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Patterns of Discovery

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Author Info
Mauro Caminati ()
Serena Sordi ()
Arsenio Stabile ()

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Abstract

From a given directed weighted network of knowledge links between technology fields, the paper develops a multisector dynamic model of incremental innovation and R&D activity in these fields. The model is focused on the equilibrium share distribution of these variables, which is proved to be locally stable, with reference to a simple low dimensional case. Simulation methods suggest that local, and also global, stability extend to any model dimension. It is also shown how different network structures map to different asymptotic share distributions. Using the NBER patents and patent citation data files, the analytical framework is then used to analyse some general features of the pattern of knowledge creation and transfer in the period 1975-1999. From a descriptive viewpoint, the changes in the share distribution of innovation activity predicted by the model match reasonably well the actual changes in the period

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Paper provided by Department of Economics, University of Siena in its series Department of Economics University of Siena with number 473.

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Date of creation: Feb 2006
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Handle: RePEc:usi:wpaper:473

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Related research
Keywords: directed weighted network knowledge spillovers share distribution incremental innovation and R&D dynamics local stability simulation patents and patent citations

Find related papers by JEL classification:
O30 - Economic Development, Technological Change, and Growth - - Technological Change - - - General
C61 - Mathematical and Quantitative Methods - - Mathematical Methods and Programming - - - Optimization Techniques; Programming Models; Dynamic Analysis

This paper has been announced in the following NEP Reports:

References listed on IDEAS
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  1. Larry Samuelson, 2005. "Economic Theory and Experimental Economics," Journal of Economic Literature, American Economic Association, vol. 43(1), pages 65-107, March. [Downloadable!] (restricted)
  2. David, Paul A, 1990. "The Dynamo and the Computer: An Historical Perspective on the Modern Productivity Paradox," American Economic Review, American Economic Association, vol. 80(2), pages 355-61, May. [Downloadable!] (restricted)
  3. Cowan,Robin, 2004. "Network models of innovation and knowledge diffusion," Research Memoranda 016, Maastricht : MERIT, Maastricht Economic Research Institute on Innovation and Technology. [Downloadable!]
  4. Martin L. Weitzman, 1998. "Recombinant Growth," The Quarterly Journal of Economics, MIT Press, vol. 113(2), pages 331-360, May. [Downloadable!] (restricted)
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  5. Hall, B. & Jaffe, A. & Trajtenberg, M., 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," Papers 2001-29, Tel Aviv.
    Other versions:
  6. Pavitt, Keith, 1998. "Technologies, Products and Organization in the Innovating Firm: What Adam Smith Tells Us and Joseph Schumpeter Doesn't," Industrial and Corporate Change, Oxford University Press, vol. 7(3), pages 433-52, September.
  7. Stanley Reiter, 1992. "Knowledge, Discovery and Growth," Discussion Papers 1011, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
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