- grzip,
grzip - a block-sorting file
compressor
- grzip is a high-performance file
compressor based on Burrows-Wheeler Transform, Schindler Transform,
Move-To-Front, and Weighted Frequency Counting. It uses the Block-Sorting
Lossless Data Compression Algorithm, which has received considerable attention
in recent years for both it's simplicity and effectiveness. This implementation
has a compression rate of 2.234 bps on the Calgary Corpus (14 files) without
preprocessing filters.
GRZipII was written on C99
NOTE: GRZipII can't compress/uncompress pkzip/winzip zip
files
Comparison Tests of some BSLDCA based
compressors **
-
| Name |
Version |
Algorithm |
Author |
Release date |
| GRZipII |
0.2.4 |
BWT,ST4 + MTF,WFC + ARI |
Grebnov Ilya |
May. 2004 |
| UHBC |
1.0 |
BWT + MTF,WFC,DWFC + ARI |
Uwe Herklotz |
Jun. 2003 |
| ABC |
2.4 |
BWT + MTF,SIF,AWFC + ARI |
Dr. Juergen Abel |
Apr. 2003 |
| BWIC |
|
BWT + IF + ARI |
Ziya Arnavut |
Feb. 2003 |
| YBS |
0.03f |
BWT + DC + ARI |
Vadim Yoockin |
Sep. 2002 |
| DC |
0.99.298b |
BWT + DC + ARI |
Edgar Binder |
Aug. 2002 |
| GCA |
0.9k |
BWT + ARI |
Shin-ichi Tsuruta |
Dec. 2001 |
| ZZIP |
0.36c |
BWT + MTF + ARI |
Damien Debin |
Jun. 2001 |
| QLFC |
6.6w |
BWT + LFC + ARI |
Ghido Florin Valentin |
Feb. 2001 |
| BA |
1.01b5 |
BWT + MTF + ARI |
Mikael Lundqvist |
Nov. 2000 |
| IMP |
1.10 |
BWT + MTF + Huffman |
Conor McCarthy |
Sep. 2000 |
| szip |
1.12b |
BWT,ST + ARI |
Michael Schindler |
Mar. 2000 |
| bzip2 |
1.0.2 |
BWT + MTF + Huffman |
Julian Seward |
Jan. 2000 |
| ARC |
|
BWT + MTF + ARI |
Ian Sutton |
Jun. 1999 |
| BWC |
0.99 |
BWT + MTF + ARI |
Willem Monsuwe |
Jan. 1999 |
** - Compressors were configured to disable all preprocessing
filters.
Most of compressors are available at
ftp://ftp.elf.stuba.sk/pub/pc/pack
Compressors were tested on files, taken from
VYCCT.
The specifications and configuration of the test computer is AMD-Athlon 900Mhz
CPU, 100Mhz FSB, 256MB SDRAM, 20Gb Quantum AS HDD, Microsoft Windows 98 SE
OS.
Installation
-
Using the FreeBSD ports
system:
cd /usr/ports/archivers/grzip
make install clean
Using the FreeBSD pkg
system:
pkg install archivers/grzip
-