Imposing local concavity in the translog and generalized Leontief cost functions

Ryan, David L.; Wales, Terence

doi:10.1016/s0165-1765(99)00280-3

Cited by 130 publications

(79 citation statements)

References 4 publications

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“…However, theoretical consistency can be locally imposed on these forms by maintaining their functional flexibility. Further, RYAN and WALES (2000) even argue that a sophisticated choice of the reference point could lead to satisfaction of consistency at most or even all data points in the sample.…”

Section: A Translog Production Functionmentioning

confidence: 99%

Economic Theory and Econometric Practice: Parametric Efficiency Analysis

Sauer¹

2006

Empirical Economics

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Section: A Translog Production Functionmentioning

confidence: 99%

Economic Theory and Econometric Practice: Parametric Efficiency Analysis

Sauer¹

2006

Empirical Economics

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“…The main reason being because of the very flexible nature of the translog functional form. As a consequence, positive marginal costs at the mean were imposed on our model (see Jorgenson, 2000;Diewert and Wales, 1987;Fuss and McFadden, 1978;Lau, 1978;Terrell, 1996;Ryan and Wales, 2000;and Salvanes and Tjøtta, 1998). This improved concavity to 84% and marginal costs for local, national and international and access all became positive.…”

Section: Econometric Estimation Results Of the Cost Functionmentioning

confidence: 99%

Natural or Unnatural Monopolies in UK Telecommunications?

Correa

2003

SSRN Journal

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“…Local concavity (that is, concavity at each observation in the various data series) was imposed using the method of Ryan and Wales (2000). We note that the imposition of concavity restrictions appears to be something of an exception in the literature, and that a common practice is to instead report the number of observations at which the estimated cost or production function fails these restrictions.…”

Section: Application To the Translog Cost Functionmentioning

confidence: 99%

Estimating energy-augmenting technological change in developingcountry industries

Sanstad¹,

Roy²,

Sathaye³

2006

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Assumptions regarding the magnitude and direction of energy-related technological change have long been recognized as critical determinants of the outputs and policy conclusions derived from integrated assessment models. Particularly in the case of developing countries, however, empirical analysis of technological change has lagged behind simulation modeling. This paper presents estimates of sectoral productivity trends and energy-augmenting technological change for several energy-intensive industries in India and South Korea, and, for comparison, the United States. The key findings are substantial heterogeneity among both industries and countries, and a number of cases of declining energy efficiency. The results are subject to certain technical qualifications both in regards to the methodology and to the direct comparison to integrated assessment parameterizations. Nevertheless, they highlight the importance of closer attention to the empirical basis for common modeling assumptions.

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Imposing local concavity in the translog and generalized Leontief cost functions

Cited by 130 publications

References 4 publications

Economic Theory and Econometric Practice: Parametric Efficiency Analysis

Economic Theory and Econometric Practice: Parametric Efficiency Analysis

Natural or Unnatural Monopolies in UK Telecommunications?

Estimating energy-augmenting technological change in developingcountry industries

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