Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 28. April 2022)

Suchergebnisse

• 1
  Schreiber, M.: ¬An empirical investigation of the g-index for 26 physicists in comparison with the h-index, the A-index, and the R-index.
  In: Journal of the American Society for Information Science and Technology. 59(2008) no.9, S.1513-1522.
  
  Abstract: J.E. Hirsch (2005) introduced the h-index to quantify an individual's scientific research output by the largest number h of a scientist's papers that received at least h citations. To take into account the highly skewed frequency distribution of citations, L. Egghe (2006a) proposed the g-index as an improvement of the h-index. I have worked out 26 practical cases of physicists from the Institute of Physics at Chemnitz University of Technology, and compare the h and g values in this study. It is demonstrated that the g-index discriminates better between different citation patterns. This also can be achieved by evaluating B.H. Jin's (2006) A-index, which reflects the average number of citations in the h-core, and interpreting it in conjunction with the h-index. h and A can be combined into the R-index to measure the h-core's citation intensity. I also have determined the A and R values for the 26 datasets. For a better comparison, I utilize interpolated indices. The correlations between the various indices as well as with the total number of papers and the highest citation counts are discussed. The largest Pearson correlation coefficient is found between g and R. Although the correlation between g and h is relatively strong, the arrangement of the datasets is significantly different depending on whether they are put into order according to the values of either h or g.
  
  Themenfeld: Informetrie
  Objekt: h-Index ; A-Index ; R-Index
  
  
• 2
  Matrix of WWW indices : a comparison of Internet indexing tools.
  In: http://www.sils.umich.edu/~fprefect/matrix/matirx.shtml. Ann Arbor : University of Michigan School of Information and Library Studies, 1995.
  
  Abstract: Vergleich der Hilfsmittel zur inhaltlichen Suche von Angeboten im Internet
  
  Themenfeld: Suchmaschinen
  Objekt: AliWeb ; AltaVista ; Lycos ; CUI W3 Catalog ; EiNet Galaxy ; GNA Meta-Index ; GNN's Whole Internet Catalog ; InfoSeek ; Inktomi ; Internet Public Library ; WWW Worm ; Yahoo ; JumpStation ; Subject Clearinghouse ; WebCrawler
  
  
• 3
  Rusch-Feja, D.: Structuring subject information sources in the Internet.
  In: Wissen in elektronischen Netzwerken: Strukturierung, Erschließung und Retrieval von Informationsressourcen im Internet. Eine Auswahl von Vorträgen der 19. Jahrestagung der Gesellschaft für Klassifikation, Basel 1995. Hrsg.: H.-C. Hobohm u. H.-J. Wätjen. Oldenburg : BIS, 1995. S.99-132.
  
  Themenfeld: Internet
  Objekt: Gopher Jewels ; CMC Information Sources ; Internet Resources Meta-Index