Hi, I'm experiencing this error while decoding Librispeech with Conformer model.
./conformer_ctc/decode.py --exp-dir conformer_ctc/exp_500_att0.8 \
--lang-dir data/lang_bpe_500 \
--max-duration 30 \
--concatenate-cuts 0 \
--bucketing-sampler true \
--num-paths 1000 \
--epoch 5 \
--avg 1 \
--method attention-decoder \
--nbest-scale 0.5
2021-11-26 19:08:00,025 INFO [decode.py:549] Decoding started
2021-11-26 19:08:00,026 INFO [decode.py:550] {
'subsampling_factor': 4, 'vgg_frontend': False, 'use_feat_batchnorm': True, 'feature_dim': 80, 'nhead': 8,
'attention_dim': 512, 'num_decoder_layers': 6, 'search_beam': 20, 'output_beam': 8, 'min_active_states': 30,
'max_active_states': 10000, 'use_double_scores': True,
'env_info': {'k2-version': '1.10', 'k2-build-type': 'Release', 'k2-with-cuda': True,
'k2-git-sha1': 'fd5565d32ffa8274ff9700453b1e543f34343ed1', 'k2-git-date': 'Wed Nov 10 08:31:12 2021',
'lhotse-version': '0.12.0.dev+git.d5e7815.dirty', 'torch-cuda-available': True, 'torch-cuda-version': '11.2',
'python-version': '3.8', 'icefall-git-branch': 'master', 'icefall-git-sha1': 'b945223-dirty',
'icefall-git-date': 'Thu Nov 11 03:26:02 2021', 'icefall-path': '/home/audiodan/asr/icefall',
'k2-path': '/home/audiodan/anaconda3/lib/python3.8/site-packages/k2-1.10.dev20211112+cuda11.2.torch1.10.0a0-py3.8-linux-x86_64.egg/k2/__init__.py',
'lhotse-path': '/home/audiodan/asr/lhotse/lhotse/init.py'},
'epoch': 5, 'avg': 1, 'method': 'attention-decoder', 'num_paths': 1000, 'nbest_scale': 0.5, 'export': False,
'exp_dir': PosixPath('conformer_ctc/exp_500_att0.8'), 'lang_dir': PosixPath('data/lang_bpe_500'),
'lm_dir': PosixPath('data/lm'), 'full_libri': True, 'feature_dir': PosixPath('data/fbank'), 'max_duration': 30,
'bucketing_sampler': True, 'num_buckets': 30, 'concatenate_cuts': False, 'duration_factor': 1.0, 'gap': 1.0,
'on_the_fly_feats': False, 'shuffle': True, 'return_cuts': True, 'num_workers': 10
}
2021-11-26 19:08:00,218 INFO [lexicon.py:176] Loading pre-compiled data/lang_bpe_500/Linv.pt
2021-11-26 19:08:00,253 INFO [decode.py:560] device: cpu
2021-11-26 19:08:01,984 INFO [decode.py:597] Loading G_4_gram.fst.txt
2021-11-26 19:08:01,984 WARNING [decode.py:598] It may take 8 minutes.
Traceback (most recent call last):
File "./conformer_ctc/decode.py", line 704, in <module>
main()
File "/home/audiodan/anaconda3/lib/python3.8/site-packages/torch/autograd/grad_mode.py", line 28, in decorate_context
return func(*args, **kwargs)
File "./conformer_ctc/decode.py", line 615, in main
G["dummy"] = 1
TypeError: 'Fsa' object does not support item assignment
Hi, I'm experiencing this error while decoding Librispeech with Conformer model.