Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Approximate Shifted Combinatorial Optimization   Shifted combinatorial optimization is a new nonlinear optimization framework,
which is a broad extension of standard combinatorial optimization, involving
the choice of several feasible solutions at a time. It captures well studied
and diverse problems ranging from congestive to partitioning problems. In
particular, every standard combinatorial optimization problem has its shifted
counterpart, which is typically much harder. Here we initiate a study of
approximation algorithms for this broad optimization framework.

26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th