Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Reduced-Complexity Projection Algorithm for ADMM-based LP Decoding   The Alternating Direction Method of Multipliers has recently been adapted for
Linear Programming Decoding of Low-Density Parity-Check codes. The computation
of the projection onto the parity polytope is the core of this algorithm and
usually involves a sorting operation, which is the main effort of the
projection.
  In this paper, we present an algorithm with low complexity to compute this
projection. The algorithm relies on new findings in the recursive structure of
the parity polytope and iteratively fixes selected components. It requires up
to 37% less arithmetical operations compared to state-of-the-art projections.
Additionally, it does not involve a sorting operation, which is needed in all
exact state-of-the-art projection algorithms. These two benefits make it
appealing for efficient hard- and software implementations.

11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg