{"action":"created","issue":{"url":"https://api.github.com/repos/kaldi-asr/kaldi/issues/666","repository_url":"https://api.github.com/repos/kaldi-asr/kaldi","labels_url":"https://api.github.com/repos/kaldi-asr/kaldi/issues/666/labels{/name}","comments_url":"https://api.github.com/repos/kaldi-asr/kaldi/issues/666/comments","events_url":"https://api.github.com/repos/kaldi-asr/kaldi/issues/666/events","html_url":"https://github.com/kaldi-asr/kaldi/pull/666","id":146454888,"number":666,"title":"Online nnet3 code","user":{"login":"realill","id":8237297,"avatar_url":"https://avatars.githubusercontent.com/u/8237297?v=3","gravatar_id":"","url":"https://api.github.com/users/realill","html_url":"https://github.com/realill","followers_url":"https://api.github.com/users/realill/followers","following_url":"https://api.github.com/users/realill/following{/other_user}","gists_url":"https://api.github.com/users/realill/gists{/gist_id}","starred_url":"https://api.github.com/users/realill/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/realill/subscriptions","organizations_url":"https://api.github.com/users/realill/orgs","repos_url":"https://api.github.com/users/realill/repos","events_url":"https://api.github.com/users/realill/events{/privacy}","received_events_url":"https://api.github.com/users/realill/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":34,"created_at":"2016-04-06T22:40:01Z","updated_at":"2016-04-13T16:28:36Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/kaldi-asr/kaldi/pulls/666","html_url":"https://github.com/kaldi-asr/kaldi/pull/666","diff_url":"https://github.com/kaldi-asr/kaldi/pull/666.diff","patch_url":"https://github.com/kaldi-asr/kaldi/pull/666.patch"},"body":""},"comment":{"url":"https://api.github.com/repos/kaldi-asr/kaldi/issues/comments/209532363","html_url":"https://github.com/kaldi-asr/kaldi/pull/666#issuecomment-209532363","issue_url":"https://api.github.com/repos/kaldi-asr/kaldi/issues/666","id":209532363,"user":{"login":"jcsilva","id":5527148,"avatar_url":"https://avatars.githubusercontent.com/u/5527148?v=3","gravatar_id":"","url":"https://api.github.com/users/jcsilva","html_url":"https://github.com/jcsilva","followers_url":"https://api.github.com/users/jcsilva/followers","following_url":"https://api.github.com/users/jcsilva/following{/other_user}","gists_url":"https://api.github.com/users/jcsilva/gists{/gist_id}","starred_url":"https://api.github.com/users/jcsilva/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jcsilva/subscriptions","organizations_url":"https://api.github.com/users/jcsilva/orgs","repos_url":"https://api.github.com/users/jcsilva/repos","events_url":"https://api.github.com/users/jcsilva/events{/privacy}","received_events_url":"https://api.github.com/users/jcsilva/received_events","type":"User","site_admin":false},"created_at":"2016-04-13T16:28:36Z","updated_at":"2016-04-13T16:28:36Z","body":"When we tested this code with iVectors, we have not seen that huge degradation in WER.\r\n\r\nWe ran it again today, using the following syntax for online recognition :\r\n\r\nonline2-wav-nnet3-latgen-faster --verbose=3 --online=true --ivector-extraction-config=exp/online/nnet_online_alt_mixed_sp/conf/ivector_extractor.conf --max-active=7000 --beam=15.0 --lattice-beam=8.0 --acoustic-scale=1.0 --frame-subsampling-factor=$(cat exp/chain/tdnn_6z_sp/frame_subsampling_factor) --feature-type=mfcc --mfcc-config=exp/online/nnet_online_alt_mixed_sp/conf/mfcc.conf exp/chain/tdnn_6z_sp/final.mdl exp/chain/tdnn_6z_sp/graph_smallest/HCLG.fst ark:data/data8k_hires/spk2utt scp:data/data8k_hires/wav.scp ark:- 2>online.log | lattice-scale --acoustic-scale=10 ark:- ark:- | gzip -c > online/lat.1.gz; echo 1 > exp/online/num_jobs\r\n\r\nAnd the reported online WER was 20.14%.\r\n\r\nWe also tried offline recognition:\r\n\r\nonline2-wav-nnet3-latgen-faster --verbose=3 --online=false --ivector-extraction-config=exp/online/nnet_online_alt_mixed_sp/conf/ivector_extractor.conf --max-active=7000 --beam=15.0 --lattice-beam=8.0 --acoustic-scale=1.0 --frame-subsampling-factor=$(cat exp/chain/tdnn_6z_sp/frame_subsampling_factor) --feature-type=mfcc --mfcc-config=exp/online/nnet_online_alt_mixed_sp/conf/mfcc.conf exp/chain/tdnn_6z_sp/final.mdl exp/chain/tdnn_6z_sp/graph_smallest/HCLG.fst ark:data/data8k_hires/spk2utt scp:data/data8k_hires/wav.scp ark:- 2>offline.log | lattice-scale --acoustic-scale=10 ark:- ark:- | gzip -c > offline/lat.1.gz; echo 1 > offline/num_jobs\r\n\r\nThe offline WER was 19.57%.\r\n\r\n"}}