scm - context model - last code update 2011
scm is a simple command line tool to compress individual files using bitwise context modelling. for every input bit scm creates a set of individual predictions which get mixed together using logistic mixing.
models: ppm, match, record, indirect, sparse, word, sse
using ~1gb of memory scm compresses calgary.tar (14 files 3.152.896 bytes) to 622.290 bytes (1.579bpb).