Parametric decomposition of the input-oriented Malmquist productivity index: with an application to Greek aquaculture |
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Authors: | Christos?J?Pantzios Giannis?Karagiannis Email author" target="_blank">Vangelis?TzouvelekasEmail author |
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Institution: | (1) Department of Economics, University of Patras, Patras, Greece;(2) Department of Economics, University of Macedonia, Thessaloniki, Greece;(3) Department of Economics, University of Crete, Crete, Greece;; |
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Abstract: | Using a stochastic frontier approach and a translog input distance function, this paper implements the input-oriented Malmquist
productivity index to a sample of Greek aquaculture farms. It is decomposed into the effects of technical efficiency change,
scale efficiency change, input-mix and, technical change, which is further attributed to neutral, output- and input-induced
shifts of the frontier. Implementable expressions for the aforementioned components are obtained using a discrete changes-approach
that is consistent with the usual discrete-form data. Empirical findings indicate that the productivity of the farms in the
sample increased during the period 1995–1999 and it was shaped up primarily by the input mix-effect and technical change. |
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