A new family of models with generalized orientation in data envelopment analysis

V. J. Bolos, R Benitez and V. Coll-Serrano

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Abstract: In the framework of data envelopment analysis, we review directional models \citep{Chambers1996, Chambers1998, Briec1997} and show that they are inadequate when inputs and outputs are improved simultaneously under constant returns to scale. Conversely, we introduce a new family of quadratically constrained models with generalized orientation and demonstrate that these models overcome this limitation. Furthermore, we extend the Farrell measure of technical efficiency using these new models. Additionally, we prove that the family of generalized oriented models satisfies some desired monotonicity properties. Finally, we show that the new models, although being quadratically constrained, can be solved through linear programs in a fundamental particular case.

Date: 2025-12
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Published in International Transactions in Operational Research (2026, early access)

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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2512.02630

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