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Online determination of the journal impact factor and its international properties

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Abstract

The article describes the method for the online determination of the journal impact factor (JIF). The method is very simple and can be used both for the ISI defined journal impact factor and for the calculation of other generalised journal impact factors. But the direct online method fails for non-ISI journals i.e. journals not indexed by ISI to the three citation databases. For such journals only the “External Cited Impact Factor” associated with citations from ISI journals (ECIFisi) can be determined online by the common method. As an extra benefit the online method makes available the determination of the geographical distribution of citations and citable units in relation to any given JIF, i.e. the international impact for a particular journal in a given year. The method is illustrated by calculating the generalised JIF, self-citations and ECIF(isi) as well as the international impact for Journal of Documentation and Scientometrics.

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References

  • Egghe, L., Rousseau, R. (1990),Introduction to Informetrics, Elsevier Science Publishers B.V. p. 450.

  • Glänzel, W. (1996), The need for standards in bibliometric research and technology,Scientometrics, 35: 167–176.

    Article  Google Scholar 

  • Hjortgaard Christensen, F., Ingwersen, P. (1996) Online citation analysis. A methodological approach,Scientometrics, 37: 39–62.

    Article  Google Scholar 

  • Huber, C.F. (1995), SciSearch on STN: Unique features for sophisticated searching,Database, 18, April/may, 52–62.

    Google Scholar 

  • Ingwersen, P., Hjortgaard Christensen, F. (1997), Data set isolation for bibliometric online analyses of research publications: Fundamental methodological issues.Journal of the American Society for Information Science, 48(3): 205–217.

    Article  Google Scholar 

  • Moed, H.F., Van Leeuven, Th.N. (1995), Improving the accuracy of Institute for Scientific Information's journal impact factors,Journal of American Society for Information Science, 46: 461–467.

    Article  Google Scholar 

  • Moed, H.F. (1996 a), Differences in the construction of sci based bibliometric indicators among various producers: A first overview,Scientometrics, 35: 177–191.

    Article  Google Scholar 

  • Moed, H.F., Van Leeuven, Th.N. (1996 b), Impact factors can mislead,Nature, 381: 16 May, 186.

    Article  Google Scholar 

  • Nisonger, Thomas E. (1995), Impact factor based ranking of library and information science journals in the Social Sciences Citation Index Journal Citation Reports, 1980 to 1992. In:M. Koenig, A. Bookstein (Eds),Proceedings of the Fifth Biennial Conference of the International Society for Scientometrics and Informetrics, Rosary College, IL. June 7–10, 1995. Medford, NJ: Learned Information: pp. 393–402.

    Google Scholar 

  • Pichappan, P. A. (1995), Dual refinement of journal self-citation measures,Scientometrics, 33: 13–21.

    Article  Google Scholar 

  • Proceedings of the Workshop on “Bibliometric Standards”. Rosary College, River Forest, Illinois (USA), June 11, 1995. In:Scientometrics, 35 (1996) 165–290.

  • Rousseau, R. (1988), Citation distribution of pure mathematical journals, In:Egghe, L., Rousseau, R. (Eds),Informetrics 87/88, Elsevier Science Publishers B.V. pp. 249–262.

  • Sen, B.K. et al. (1989), A method for determining the impact factor of a non-SCI journal,Journal of Documentation, 45: 139–141.

    Google Scholar 

  • Vinkler, P. (1991), Possible causes of differences in information impact of journals from different subfields,Scientometrics, 20: 145–161.

    Article  Google Scholar 

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Correspondence to P. Ingwersen.

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Hjortgaard Christensen, F., Ingwersen, P. & Wormell, I. Online determination of the journal impact factor and its international properties. Scientometrics 40, 529–540 (1997). https://doi.org/10.1007/BF02459298

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  • DOI: https://doi.org/10.1007/BF02459298

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