4-gram rescoring
4-gram Lattice Rescoring

4g-lat is a tool allowing to rescore Sphinx word-lattices using quadrigram language models. It is based on the CMU s3_dag tool distributed with CMU Sphinx 3.5 decoder, that we modified to enable the use of quadrigram LMs.

Quadrigram LMs have to be compiled with the appropriate tool (lm4g2dmp) distributed by LIUM.

The tools were developed for the 3.3 version of the fast decoder. They should be compatible with more recent 3.x versions, although this has not been tested yet.

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