This dataset contains the metadata for the LibGen scimag database of full-text scholarly documents. Each row of this dataset corresponds to a scholarly document in the LibGen scimag database, as identified by its DOI.
scimag_dbbackup-2017-04-07.rar was downloaded from http://libgen.io/dbdumps/backup_archive/scimag_dbbackup-2017-04-07.rar. It's a compressed SQL dump of the LibGen scimag metadata database on 2017-04-07. This is the unmodified file downloaded from libgen.io. It encodes a single table named scimag.
libgen-scimag-2017-04-07.tsv.xz contains a TSV version of the scimag table from scimag_dbbackup-2017-04-07.rar. It's more user-friendly because it provides access to the data without requiring MySQL, is UTF-8 encoded, and has null bytes removed.
The code that downloaded and processed these datasets is at https://git.io/v7Uh4. Users should note that the TimeAdded column appears to store the modification rather than the creation date for each DOI. As discussed in https://doi.org/b9s5, this field should not be mistaken for the date of first upload to LibGen scimag.