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- Newsgroups: comp.compression
- Path: sparky!uunet!walter!att-out!pacbell.com!ames!agate!spool.mu.edu!yale.edu!ira.uka.de!Germany.EU.net!news.Hamburg.Germany.EU.net!gulasch!elmar
- From: elmar@gulasch.hanse.de (Elmar Folba)
- Subject: Re: Is This Possible (or is it B.S)? [200:1 Lossless Compression]
- References: <1jndtq$odg@agate.berkeley.edu>
- Organization: Spare-time Hacker, Hamburg, Germany
- Date: Fri, 22 Jan 1993 19:00:49 GMT
- Message-ID: <1993Jan22.190049.608@gulasch.hanse.de>
- Lines: 32
-
- In article <1jndtq$odg@agate.berkeley.edu> forrest@nobozo.CS.Berkeley.EDU (Jon Forrest) writes:
- >I'm the first to admit that I don't know anything about compression.
- >That's why I'm extremely puzzled by the following abstract of a talk that's
- >going to be given here at Berkeley. Is this B.S. or should I raise
- >my arms and cry hallelujah?
- >
- >... (bigger part of quote deleted)
- > 1:00 p.m. - 3:00 p.m.
- > 608-7 Evans Hall
- >
- > Triada, a development stage company located in Michi-
- >gan, has developed an encoding transform capable of up to
- >200:1 lossless data compression. The theoretical underpin-
-
- So what?
- 'Up to' does not mean anything. Run-length encoding a file of one million
- equal bytes will give you a much better compression ratio ON THAT FILE.
- What counts in practical life is how much, and at what costs, a particular
- algorithm (still more precisely: a particular implementation of a particular
- algorithm) will compress YOUR data.
- On the other hand, the theoretical limit to data compression has been
- established long ago, and challenging that makes about as much sense as
- challenging the laws of thermodynamics.
- What remains is finding algorithms that do more of the theoretically possible
- compression, for a wider range of statistics, at less costs: and here
- we should certainly remain open, nay, eager for any new development.
-
-
- --
- Kind regards, Elmar Folba
- Hamburg, Germany
- elmar@gulasch.hanse.de
-