vaikutuskertoimia
Vaikutuskertoimet, known in English as impact factors, are a type of bibliometric indicator used to measure the relative importance of a journal. They are calculated by Clarivate Analytics and published annually in the Journal Citation Reports (JCR). The impact factor for a journal is determined by dividing the number of citations received by a journal in a given year to articles published in that journal during the preceding two years by the total number of citable articles published in that same two-year period. For example, the 2022 impact factor of a journal would be calculated as follows: (number of 2022 citations to articles published in 2020 and 2021) / (total number of citable articles published in 2020 and 2021).
Impact factors are often used by researchers, librarians, and funding agencies to evaluate the prestige and