Reliability of journal impact factor rankings

Reliability of journal impact factor rankings

BACKGROUND Journal impact factors and their ranks are used widely by journals, researchers, and research assessment exercises. METHODS Based on citations to journals in research and experimental medicine in 2005, Bayesian Markov chain Monte Carlo methods were used to estimate the uncertainty associated with these journal performance indicators. RESULTS Intervals representing plausible range...

How robust are journal rankings based on the impact factor? Evidence from the economic sciences

Over the Journal Impact Factor

Thomson Reuters reports journal impact factor (JIF) 2012 thr­ ough its web database, Journal Citation Reports (JCR) (http:// apps.webofknowledge.com) for journals indexed in the Science Citation Index (SCI/SCIE). Many top journals are reported to continue their high JIF and most of others keep similar or in­ creased ones as JIF 2011. The JCR updates JIF every year and the JIF 2012 will be used ...

The journal impact factor today.

Wehavebeen recently notified that Jornal de Pediatriawill also soon be covered by Thomson Scientific (ISI). This is a major step towards our goal – from themoment our journal’s impact factor begins to be measured, we will be evaluated in terms of the journal’s weight within the context of the international pediatrics scene. This achievement was accomplished through hard work on the part of the ...

Comparison of SCImago journal rank indicator with journal impact factor.

The application of currently available sophisticated algorithms of citation analysis allows for the incorporation of the "quality" of citations in the evaluation of scientific journals. We sought to compare the newly introduced SCImago journal rank (SJR) indicator with the journal impact factor (IF). We retrieved relevant information from the official Web sites hosting the above indices and the...