Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proceedings 15th Workshop on Quantitative Aspects of Programming
  Languages and Systems   This volume of the EPTCS contains the proceedings of the 15th international
workshop on Qualitative Aspects of Programming Languages and Systems, QAPL
2017, held at April 23, 2017 in Uppsala, Sweden as a satellite event of ETAPS
2017, the 20th European Joint Conferencec on Theory and Practice of Software.
The volume contains two invited contributions by Erika Abraham and by Andrea
Vandin as well as six technical papers selected by the QAPL 2017 program
committee.

21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an