by Dmitry Shkarin. Dmitry is the author of PPMd, a well know compressor. PPM is a powerful compression technology which has a reputation for being resource intensive. In this paper Dmitry adds bells and whistles to basic PPM and gets fantastic results.

Reader jcp said: Big problem: algorithm very slow, it’s impractical to search anything inside of compressed files (compared with gzip), .. But it’s good to send/receive letters of e-mail, well compressed!!!

http://DataCompression.info/Miscellaneous/PPMII_DCC02.pdf