Citation Index and Impact factor

摘要

A citation is the text reference and acknowledgement of a documented information. A scientifically written article comprises a reference section at the end where all the references mentioned in the document are cited serially, and each reference is a citation. A citation count is the frequency of an article cited by other articles. A citation index is a kind of bibliographic database, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents.[1] Citation indexing consists of the charting of the text details of each such reference. Citations are used as a measure of importance of the information source and enables users to gather data on the "impact" of journals as well as assessing and analyzing particular areas of research activity and publication.