Versions tested: 0
Optimal parameters: -
Links: http://www.cs.fredon...
Authors: Ziya Arnavut
Algorithms: BWT+IF+ARI
Notable peformances: -


We introduced a new coder, called Inversion Coder (or Inversion Ranks). Inversion coder yields better compression than MTF-based coders on most of the files and on large text files. Our extensive simulation results have shown that a Inversion-based Coding technique is superior in compressing DNA, Image, Audio and other Signal-based data, in addition to large text files. It simply yields better compression than MTF-based coders. The compression gain with respect to MTF-based coders in terms of weighted average bit per symbol is in the range of 4-12% for the test files utilized.
the program website 2009 March 26.


The compressor is featured in the BWT comparison.

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Disqualified: not a native Win32 executable.

Disqualified (why) configurations (with qualification ratings)
Ver Rating CPR DPR S.E. R.E. Ratio C. kB/s D. kB/s
0 - (q1, q2)

Version info

0, tar: yes, mode: n/a, crc32: n/a, decoder: n/a, tested: 2009 Mar 27
compression: bwic.exe <src> <cfile>
decompression: ubwic.exe <cfile> <src>