<p>I added in line 313 in hmm_train_main.cpp an 's'  because I guess it should be labels_file and not label_file, right?<br>
Now I get this error:<br>
[FATAL] Unknown extension '' for HMM model file.<br>
Do I have to give a hmm model? I pass a number of hidden states. So this shouldn't be needed, right?</p>

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