Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Altered connectedness of the brain chronnectome during the progression
  of Alzheimer's disease   Graph theory has been extensively used to investigate brain network topology
and its changes in disease cohorts. However, many graph theoretic
analysis-based brain network studies focused on the shortest paths or, more
generally, cost-efficiency. In this work, we use two new concepts,
connectedness and 2-connectedness, to measure different global properties
compared to the previously widely adopted ones.

18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom