Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wikipedia Citations: A comprehensive dataset of citations with
  identifiers extracted from English Wikipedia   Wikipedia's contents are based on reliable and published sources. To this
date, relatively little is known about what sources Wikipedia relies on, in
part because extracting citations and identifying cited sources is challenging.
To close this gap, we release Wikipedia Citations, a comprehensive dataset of
citations extracted from Wikipedia. A total of 29.3M citations were extracted
from 6.1M English Wikipedia articles as of May 2020, and classified as being to
books, journal articles or Web contents. We were thus able to extract 4.0M
citations to scholarly publications with known identifiers -- including DOI,
PMC, PMID, and ISBN -- and further equip an extra 261K citations with DOIs from
Crossref. As a result, we find that 6.7% of Wikipedia articles cite at least
one journal article with an associated DOI, and that Wikipedia cites just 2% of
all articles with a DOI currently indexed in the Web of Science. We release our
code to allow the community to extend upon our work and update the dataset in
the future.

3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
19
The categories of this paper are: eess