C++, Matlab and Python library for Hidden-state Conditional Random Fields. Implements 3 algorithms: LDCRF, HCRF and CRF. For Windows and Linux, 32- and 64-bits. Optimized for multi-threading. Works with sparse or dense input features. Features Matlab Binaries of the latest version (3.0a) are included in the matlab toolbox: MLToolbox (as seen here: https://sourceforge.net/projects/mltoolbox/)HCRF_f