Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recursive constructions and their maximum likelihood decoding   We consider recursive decoding techniques for RM codes, their subcodes, and
newly designed codes. For moderate lengths up to 512, we obtain near-optimum
decoding with feasible complexity.

13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex