Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ants can orienteer a thief in their robbery   The Thief Orienteering Problem (ThOP) is a multi-component problem that
combines features of two classic combinatorial optimization problems:
Orienteering Problem and Knapsack Problem. The ThOP is challenging due to the
given time constraint and the interaction between its components. We propose an
Ant Colony Optimization algorithm together with a new packing heuristic to deal
individually and interactively with problem components. Our approach
outperforms existing work on more than 90% of the benchmarking instances, with
an average improvement of over 300%.

9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
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
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an