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Metrics

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What is Impact Score?
The impact score (IS), also denoted as Journal impact score (JIS), of an academic journal is a measure of the yearly average number of citations to recent articles published in that journal. It is based on Scopus data. Impact Score is defined as the ratio of the number of citations a journal receives in the latest two years (Including the year of calculation) to the number of publications (published documents) of that Journal in those two years. It is calculated as Cites / Doc. (2years).
It helps to measure the relative importance of journals within particular areas and to compare the journals within the same areas. The higher the JIS, the better it is ranked. Typically, journals with more review articles or papers are able to achieve higher JIS.
How do I find the impact score of a journal?
Impact Score is defined as the ratio of the number of citations a journal receives in the latest two years (Including the year of calculation) to the number of publications (published documents) of that Journal in those two years. It is calculated as Cites / Doc. (2years).
You can either refer to the Scopus® database to find the impact score of the journal. The data from the Scopus® database can also be found at resurchify.com. You can find the impact score of thousands of journals on this website.
To search the impact score of any Journal or Conference, you can query by its title or ISSN. You can also query using the publisher's name or by subject category in the search box and can select the required journal. You can also check in detail analysis (like five years average, highest impact in the last five years, etc.) of a particular item, by clicking on the same.
 
All these details will be helpful when you want to select a journal or assess the quality of a journal.
Data Source and Statistical Analysis
We perform various analysis on the data produced by SCImago.
The SCImago Journal & Country Rank is an openly accessible portal which covers the journals and scientific indicators generated from the data present in the Scopus® database (Elsevier B.V.).
Scopus database includes the information of more than 15,000 journals from different fields from around 4,000 publishers and also covers around 1000 open access journals
We perform statistical impact analysis for various journals and conference to evaluate their impact trends. You can find here the average impact index for the last three and five years. We also present here the highest (best) and lowest (worst) impact for the last few years. To show the variation of impact data over years, we compute and show the standard deviation.
 
Impact Score Alternatives
Some of the other metrics which can help you judge the Journal impact are Citescore, h-Index, mention and share of Journal articles on social media, Downloads, Views, etc.
Citescore is another commonly used metric used like an impact factor, to measure journal impact in Scopus. It measures a yearly average number of citations to recently published articles in that Journal. Citescore was launched in December 2016 by Elsevier.
CiteScore metric combines eight different indicators: CiteScore, CiteScore Percentile, CiteScore Rank, Citation Count, CiteScore Quartiles, CiteScore Tracker, Document Count and Percentage Cited.
Citescore Calculations
Citescore is defined as the ratio of the number of citations a journal receives in the latest four years (Including the year of calculation) to the number of publications (published documents) of that Journal in those four years.
 h-Index
The h-index is another way of measuring the productivity or impact of the Journal. The h-index is defined as the maximum value of h such that the given Journal has published h papers, and each of them is cited for at least h number of times in a specific time.
SCImago Journal Rank (SJR)
SCImago Journal Rank (SJR) is another commonly used metric to measure the scholarly influence or impact of the Journal by accounting for the number of cites/citations and the prestige of the citing journals. It is based on the concept called eigenvector centrality, which is commonly used in network theory. This metric is a size-independent measure that ranks journals based on their average prestige per article.
Source Normalized Impact per Paper (SNIP)
Source Normalized Impact per Paper (SNIP) considers the weightage of the total number of citations received in a discipline while calculating a journal's impact. This method of impact calculation normalizes for differences in citation practices between fields so that a single citation is given greater importance or values where citations are less frequent or common in that field.
Unlike the well-known journal impact factor, SNIP corrects for differences in citation practices between scientific fields, thereby allowing for more accurate between-field comparisons of citation impact.