A note on a variant of radial measure capable of dealing with negative inputs and outputs in DEA

•Variants of the radial model (VRM) by Cheng et al. (2013) need qualification.•These VRM maintain proportionality only under certain conditions.•This qualified result is based on an earlier, more general analysis. The recent contribution by Cheng et al. (2013) presents a variant of the traditional r...

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Veröffentlicht in:	European journal of operational research 2014-04, Vol.234 (1), p.341-342
Hauptverfasser:	Kerstens, Kristiaan, Van de Woestyne, Ignace
Format:	Artikel
Sprache:	eng
Schlagworte:	Data envelopment analysis Dealing Economics and Finance Humanities and Social Sciences Input output analysis Negative data Operational research Proportional interpretation Studies
Online-Zugang:	Volltext
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