Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/11769
Título: Malmquist-type indices in the presence of negative data: an application to bank branches
Autor: Portela, Maria
Thanassoulis, Emmanuel
Palavras-chave: Directional distance functions
Negative data in DEA
Malmquist indices
Luenberger indicators
Meta-frontier
Bank branches
DEA
Data: 2010
Editora: Elsevier
Citação: PORTELA, Maria; THANASSOULIS, Emmanuel - Malmquist-type indices in the presence of negative data: An application to bank branches. Journal of Banking & Finance. ISSN 0378-4266. Vol. 34, n.º7 (2010), p. 1472–1483
Resumo: In this paper we develop an index and an indicator of productivity change that can be used with negative data. For that purpose the range directional model (RDM), a particular case of the directional distance function, is used for computing efficiency in the presence of negative data. We use RDM efficiency measures to arrive at a Malmquist-type index, which can reflect productivity change, and we use RDM inefficiency measures to arrive at a Luenberger productivity indicator, and relate the two. The productivity index and indicator are developed relative to a fixed meta-technology and so they are referred to as a meta-Malmquist index and meta-Luenberger indicator. We also address the fact that VRS technologies are used for computing the productivity index and indicator (a requirement under negative data), which raises issues relating to the interpretability of the index. We illustrate how the meta-Malmquist index can be used, not only for comparing the performance of a unit in two time periods, but also for comparing the performance of two different units at the same or different time periods. The proposed approach is then applied to a sample of bank branches where negative data were involved. The paper shows how the approach yields information from a variety of perspectives on performance which management can use.
Peer review: yes
URI: http://hdl.handle.net/10400.14/11769
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0378426610000130
Aparece nas colecções:FEG - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review



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