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Communication Dans Un Congrès Année : 2018

How to model technologies accounting for undesirable outputs? A numerical comparison of nonparametric approaches

K Hervé Dakpo
Philippe Jeanneaux

Résumé

In this paper we compare the existing non‐parametric approaches that account for undesirable outputsin technology modelling. The approaches are grouped based on Lauwers (2009)’s seminal three‐groupclassification, and extended to a fourth group of recent models grounded on the estimation of severalsub‐technologies depending on the type of the outputs. With this fourth group of models, we providea new complete picture of pollution‐technologies modelling in the non‐parametric framework of DEA.We provide a numerical comparison of the most recent models: the frontier eco‐efficiency model; theapproach based on materials balance principle and the estimation of iso‐environmental lines; and theby‐production model with two sub‐technologies extended with dependence constraints between thesub‐technologies. The results reveal that, under constant emission factors and one undesirable output,the three models considered yield the same efficiency score for each decision‐making unit. However,when we assume different emission factors across decision‐making units, the extended by‐productionmodel yields intermediate results between the different models. We have also proposed amodification of the model based on materials balance principles to account for non‐constant emissionfactors across decision‐making units.
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Dates et versions

hal-01811438 , version 1 (08-06-2018)

Identifiants

  • HAL Id : hal-01811438 , version 1
  • PRODINRA : 430628

Citer

K Hervé Dakpo, Philippe Jeanneaux, Laure Latruffe. How to model technologies accounting for undesirable outputs? A numerical comparison of nonparametric approaches. 2. Santander Chair International Workshop of Efficiency and Productivity, Universidad Miguel Hernández [Elche]. ESP., Jun 2018, Alicante, Espagne. ⟨hal-01811438⟩
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