Flashlight decoder for ASR about nemo

[titu1994]

Yes it's supported, please find installation instructions here - https://docs.nvidia.com/nemo-framework/user-guide/latest/nemotoolkit/asr/asr_language_modeling.html#n-gram-language-modeling

That bash script has to be run by users as is, rather than python to install flashlight

[Mark-Serin]

I followed this guide but it refers to scrips that don't exist anymore. For example the following script is not relevant already:

python eval_beamsearch_ngram.py nemo_model_file=<path to the .nemo file of the model> \
       input_manifest=<path to the evaluation JSON manifest file \
       kenlm_model_file=<path to the binary KenLM model> \
       beam_width=[<list of the beam widths, separated with commas>] \
       beam_alpha=[<list of the beam alphas, separated with commas>] \
       beam_beta=[<list of the beam betas, separated with commas>] \
       preds_output_folder=<optional folder to store the predictions> \
       probs_cache_file=null \
       decoding_mode=beamsearch_ngram \
       decoding_strategy="<Beam library such as beam, pyctcdecode or flashlight>"

because there is no eval_breamsearch_ngram.py here.

[titu1994]

@karpnv could you update docs ?

[Mark-Serin]

NeMo of previous versions has it but there are no such parameters as decoding_strategy. I mean it can't be used as flashlight. And even in older versions of NeMo it's absent. For example in 1.18.0