Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: A Mask R-CNN approach to counting bacterial colony forming units in
  pharmaceutical development
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
19
The categories of this paper are: eess
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph