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A multiproduct Symmetric Generalized McFadden cost function

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This paper introduces a flexible multiproduct cost function that permits zero values of one or more of the outputs and can impose restrictions quite easily, if not automatically satisfied, to ensure global concavity property. It satisfies linear homogeneity (in prices) property and is flexible in the output space. Thus the function is ideal for estimating, for example, economies of scope, cost complementarity, product-specific returns to scale, etc., without worrying about zero values of output(s) and extrapolations to points far from the point of approximation. As an empirical application, we use panel data (1978–1985) on 12 Finnish foundry plants to estimate technical progress, overall returns to scale, product-specific returns to scale and economies of scope.

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Kumbhakar, S.C. A multiproduct Symmetric Generalized McFadden cost function. J Prod Anal 5, 349–357 (1994). https://doi.org/10.1007/BF01073566

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Key words

  • cost function
  • multiple outputs
  • global concavity
  • returns to scale
  • economies of scope