Data Envelopment Analysis (DEA) offers a piece-wise linear approximation of the production frontier. The approximation tends to be poor if the true frontier is not concave, eg in case of economies of scale or of specialisation. To improve the flexibility of the DEA frontier and to gain in empirical fit, we propose to extend DEA towards a more general piecewise

data envelopment analysis (DEA), efficiency measurement, piece-wise quadratic approximation
hdl.handle.net/1765/6202
ERIM Article Series (EAS)
Operational Research Society. Journal
Erasmus Research Institute of Management

Kuosmanen, T, & Post, G.T. (2002). Quadratic Data Envelopment Analysis. Operational Research Society. Journal, 1204–1214. Retrieved from http://hdl.handle.net/1765/6202