OpenGrm Libraries

OpenGrm is a collection of open-source libraries for constructing, combining, applying and searching formal grammars including:

• NGram Library: creates and modifies n-gram language models encoded as weighted finite-state transducers (FSTs),

• Thrax Grammar Compiler: compiles grammars expressed as regular expressions and context-dependent rewrite rules into weighted finite-state transducers.

These libraries use the OpenFst library for their underlying finite-state models.