By a News Reporter-Staff News Editor at Information Technology Newsweekly -- Researchers detail new data in Information Technology. According to news reporting originating in Madrid, Spain, by VerticalNews journalists, research stated, "In this paper, we develop a novel methodology within the IDCP measuring framework for comparing normalization procedures based on different classification systems of articles into scientific disciplines. Firstly, we discuss the properties of two rankings, based on a graphical and a numerical approach, for the comparison of any pair of normalization procedures using a single classification system for evaluation purposes."
The news reporters obtained a quote from the research from the University of Carlos III, "Secondly, when the normalization procedures are based on two different classification systems, we introduce two new rankings following the graphical and the numerical approaches. Each ranking is based on a double test that assesses the two normalization procedures in terms of the two classification systems on which they depend. Thirdly, we also compare the two normalization procedures using a third, independent classification system for evaluation purposes. In the empirical part of the paper we use: (i) a classification system consisting of 219 sub-fields identified with the Web of Science subject-categories; an aggregate classification system consisting of 19 broad fields, as well as a systematic and a random assignment of articles to sub-fields with the aim of maximizing or minimizing differences across sub-fields; (ii) four normalization procedures that use the field or sub-field mean citations of the above four classification systems as normalization factors; and (iii) a large dataset, indexed by Thomson Reuters, in which 4.4 million articles published in 1998-2003 with a five-year citation window are assigned to sub-fields using a fractional approach."
According to the news reporters, the research concluded: "The substantive results concerning the comparison of the four normalization procedures indicate that the methodology can be useful in practice."
For more information on this research see: The comparison of normalization procedures based on different classification systems. Journal of Informetrics, 2013;7(4):945-958. Journal of Informetrics can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Informetrics - www.elsevier.com/wps/product/cws_home/709551)
Our news correspondents report that additional information may be obtained by contacting Y.R. Li, Univ Carlos III, Dept. of Econ, Madrid, Spain.
Keywords for this news article include: Spain, Madrid, Europe, Information Technology
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