Unrestricted open-source Java implementation of the PPM (prediction by partial matching) algorithm for text and data compression by Bob Carpenter. Builds with ant.
http://www.colloquial.com/ArithmeticCoding/
Detailed narrative fully describes how a file is actually deflated, or compressed to get rid of redundancy - and save space.
http://www.howstuffworks.com/file-compression.htm
By Shinji Wakasugi. A simple method for lossless image compression using switched linear prediction. Report in PDF with code in C.
http://www3.tokai.or.jp/sjw/compress/compress.html
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