Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Frequency Limited $\mathcal{H}_2$ Optimal Model Reduction of Large-Scale
  Sparse Dynamical Systems   We mainly consider the frequency limited $\mathcal{H}_2$ optimal model order
reduction of large-scale sparse generalized systems. For this purpose we need
to solve two Sylvester equations. This paper proposes efficient algorithm to
solve them efficiently. The ideas are also generalized to index-1 descriptor
systems. Numerical experiments are carried out using Python Programming
Language and the results are presented to demonstrate the approximation
accuracy and computational efficiency of the proposed techniques.

13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an