Metadata sometimes do not include structured data on the openess of a license, but only URLs to full license texts. These URL components are taken as an indication that an article is under an open license.
license_patterns
A data frame with the following variables:
url: the URL components (domain and path) to licenses
source: the source which first identified the license URL as indicating open source. For details, see source.
dissemin:
dissemin compiled a list of licenses used in Crossref,
which indicate OA availability.
oaDOI re-uses this list.
This list has been downloaded from the dissemin source on github
oadoi:
oaDOI also accepted these urls as per a github issue.
Other data:
hybrid_publications(),
unpaywall_df()
license_patterns#> # A tibble: 10 x 2 #> url source #> <chr> <chr> #> 1 creativecommons.org/licenses/ dissem… #> 2 http://koreanjpathol.org/authors/access.php dissem… #> 3 http://olabout.wiley.com/WileyCDA/Section/id-815641.html dissem… #> 4 http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html dissem… #> 5 http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html dissem… #> 6 http://pubs.acs.org/page/policy/authorchoice_termsofuse.html dissem… #> 7 http://www.elsevier.com/open-access/userlicense/1.0/ dissem… #> 8 http://www.ieee.org/publications_standards/publications/rights/oapa.… oadoi #> 9 http://aspb.org/publications/aspb-journals/open-articles oadoi #> 10 https://doi.org/10.1364/OA_License_v1 oadoi