Bibliometrics is a field of study that uses quantitative analysis to evaluate scientific publications, authors, and their impact. It involves measuring and analyzing various aspects of publications, including citation patterns, the number of publications, the number of authors, and the quality of the journals in which they appear.
Numeric measures provide an indication of a researcher’s impact. These measures are based on the assumption that influential researchers and important works are cited most frequently.
Bibliometrics outputs include:
Bibliometrics should not be used as the sole measure of research quality. They should be used in conjunction with other evaluation methods, such as expert review, to provide a comprehensive and accurate assessment of quality and impact.
Journal rankings are a system for evaluating the relative quality or prestige of academic journals within a particular field or discipline. These rankings are used by researchers, institutions, and funding agencies to make decisions about where to publish research or allocate resources.
It is important to note that journal rankings are not perfect measures of journal quality, and they have been subject to criticism for various reasons including self-citation practices, the prestige of the publisher, or biases against non-English language journals or interdisciplinary research. Additionally, rankings should not be the sole factor used to evaluate the quality or impact of research. It is important to consider other factors, such as the rigour of the peer-review process, the relevance of the research, and its potential impact on society.
JCR - Journal Citation Reports TM uses Web of Science publications data to produce a JIF (Journal Impact Factor TM). The Impact Factor is the average number of citations to papers in a journal in one year, from articles published in any Thomson Reuters listed journal during the previous two years.
Note: the JCR impact factor should not be the only tool used by researchers to assess the usefulness of a journal. It is recommended that it be used together with informed peer review. Other measures in the JCR include:
An Eigenfactor Score is the number of current year citations to citable items from the previous five years, similar to the page rank algorithm used by Google
The Article Influence™ Score determines the average influence of a journal's articles over the first five years after publication, calculated as the journal's Eigenfactor Score divided by the number of articles published by the journal.
CiteScore, SCImago Journal Rank (SJR), and Source Normalized Impact per Paper (SNIP) are the metrics tools available to measure data through the Scopus database. This enables journals from disciplines with different citation behaviours (number and frequency of citations) to be compared.
Scopus calculates the number of citations over a four-year period, divided by the number of publications to produce a CiteScore (Scopus, CiteScore 2020).
SCImago Journal Ranking (SJR) uses Scopus publications data to weight citations from prestigious journals (similar to a Google page ranking algorithm) to calculate a ranking for journals (SCImago, 2021).
Other measures you could use as an indication of your research impact include:
For a robust measure of research impact, use bibliometric measures in conjunction with qualitative assessment (e.g. peer review) of the content of a publication.
Use research impact measures to:
When using bibliometric data, keep in mind that: