Pre-trained CombineNet-CTC models for the GRID audio-visual dataset with icefall.

The model was trained on full GRID with the scripts in icefall.
See (https://github.com/k2-fsa/icefall/tree/master/egs/grid/AVSR/combinenet_ctc_avsr) for more details of this model.

How to use

See (https://github.com/k2-fsa/icefall/blob/master/egs/grid/AVSR/combinenet_ctc_avsr/Pre-trained.md)

Training procedure

The main repositories are list below, we will update the training and decoding scripts with the update of version.
k2: https://github.com/k2-fsa/k2 icefall: https://github.com/k2-fsa/icefall

Install k2 and lhotse, k2 installation guide refers to https://k2.readthedocs.io/en/latest/installation/index.html, lhotse refers to https://lhotse.readthedocs.io/en/latest/getting-started.html#installation. I think the latest version would be ok. And please also install the requirements listed in icefall.
Clone icefall(https://github.com/k2-fsa/icefall) and check to the commit showed above.

git clone https://github.com/k2-fsa/icefall
cd icefall

Preparing data.

cd egs/grid/AVSR
bash ./prepare.sh

Training

export CUDA_VISIBLE_DEVICES="0"
python combinenet_ctc_avsr/train.py --world-size 1

Evaluation results

The best decoding results (WER) on GRID TEST are listed below, we got this result by averaging models from epoch 25 to 29, the decoding method is whole-lattice-rescoring, when lm scale is 0.01.

	TEST
WER	1.71%