train_lm_small-data.sh in egs/letsgo-15d
egs/letsgo-15d trains LM on very small 5 hours dataset and hence needs train_lm_small-data.sh at egs/letsgo-15d/local/train_lm.sh.
Kaldi's LM toolkit has train_lm.sh
but not train_lm_small-data.sh
Fix: Make a copy of train_lm.sh
in your kaldi_lm
installation and reduce the value of heldout_sent