Malmquist indexes using a geometric distance function (GDF)

• Autor(es): Portela, Maria Conceição A. S. ; Thanassoulls, Emmanuel
• Data: 2004
• Identificador Persistente: http://hdl.handle.net/10400.14/5284
• Origem: Veritati - Repositório Institucional da Universidade Católica Portuguesa
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

Traditional approaches to calculate anal factor pmthwtivity change through Malmquist indexes rely on distance fin chaos. In this paper we show that the use of distance Junctions as a means to calculate total factor productivity change 'nth, introduce some bias in the analysis. and tnerefire tee propose a procedure that calculates total factor productivity change through observed values only. Our total factor productivity change is then decomposed into efficiency change, technological change, and a residual effimt. This decomposition makes use of a non-oriented measure in (E yler to avoid problems associated with the traditional use of radial oriented measures. especially when variable returns to seale technologies are to be compared.