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Neutrality in the choice of number of firms or level of fixed costs in calibrating an Armington-Krugman-Melitz encompassing module for applied general equilibrium models

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  • Oyamada, Kazuhiko

Abstract

This paper shows how an Armington-Krugman-Melitz encompassing module based on Dixon and Rimmer (2012) can be calibrated, and clarifies the choice of initial levels for two kinds of number of firms, or parameter values for two kinds of fixed costs, that enter a Melitz-type specification can be set freely to any preferred value, just as the cases we derive quantities from given value data assuming some of the initial prices to be unity. In consequence, only one kind of additional information, which is on the shape parameter related to productivity, just is required in order to incorporate Melitz-type monopolistic competition and heterogeneous firms into a standard applied general equilibrium model. To be a Krugman-type, nothing is needed. This enables model builders in applied economics to fully enjoy the featured properties of the theoretical models invented by Krugman (1980) and Melitz (2003) in practical policy simulations at low cost.

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Bibliographic Info

Paper provided by Institute of Developing Economies, Japan External Trade Organization(JETRO) in its series IDE Discussion Papers with number 465.

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Date of creation: Mar 2014
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Publication status: Published in IDE Discussion Paper. No. 465. 2014.3
Handle: RePEc:jet:dpaper:dpaper465

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Related research

Keywords: Economics; Applied general equilibrium; Monopolistic competition; Firm heterogeneity; Calibration; Neutrality;

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  1. Zhai, Fan, 2008. "Armington Meets Melitz: Introducing Firm Heterogeneity in a Global CGE Model of Trade," Journal of Economic Integration, Center for Economic Integration, Sejong University, vol. 23, pages 575-604.
  2. Bernard, Andrew & Redding, Stephen J & Schott, Peter, 2004. "Comparative Advantage and Heterogenous Firms," CEPR Discussion Papers 4622, C.E.P.R. Discussion Papers.
  3. Balistreri, Edward J. & Hillberry, Russell H. & Rutherford, Thomas F., 2011. "Structural estimation and solution of international trade models with heterogeneous firms," Journal of International Economics, Elsevier, vol. 83(2), pages 95-108, March.
  4. Roberto Roson, 2006. "Introducing Imperfect Competition in CGE Models: Technical Aspects and Implications," Computational Economics, Society for Computational Economics, vol. 28(1), pages 29-49, August.
  5. Marc Melitz & Stephen Redding, 2014. "New Trade Models, New Welfare Implications," Working Paper 65406, Harvard University OpenScholar.
  6. Balistreri, Edward J. & Rutherford, Thomas F., 2013. "Computing General Equilibrium Theories of Monopolistic Competition and Heterogeneous Firms," Handbook of Computable General Equilibrium Modeling, Elsevier.
  7. Krugman, Paul, 1980. "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, American Economic Association, vol. 70(5), pages 950-59, December.
  8. David Hummels & Peter J. Klenow, 2005. "The Variety and Quality of a Nation's Exports," American Economic Review, American Economic Association, vol. 95(3), pages 704-723, June.
  9. Arnaud Costinot & Andres Rodriguez-Clare & Costas Arkolakis, 2010. "New Trade Models, Same Old Gains?," 2010 Meeting Papers 433, Society for Economic Dynamics.
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