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Issues in measuring the degree of technological specialisation with patent data

Nicolas van Zeebroeck, Bruno van Pottelsberghe de la Potterie and Wook Han
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Bruno van Pottelsberghe de la Potterie: Brussels University (ULB), Solvay Business School, CEB, DULBEA and CEPR
Wook Han: ULB - Solvay Business School

Authors registered in the RePEc Author Service: Bruno van Pottelsberghe de la Potterie ()

Scientometrics, 2006, vol. 66, issue 3, No 4, 492 pages

Abstract: Summary This paper analyses several issues that arise when measuring technological specialisation with patent data. Three starting choices are required regarding the data source, the statistical measure and the sectoral aggregation level. We show that the measure is highly sensitive to the data source and to the level of sectoral aggregation. The statistical analysis further suggests that the most stable and reliable measures of technological specialization are obtained with patents applied at the EPO, with Gini or C20 as statistical measure and the 4-digits aggregation level of the IPC classification system.

Date: 2006
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Citations: View citations in EconPapers (27)

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DOI: 10.1007/s11192-006-0035-y

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