How to deal with S-shaped curve in DEA

Kaoru Tone and Miki Tsutsui
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Kaoru Tone: National Graduate Institute for Policy Studies
Miki Tsutsui: Central Research Institute of Electric Power Industry

No 13-10, GRIPS Discussion Papers from National Graduate Institute for Policy Studies

Abstract: In DEA we are often puzzled by the big difference in CRS and VRS scores, and by the convex production possibility set syndrome in spite of the S-shaped curve often observed in many real data. In this paper we perform a challenge to these subjects.

Pages: 33 pages
Date: 2013-06
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