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Braun, T.: Dokumentklassifikation durch Clustering (o.J.)
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- Abstract
- Beim Clustering werden Dokumente aufgrund von Ähnlichkeiten untereinander klassifiziert, im Gegensatz z.B. zur Klassifikation anhand einer Ontologie. Bei den gebräuchlichen Clusteringverfahren wird ein Dokument als die Menge seiner Wörter angesehen. Zur Bestimmung der Ähnlichkeit zwischen Dokumenten werden verschiedene Ähnlichkeitsmaße definiert.
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Braun, T.; Glanzel, W.; Grupp, H.: ¬The scientometric weight of 50 nations in 27 scientific areas, 1989-1993 : Pt.1: All fields combined, mathematics, engineering, chemistry and physics (1995)
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- Abstract
- Attempts some new approaches to the presentation of bibliometric macro level indicators. Mathematics, engineering, physics and chemistry subfields are assigned to 13 science areas. Each science area then appears on 1 table (left page) and 2 graphs (right page). The 1st graph shows the main citation rates with respect to the world average on a relational chart. The countries are represented by letter codes that can be found in the corresponding table on the facing page. The 2nd graph visualizes the countries' relative research activity in the given science areas as compared to the world standard
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Braun, T.; Dióspatonyi. I.: Gatekeeping indicators exemplified by the main players in the international gatekeeping orchestration of analytical chemistry journals (2005)
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- Abstract
- Most of the science indicators used in the literature for characterizing the research activity and performance of nations are based an journal articles and citations. As an alternative we have examined the use of journal gatekeepers as real and useful science indicators. As an example, gatekeepers of some analytical chemistry core journals were used. To reveal the changes in the contributions of different nations to the field studied, a comparison has been made between the 1970-1974 and the 2002 data an gatekeepers of the same journals.
