Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scholia and scientometrics with Wikidata   Scholia is a tool to handle scientific bibliographic information in Wikidata.
The Scholia Web service creates on-the-fly scholarly profiles for researchers,
organizations, journals, publishers, individual scholarly works, and for
research topics. To collect the data, it queries the SPARQL-based Wikidata
Query Service. Among several display formats available in Scholia are lists of
publications for individual researchers and organizations, publications per
year, employment timelines, as well as co-author networks and citation graphs.
The Python package implementing the Web service is also able to format Wikidata
bibliographic entries for use in LaTeX/BIBTeX.

18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat