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- Path: sparky!uunet!paladin.american.edu!news.univie.ac.at!hp4at!mcsun!sun4nl!ruuinf!accucx!nevries
- From: nevries@accucx.cc.ruu.nl (Nico E de Vries)
- Newsgroups: comp.compression
- Subject: Re: non-dictionary, non-statistical compression
- Keywords: DMC PPM compression context state
- Message-ID: <3345@accucx.cc.ruu.nl>
- Date: 23 Nov 92 17:36:21 GMT
- References: <10003@blue.cis.pitt.edu.UUCP>
- Organization: Academic Computer Centre Utrecht
- Lines: 27
-
- In <10003@blue.cis.pitt.edu.UUCP> mchst12@cislabs.pitt.edu (Mark C Hahn) writes:
-
- >We seem to have lots of sources available for various versions of
- >LZ-derived dictionary methods, and some statistical ones using
- >Huffman coding, arithmetic, etc. Does anyone know of sources
- >some of the other techniques described in Cleary,Witten&Bell?
-
- In a way almost all compression routines are derivates of the
- "dynamic markov modeller". LZ compression and Huffman, Arithmetic
- compressions are just subsets of this. Others include higher
- order methods which are statistic, just like Huffman and
- Arithmetic compressors, but use more info from the past
- to predict the next character. A nice example of a compressor
- which doesn't look like LZ, Huffman and Arithmetic compression
- is the Finish compressor in my LDS_10 package. It is however
- also member of the Markov family.
-
- >thanks, Mark.
-
- Nico E. de Vries (nevries@cc.ruu.nl) |------------------* AA III PPP
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- To get (many) ==> LOSSLESS DATA COMPRESSION SOURCES <== get lds_10.zip at
- garbo.uwasa.fi /pc/programming. Make files for Borland C are included.
-