Open Access Journals of De Gruyter, Journal-Level Influence Index Presence and Coverage Variation Across Metrics
The inclusion of the Open Access journals of De Gruyter into external influence ratings has been found to consistently increase between 2014 and 2018.
A Blog Article by Pablo Markin.
External data indicate that, between 2014 and 2018, the Open Access journal portfolio of De Gruyter has more than tripled its cumulative publishing output based on the information from the Scopus database for the preceding three years. Moreover, the current portfolio of Open Access journals, such as Open Physics, has been predominantly constituted in the period 2014 and 2018, as only 17 journals have been launched in the years 2003-2013. Whereas only 6 Open Access journals have been launched in 2014, in 2015 their number has more than tripled to 19. This pace has not been sustained in the years 2016-2018 that saw only 13 new Open Access journals added to this portfolio, even though in 2019 17 new titles have already been launched.
In this respect, the overall portfolio of these journals has consistently improved its presence in the Impact Factor (IF) metrics, in terms of reported journal count for which internal IF data is available, which stood at only 7 in 2014 and 9 in 2015, while consistently rising to 12 in 2016, 13 in 2017 and 16 in 2018. In October 2019, the Open Access journal portfolio of De Gruyter contains 95 titles, according to the official listing at the degruyter.com website. According to the global data from the Scopus database, in 2018 the overall count of De Gruyter journal titles in Open Access has reached 82 items. This is likely due to the selective inclusion of Open Access journals into this database. According to the SCImago database, in 2018 De Gruyter has published 124 Open Access journals, which includes titles that had been initially launched by De Gruyter Open and later transferred to Sciendo that does not appear as an independent imprint in external databases as data sources.
In addition, the SCImago Journal Rank (SJR) journal performance metric appears to be significantly more comprehensive than CiteScore. According to SCImago, in 2018 out of De Gruyter’s Open Access journals only 123 titles were included into the SJR metric. In 2017, 104 out of 121 De Gruyter Open Access journals indexed at this source. In 2016, 89 Open Access journal titles out of 114 were covered by the SJR metric. In 2015, 84 journals out of 97 and in 2014 76 items out of 90 journals also included into the H-Index, as indicated by SCImago.
These figures, thus, indicate the consistently growing inclusion of De Gruyter Open Access journals into the SCImago database both in relation to SJR and as regards to the apparently more comprehensive H-Index, which measures article- or author-level impact, that has served as an initial journal listing criterion for this source.
By Pablo Markin
Featured Image Credits: Sofie Carsten Nielsen, the “Scientific Impact and Open Access” Session, ESOF 2014, Copenhagen, Denmark, June 24, 2014 | © Courtesy of NordForsk/Terje Heiestad/Flickr.
This post is based on an article that originally appeared in OpenScience, 21/10/2019, https://openscience.com/open-access-journals-of-de-gruyter-journal-level-influence-index-presence-and-coverage-variation-across-metrics/.