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Impact factor is a scientometric index that reflects the yearly mean number of citations of articles published in a journal. It is frequently used as a proxy for the relative importance of a journal within its field, but has been criticised for distorting good scientific practices.
Learn about different measures and methods to evaluate the impact and quality of academic journals, such as citation-based, expert survey, and altmetrics. Compare various national and international rankings, such as SCImago Journal Rank, ERA, and CORE.
The h-index is the number of publications that have each been cited at least as many times as the index value. It measures both the productivity and citation impact of an author, journal, or group of scientists. Learn how to calculate, interpret, and compare the h-index across different fields and databases.
Learn how citation impact is calculated and used for academic articles, books, authors and journals. Compare different citation metrics, such as impact factor, h-index, g-index, and their advantages and limitations.
Google Scholar is a free web search engine that indexes various formats and disciplines of academic publications, such as journals, books, theses, and patents. It also provides features for citation analysis, author profiles, and related articles.
The i-10 index is an author-level metric that indicates the number of publications an author has written that have been cited by at least 10 sources. It was introduced by Google in 2011 as part of their work on Google Scholar.
Web of Science is a paid-access platform that provides reference and citation data from academic journals, conference proceedings, and other documents in various disciplines. It covers over 12 thousand high impact journals, 160 thousand conference proceedings, and 256 disciplines, and offers search and analysis capabilities based on citation indexing.
Scopus is a product of Elsevier that competes with Web of Science and covers life sciences, social sciences, physical sciences and health sciences. It provides various features such as author profiles, chemical search, citation metrics and open access status, but also faces criticism for bias and predatory journals.