Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design Optimisation of Power-Efficient Submarine Line through Machine
  Learning   An optimised subsea system design for energy-efficient SDM operation is
demonstrated using machine learning. The removal of gain-flattening filters
employed in submarine optical amplifiers can result in capacity gains at no
additional overall repeater cost.

32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs