Biblioteca Digital do IPB >
Escola Superior de Tecnologia e Gestão >
Gestão Industrial >
DGI - Artigos em Revistas Indexados ao ISI/Scopus >
Please use this identifier to cite or link to this item:
|Título: ||Efficiency analysis accounting for internal and external non-discretionary factors|
|Autor: ||Camanho, Ana|
Vaz, Clara B.
|Palavras-chave: ||Data envelopment analysis|
|Issue Date: ||2009|
|Citação: ||Camanho, Ana; Portela, Maria; Vaz, Clara B. (2009) - Efficiency analysis accounting for internal and external non-discretionary factors. Computers & Operations Research. ISSN 0305-0548. 36:5, p.1591-1601|
|Resumo: ||This paper develops a method based on data envelopment analysis (DEA) for efficiency assessments
taking into account the effect of non-discretionary factors.
A typology that classifies the non-discretionary factors into two groups is proposed: the factors that
characterize the external conditions where the decision making units (DMUs) operate (external factors),
and the factors that are internal to the production process but cannot be controlled by the decision
makers (internal factors).
This paper proposes an enhanced DEA model that accommodates non-discretionary inputs and outputs
and treats them differently depending on their classification as internal or external to the production
process. This generalized model integrates the previous approaches for dealing with non-discretionary
variables described in the DEA literature. The model defines the efficient frontier based exclusively on
the discretionary variables and internal non-discretionary factors, but the potential peers of each DMU
are restricted to other units facing comparable external conditions (represented by the external nondiscretionary
factors). The peer selection criteria implemented in the DEA model is informed by decision
makers' opinion. The applicability of the model developed is illustrated with a real-world assessment of
|Versão do Editor: ||http://www.sciencedirect.com/science/journal/03050548|
|Appears in Collections:||DGI - Artigos em Revistas Indexados ao ISI/Scopus|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.