From: Michael Neumann <neumann@...>
Date: 2001-10-30T06:08:29+09:00
Subject: [ruby-talk:23753] Re: Some inspirations from REBOL

Ryan Leavengood wrote:
> > Well, I did not spent much time with optimizing it. But compressing a
> > 5.3 MB large file with a blocksize of 4000 bytes using BWT (without
> any
> > other compression algorithm like RLE) took on my PC (Athlon 1000) 9
> min.
> 
> WOW!!  That is ssslllooowww.  Do you know how many operations an Athlon
> 1000 can do in 9 minutes?!?  I don't want to do the math, but it is very
> very many.  How much compression did you get in the end?

No compression at all. The BWT algorithm only restructures input data
to data with less entrophy, so that RLE works quite well on this.  

Regards,

  Michael


-- 
Michael Neumann
merlin.zwo InfoDesign GmbH
http://www.merlin-zwo.de