Systematized and Path-independent Measurement of Biased Technical Change

Tsunehiro Otsuki ()

No 09-11, Discussion Papers in Economics and Business from Osaka University, Graduate School of Economics

Abstract: The sample-specificity and path-dependence of the data envelopment analysis (DEA) based technical change index as a component of Malmquist indexes prevent us from obtaining overall and systematic information on technical change. This paper develops a pathindependent method to estimate technical change using a systematized set of controlled input- output vectors and visualization of the DEA frontiers. The application to the panel datasets of agricultural production in the Brazil Amazon in 1975-1995 indicates non-Hicks-neutral technical change, with crossings of frontiers in both the 1975-1985 and the 1985-1995 periods. The alternative measure of overall technical change shows that moderate technological progress may have occurred on the whole in 1975-1995. The results also show heterogeneous trends across products. The mean of the sample-specific technical change scores are found to be quite different from the overall technical change measure.

Keywords: Data envelopment analysis; Path dependence; Agricultural intensification (search for similar items in EconPapers)
JEL-codes: D24 O30 (search for similar items in EconPapers)
Pages: 14 pages
Date: 2009-04
New Economics Papers: this item is included in nep-eff
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Persistent link: https://EconPapers.repec.org/RePEc:osk:wpaper:0911

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