The h ind ex correlates with obvious success indicators such as winning the nobel prize, being accepted for research fellowships and holding positions at top universi ties. It uses the directed graph of citations links from one document to another document to reveal. It offers a wide range of statistics, with several types of indexes provided. Web of science is the worlds most trusted publisherindependent global citation database. The hindex, or hirsch index, measures the impact of a particular scientist rather than a journal. Science, technology, medicine, social sciences and arts and humanities. The number of citations for each paper must be equal to or greater than its rank in order to be counted. The h index correlates with obvious success indicators such as winning the nobel prize, being accepted for research fellowships and holding positions at top universities. Resources bibliometrics impact factor, hindex, and. Citation rates and practices vary widely between discipilnes.
After 20 years the author would have an h index of 19 if he had used the unfair strategy, while a random self citation strategy would have resulted in an h index of only 14. Th e ind ex is based on the set of the scientists mos t cited pape rs and. Google scholar and microsoft academic search to obtain the raw citations, then analyzes these and presents the following metrics. Journal citation reports jcr is also produced by thomson reuter. The h index is an authorlevel metric that attempts to measure both the productivity and citation impact of the publications of a scientist or scholar. Feb 06, 2016 publish or perish also calculates the e index as proposed by chunting zhang in his paper the e index, complementing the h index for excess citations, plos one, vol 5, issue 5 may 2009, e5429. Publish or perish is software program that retrieves and analyzes academic citations. The e index is the square root of the surplus of citations in the h set beyond h 2, i. What software do you recommend for scientometrics studies.
Journal of mechatronics, electrical power, and vehicular technology mev has been cited at least 66 times at scopus database since the first publication in 2010. Scholarometer is a social tool to facilitate citation analysis and help evaluate the impact of an authors publications. The h index is an authorlevel metric that attempts to measure both the productivity and citatio n impact of the publications of a scientist or scholar. Isi was purchased by thomson reuters over 20 years ago. To find out how much impact a particular article or author has had, by showing which other authors cited the work within their own papers. It is defined as the highest number of publications of a scientist that received h or more citations each while the other publications have not more than h citations each.
To calculate your hindex, list your papers based on the number of their citations, from most to least. On the search results page, click the create citation report located on the top right of the page. Citation analysis increasing your researchs visibility and. Total number of papers and total number of citations. Data sources and software tools for bibliometric studies. The hindex is one specific method utilizing citation analysis to determine an individuals impact. The h index is one specific method utilizing citation analysis to determine an individuals impact. There is a large body of literature on citation analysis, sometimes called scientometrics, a term invented by vasily nalimov, or more specifically bibliometrics. Nov 05, 2019 the average annual increase in the individual h index. For example, the h index can never exceed the total number of publications a scientist has.
Hindex and other indices see example 4 citation scores at article level see example 4 cocitation scores the number of times that two papers are cited together in a single paper see example 5. Mar 12, 2020 bibliometrics impact factor, h index, and more. Citation analysis as a qualitative measurement should be used. Using citation information from multiple databases and comparing the results can offer a better perspective of impact within a field. The average annual increase in the individual hindex. The gadget gives the total citation count, the number of cited publications and the hindex for an author. Apr 25, 2020 the h index is an index that attempts to measure the scientific research impact and the productivity of the published work of a scientist or scholar. The field blossomed with the advent of the science citation index, which.
Apr 12, 2020 the h index is an index that attempts to measure the scientific research impact and the productivity of the published work of a scientist or scholar. A scientist has index h if h of hisher n p papers have at least h citations each, and the other n p. Resources provides links to resources for bibliometric analysis, including journal ranking indices, such as impact factor, and author impact. It is defined as the highest number of publications of a scientist that received h or more. Citation analysis increasing your researchs visibility. Citation analysis is a way of measuring the relative importance or impact of an author, an article or a publication by counting the number of times that author, article. H index varies by database x articles with x citations. The results are available onscreen and can also be copied to the windows clipboard for pasting into other applications or saved to a variety of output formats for future reference or further. It allows one to compute commonly used statistics, including the hindex, for individual scholars. Google scholar citation analysis libguides at university. Resources bibliometrics impact factor, hindex, and more. Hindex and other indices see example 4 citation scores at article level see example 4 cocitation scores the number of times that two papers are cited together in a single paper see example 5 visitor numbers or other info for online articles and many others e.
Apr 03, 2020 the citation data will relate only to articles indexed within the database. The results are available onscreen and can also be. To calculate your h index, list your papers based on the number of their citations, from most to least. The hindex measures both productivity and citation impact. Resources provides links to resources for bibliometric analysis, including journal ranking indices, such as impact factor, and author impact measures, such as h index. The drawback of the majority of these metrics is that. The citation report automatically calculates the hindex and other metrics based on the complete results of your search. Journal citation reports jcr is also produced by thomson. Citation analysis as a qualitative measurement should be used cautiously, for the following reasons. Apr 03, 2020 the h index is based on a list of publications ranked in descending order by the times cited. Citation analysis can be used to determine the citation impact of authors, articles, and journals. For more information and access to the software, see publish or perish on the website. Sep 22, 2015 finally, a large variety of individual citation metrics have been proposed 14, the most widely disseminated of which is the h index 15. The hindex is based on a list of publications ranked in descending order by the times cited.
Feb 19, 2020 when you perform a citation analysis, you may wish to use several resources to count citations in order to fully capture an articles impact. Finally, a large variety of individual citation metrics have been proposed 14, the most widely disseminated of which is the hindex 15. To find an hindex for an author using the citation report application. We investigate to what degree authors can inflate their h. The hindex correlates with obvious success indicators. When scopus counts citations, it is only counting citations from articles indexed in the scopus database. Publish or perish is a software program that must be installed on your computer.
Thus, if your first paper has at least 1 citation, your h index is at least one. Beyond basic citation counts, there are measures such. In other words, a scholar with an index of h has published h papers each of which has been cited in other papers at least h times. While the basic calculation of the hindex is consistent across databases, the result can vary depending on a particular databases contents or the inclusion of older publications. We might not be doing citation analysis and indexing if it wasnt for him. The value of h is equal to the number of papers n in the list that have n or more citations. This term describes the citations that one possesses, over and above those used for calculating the hindex. Researcher impact this guide is designed to help you explore and understand the world of bibliometrics, altmetrics, journal impact factors, the hindex, and. The hindex is an authorlevel metric that attempts to measure both the productivity and citation impact of the publications of a scientist or scholar.
Once one has determined their hindex, then the eindex may be calculated. Citation analysis, along with peer judgment and assessments of publication counts and venues, is one of the most widely used methods in evaluating the research performance of. An h index of 10 means that there are ten papers that have ten or more citations. Citation analysis, along with peer judgment and assessments of publication counts and. More complete citation counts can also help generate more accurate h index scores of. Sep 12, 2017 the h index measures both productivity and citation impact. I found some of software for bibliometric analysis, citation and cocitation analysis, but could not find accurate and reliable software for thematic analysis and content analysis. Tools citation analysis tools ucf research guides at. I found some of software for bibliometric analysis, citation and co citation analysis, but could not find accurate and reliable software for thematic analysis and content analysis.
If number of papers or h index were taken here as the only points of comparison, we would have a very different picture than if we were to compare a variety of metrics. The hindex looks at the total number of papers you have published, and the number of citations these papers have received. Publish or perish pop pop is downloadable software providing enhanced analysis of. In my case for example, at the time of this communication i have an overall citation number of. The citation data will relate only to articles indexed within the database. Citation analysis can be used to assess core journal titles. Nov 11, 2010 figure 3 shows how the h index develops over the period of publishing each of the 60 papers. Guided by the legacy of dr eugene garfield, inventor of the worlds first citation index, web of science is the most powerful research engine, delivering your library with bestinclass publication and citation data for confident discovery, access and assessment. The h index is a quantitative metric based on analysis of publication data using publications and citations to provide an estimate of the importance, significance, and broad impact of a scientists cumulative research contributions. The drawback of the majority of these metrics is that they take into consideration the number of publications. A citationbased, author and agenormalized, logarithmic. This is one of a series of posts describing tools that are available for citation analysis.
Apr 20, 2020 the h index, or hirsch index, measures the impact of a particular scientist rather than a journal. Citation analysis is a way of measuring the relative importance or impact of an author, an article or a publication by counting the number of times that author, article, or publication has been cited by other works. Publish or perish is a software program that retrieves and analyzes academic citations. Publish or perish also calculates the eindex as proposed by chunting zhang in his paper the eindex, complementing the hindex for excess citations, plos one, vol 5, issue 5 may 2009. The perauthor ageweighted citation rate is similar to the plain awcr, but is normalized to the number of authors for each paper. Historically, the only tools available for citation analysis are the isi web of science and the elsevier scopus databases. The hindex is an index that attempts to measure the scientific research impact and the productivity of the published work of a scientist or scholar. Probably the most curious statistic is the one where his median citations per paper is divided by the number of authors. Jul 20, 2018 the gadget gives the total citation count, the number of cited publications and the hindex for an author. The hindex has received an enormous attention for being an indicator that measures the quality of researchers and organizations. More complete citation counts can help support or identify more precisely any discrepancies between research productivity, peer evaluation, and citation data. While the basic calculation of the hindex is consistent across databases, the result can vary depending on a particular databases contents or the inclusion of older.
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