cmix version 14 http://www.byronknoll.com/cmix.html Released by Byron Knoll on October 20, 2017. cmix is free software distributed under the GNU General Public License. In Linux or OS X, use "make" to compile cmix using g++. In Windows, cmix can be compiled with MinGW (http://nuwen.net/mingw.html) or Cygwin (https://www.cygwin.com). When running cmix, it is usually recommended to enable preprocessing with "dictionary/english.dic". cmix can only compress/decompress single files. To compress multiple files or directories, create an archive file using "tar" (or some similar tool). For some files, preprocessing using "precomp" may improve compression: https://github.com/schnaader/precomp-cpp Compiling with "-Ofast" will have the fastest performance, but might lead to incompatibility between different computers (due to floating-point precision differences). Compile with "-O3" to fix compatibility issues. Changes from version 13 to version 14: - LSTM performance optimizations and tuning - Changes from Márcio Pais: improved preprocessing and many PAQ8 model improvements - Disabled pretraining - New dictionary (from phda) Changes from version 12 to version 13: - Improved LSTM and SSE Changes from version 11 to version 12: - Replaced byte mixer with LSTM Changes from version 10 to version 11: - Added ppmd model - Memory tuning and bug fixes Changes from version 9 to version 10: - Learning rate decay tuning - Added "interval" context (adapted from MCM https://github.com/mathieuchartier/mcm) - Added "only preprocessing" compression option - Refactoring and memory tuning Changes from version 8 to version 9: - Improved Windows compatibility - Learning rate decay - New nonstationary state table - Bracket matching models - Minor bug fixes and memory tuning Changes from version 7 to version 8: - Added a recurrent backpropagation neural network to mix byte-level models - Added some PPM models - Memory tuning - Minor refactoring Changes from version 6 to version 7: - Fixed bug that caused cmix to crash in Windows - Tweaked word model - Added some image models (JPEG/BMP/TIFF) - Improved preprocessor (JPEG/BMP/text/EXE) Changes from version 5 to version 6: - Memory tuning - Removed PPM model Changes from version 4 to version 5: - Added dictionary pretraining - Removed dictionary from cmix binary - Integrated some code from paq8pxd_v12 into paq8l - Minor refactoring Changes from version 3 to version 4: - Added an additional mixer context (longest match length) - Implemented an additional PPM model - Integrated some code from paq8pxd_v11 into paq8l - Integrated mixer contexts from paqar into paq8l - Minor refactoring and tuning Changes from version 2 to version 3: - Merged paq8pxd code into paq8l - Optimized speed of cmix and paq8 mixers - Minor refactoring and tuning Changes from version 1 to version 2: - Memory tuning - Increase PPM order to 7 - Replaced dictionary with the one used by decmprs8 - Added paq8pxd_v7 models - Removed pic models - Added "facade" models to copy the paq8 model predictions to the cmix mixer