13][14][15][16][17][18][19][20][21][22][23]. However, to correct the possible potential estimated bias of TE under the directional distance function, a bootstrap algorithm was proposed by Simar et al [24].…”
Section: Introductionmentioning
confidence: 99%