Tests and confidence intervals for a class of scientometric, technological and economic specialisation ratios

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[Zeitschriftenartikel]

Schubert, Torben; Grupp, Hariolf

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Abstract	In economic, scientometric, and innovation research, often so-called specialisation indices are used. These indices measure comparative strengths or weaknesses as well as specialisation profiles of the observation units with respect to certain criteria, such as patenting and publication or trade activities. They allow question like: Is Germany specialised in the export of motor vehicles? Or is the UK specialised in biotech patents? Unfortunately, little is known about their statistical properties, which makes valid inferencing difficult. In this article we prove asymptotic normality for a certain class of scientometric, technological, and some economic, though non-monetary, specialisation indices. We provide asymptotic confidence intervals and demonstrate in an example how to obtain statistically sound results. We will also address the problem of normalisation of these indicators. All procedures proposed are provided in an add-on package for R statistical environment.
Klassifikation	Wirtschaftsstatistik, Ökonometrie, Wirtschaftsinformatik
Freie Schlagwörter	specialisation; indicators; statistical inference; RPA; RLA
Publikationsjahr	2009
Seitenangabe	S. 941-950
Zeitschriftentitel	Applied Economics, 43 (2009) 8
DOI	http://dx.doi.org/10.1080/00036840802600160
Status	Postprint; begutachtet (peer reviewed)
Lizenz	PEER Licence Agreement (applicable only to documents from PEER project)