Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!rutgers!seismo!uunet!pcrat!rick From: rick@pcrat.UUCP Newsgroups: comp.sources.wanted,comp.sources.d Subject: Arithmetic Coding for Data Compression Message-ID: <335@pcrat.UUCP> Date: Wed, 10-Jun-87 22:01:11 EDT Article-I.D.: pcrat.335 Posted: Wed Jun 10 22:01:11 1987 Date-Received: Sat, 13-Jun-87 06:38:57 EDT Organization: PC Research, Inc., Tinton Falls, NJ Lines: 16 Keywords: CACM June 1987 Xref: utgpu comp.sources.wanted:1168 comp.sources.d:762 I typed in the data compression program found in CACM June 1987, pg 520. The compression of the adaptive model shown was slightly better than UNIX "pack", but worse than "compress". But the program is very small, and uses almost no memory. I'd like to find a better model to go with the coding algorithm. Perhaps something that predicts the next character frequency based on the current character. Any pointers or source code would be appreciated. -- Rick Richardson, President, PC Research, Inc. (201) 922-1134 (voice, nights) OR (201) 834-1378 (voice, days) seismo!uunet!pcrat!rick ihnp4!castor!pcrat!rick