The impact factor, abbreviated as IF, is the data in the Journal Citation Report (JCR) produced by Thomson Reuters. That is, the papers published in the first two years of a periodical in the reporting year (JCR? Divided by the total number of papers published in this journal in the past two years. This is an internationally accepted periodical evaluation index.
Influence factors are not the most objective criteria for evaluating the influence of periodicals;
Generally speaking, the higher the impact factor, the greater the influence of the journal. For some comprehensive or important research fields, the citation rate is relatively high because of the wide range of research fields. For example, biological and chemical journals are generally more likely to have higher influence.
Although the impact factor can represent the academic quality to some extent, there is no linear proportional relationship between the impact factor and the academic quality. For example, it cannot be said that a journal with an impact factor of 5.0 is necessarily better than a journal with an impact factor of 2.0, and the impact factor does not have the function of accurately and quantitatively evaluating academic quality.
Some domestic scientific research institutions often use the number of cumulative impact factors or single impact factors as quantitative standards when evaluating scientific research performance. Some researchers may not be promoted or rewarded because of the difference of influence factors of 0. 1, which is absolutely undesirable.
Extended data:
The impact factors of SCI journals are generally high. At present, the SCI journals with the highest impact factor in the world have more than 200 impact factors. It is very difficult for ordinary authors to publish more than five SCI journals, which is enough for ordinary authors. Many domestic journals are zero or a little, and it is also the general trend for the author to pay attention to the influencing factors.
In fact, to measure the quality of a journal, it is impossible to explain it only by influencing factors. We can also pay due attention to the annual index, cited volume, published volume, H index, characteristic factor, SJR index and other evaluation indicators of journals.