Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Word-Based Text Compression   Today there are many universal compression algorithms, but in most cases is
for specific data better using specific algorithm - JPEG for images, MPEG for
movies, etc. For textual documents there are special methods based on PPM
algorithm or methods with non-character access, e.g. word-based compression. In
the past, several papers describing variants of word-based compression using
Huffman encoding or LZW method were published. The subject of this paper is the
description of a word-based compression variant based on the LZ77 algorithm.
The LZ77 algorithm and its modifications are described in this paper. Moreover,
various ways of sliding window implementation and various possibilities of
output encoding are described, as well. This paper also includes the
implementation of an experimental application, testing of its efficiency and
finding the best combination of all parts of the LZ77 coder. This is done to
achieve the best compression ratio. In conclusion there is comparison of this
implemented application with other word-based compression programs and with
other commonly used compression programs.

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
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con