Versions tested: 0.05, 0.07, 0.08, 0.09, 0.11
Optimal parameters: -b120000
Links: bcm011.zip
bcm009.zip
bcm008.zip
bcm007.zip
bcm005.zip
Authors: Ilia Muraviev
Algorithms: BWT+CM
Notable peformances: -

bcm

Version 0.05 submitted on March 8, 2009:

BCM should be tested with a biggest block size possible.

[...]

Better if block size = file size. For a text file it is always true, for binary data not always...

 

Version 0.08 submitted on June 4, 2009.

Version 0.09 submitted on August 23, 2009.

Version 0.11 submitted on June 22, 2010.

The program utilizes libdivsufsort by Yuta Mori.

The compressor is featured in the BWT comparison.

(Have info that should be added here? E-mail.)


Qualified configurations
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
-b118 (-b120000, e118)
0.05 29 52 4 40 1 3.441 2739 2966
0.07 27 -6.9% -13% -7.5% 3.441 0% 2374 -13% 2958 -0.3%
0.08 23 -15% -13% - -19% 3.454 +0.4% 1963 -17% 2340 -21%
0.09 15 -35% -31% - -37% 3.491 +1.1% 1198 -39% 1389 -41%
0.11 28 +87% +67% + +105% 3.424 -1.9% 2503 +109% 3227 +132%

Version info

0.05, tar: yes, mode: 32-bit, crc32: abace262, decoder: 58 kB, tested: 2010 Apr 15
compression: bcm.exe <args> <src> <cfile>
decompression: bcm.exe -d <cfile> <src>
0.07, tar: yes, mode: 32-bit, crc32: 926d56bf, decoder: 60 kB, tested: 2010 Apr 15
compression: bcm.exe <args> <src> <cfile>
decompression: bcm.exe -d <cfile> <src>
0.08, tar: yes, mode: 32-bit, crc32: 5cc17408, decoder: 61 kB, tested: 2010 Apr 15
compression: bcm.exe <args> <src> <cfile>
decompression: bcm.exe d <cfile> <src>
0.09, tar: yes, mode: 32-bit, crc32: 66b5910c, decoder: 63 kB, tested: 2010 Apr 15
compression: bcm.exe <args> <src> <cfile>
decompression: bcm.exe -d <cfile> <src>
0.11, tar: yes, mode: 32-bit, crc32: 3690697a, decoder: 58 kB, tested: 2010 Jun 23
compression: bcm.exe <args> <src>
decompression: bcm.exe -d <cfile>