Research on impact evaluation of open access journals

Impact evaluation of open access journals represent how citation indicator and open metric indicators may be affected by open access. Citation indicators and open metric indicators are used in integrated assessments of impact evaluation. Here we test, systematically across many indicators, how well such impact indicators capture the impacts of OA journals. Using the Scopus as data sources for impact evaluation of OA journals, we find that the majority of indicators underestimate the value of freedom in impact evaluation such as citation indicators, while impacts on citation impact are overestimated in impact evaluation. This has important implications for impact evaluation of academic exchange that rely on citation frequency. It also means that citation indicators reflect part of impact of OA journal. This research evaluates the impact of OA journals from citation indicators and open metric indicators, which plays an important role in the development of OA journals.