By a News Reporter-Staff News Editor at Information Technology Newsweekly -- Investigators publish new report on Information Technology. According to news reporting originating from Tenerife, Spain, by VerticalNews correspondents, research stated, "Journal metrics are employed for the assessment of scientific scholar journals from a general bibliometric perspective. In this context, the Thomson Reuters journal impact factors (JIFs) are the citation-based indicators most used."
Our news editors obtained a quote from the research from La Laguna University, "The 2-year journal impact factor (2-JIF) counts citations to one and two year old articles, while the 5-year journal impact factor (5-JIF) counts citations from one to five year old articles. Nevertheless, these indicators are not comparable among fields of science for two reasons: (i) each field has a different impact maturity time, and (ii) because of systematic differences in publication and citation behavior across disciplines. In fact, the 5-JIF firstly appeared in the journal Citation Reports OCR) in 2007 with the purpose of making more comparable impacts in fields in which impact matures slowly. However, there is not an optimal fixed impact maturity time valid for all the fields. In some of them two years provides a good performance whereas in others three or more years are necessary. Therefore, there is a problem when comparing a journal from a field in which impact matures slowly with a journal from a field in which impact matures rapidly. In this work, we propose the 2-year maximum journal impact factor (2M-JIF), a new impact indicator that considers the 2-year rolling citation time window of maximum impact instead of the previous 2-year time window."
According to the news editors, the research concluded: "Finally, an empirical application comparing 2-JIF, 5-JIF, and 2M-JIF shows that the maximum rolling target window reduces the between-group variance with respect to the within-group variance in a random sample of about six hundred journals from eight different fields."
For more information on this research see: Impact maturity times and citation time windows: The 2-year maximum journal impact factor. Journal of Informetrics, 2013;7(3):593-602. 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)
The news editors report that additional information may be obtained by contacting P. Dorta-Gonzalez, La Laguna University, Dept. of Estadist Invest Operat & Comput, Tenerife, Spain.
Keywords for this news article include: Spain, Europe, Tenerife, Information Technology
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