Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new approach in dynamic traveling salesman problem: a hybrid of ant
  colony optimization and descending gradient   Nowadays swarm intelligence-based algorithms are being used widely to
optimize the dynamic traveling salesman problem (DTSP). In this paper, we have
used mixed method of Ant Colony Optimization (AOC)and gradient descent to
optimize DTSP which differs with ACO algorithm in evaporation rate and
innovative data. This approach prevents premature convergence and scape from
local optimum spots and also makes it possible to find better solutions for
algorithm. In this paper, we are going to offer gradient descent and ACO
algorithm which in comparison to some former methods it shows that algorithm
has significantly improved routes optimization.

25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin