Using topo_lm

[zulkarneev]

Hi, I tried to use topo_lm in mkgraph_ctc.sh. I converted arpa ngram model to fst and used it. Adding it does not give better WER. I tried 1g, 2g models, 6gram model gives an error in decoder. Can I find more information about using topo_lm somewhere?

[GNroy]

Hi @zulkarneev,
topo_lm is intended for CTC-MMI models. It won't do any good to the regular CTC model.
Further reading: https://arxiv.org/abs/2110.03098