Abstract
The variable returns to scale data envelopment analysis (DEA) model is developed with a maintained hypothesis of convexity in input-output space. This hypothesis is not consistent with standard microeconomic production theory that posits an S-shape for the production frontier, i.e. for production technologies that obey the Regular Ultra Passum Law. Consequently, measures of technical efficiency assuming convexity are biased downward. In this paper, we provide a more general DEA model that allows the S-shape.
Original language | English |
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Journal | European Journal of Operational Research |
Volume | 235 |
Issue number | 3 |
Pages (from-to) | 798–809 |
ISSN | 0377-2217 |
DOIs | |
Publication status | Published - 16. Jun 2014 |
Keywords
- Convex hull estimation
- Data envelopment analysis (DEA)
- Isoquant estimation
- S-shaped production function