6 Commits

Author	SHA1	Message	Date
Zengwei Yao	d12e6f098c	Get (start, end) timestamps for CTC models (#876) ... * parse timestamps and texts for BPE-based models * parse timestamps (frame indexes) and texts for other cases * add test functions * add parse_fsa_timestamps_and_texts function, test in conformer_ctc3/decode.py * calculate symbol delay for (start, end) timestamps	2023-02-07 21:43:16 +08:00
Zengwei Yao	5a05b95730	add params.hlg_scale (#880)	2023-02-06 23:21:46 +08:00
Zengwei Yao	b25c234c51	Add Zipformer-MMI (#746) ... * Minor fix to conformer-mmi * Minor fixes * Fix decode.py * add training files * train with ctc warmup * add pruned_transducer_stateless7_mmi * add zipformer_mmi/mmi_decode.py, using HP as decoding graph * add mmi_decode.py * remove pruned_transducer_stateless7_mmi * rename zipformer_mmi/train_with_ctc.py as zipformer_mmi/train.py * remove unused method * rename mmi_decode.py * add export.py pretrained.py jit_pretrained.py ... * add RESULTS.md * add CI test * add docs * add README.md Co-authored-by: pkufool <wkang.pku@gmail.com>	2022-12-11 21:30:39 +08:00
Wei Kang	c25c8c6ad1	Add need_repeat_flag in phone based ctc graph compiler (#727) ... * Fix is_repeat_token in icefall * Fix phone based recipe * Update egs/librispeech/ASR/conformer_ctc3/train.py Co-authored-by: Fangjun Kuang <csukuangfj@gmail.com> * Fix black Co-authored-by: Fangjun Kuang <csukuangfj@gmail.com>	2022-12-04 17:20:17 +08:00
Zengwei Yao	8eb4b9d96d	Combining rnnt loss and k2-ctc loss for Dan's Zipformer (#683) ... * init files * add ctc as auxiliary loss and ctc_decode.py * tuning the scalar of HLG score for 1best, nbest and nbest-oracle * rename to pruned_transducer_stateless7_ctc * fix doc * fix bug, recover the hlg scores * modify ctc_decode.py, move out the hlg scale * fix hlg_scale * add export.py and pretrained.py, and so on * upload files, update README.md and RESULTS.md * add CI test	2022-12-03 19:01:10 +08:00
Zengwei Yao	ece728d895	Apply delay penalty on k2 ctc loss (#669) ... * add init files * fix bug, apply delay penalty * fix decoding code and getting timestamps * add option applying delay penalty on ctc log-prob * fix bug of streaming decoding * minor change for bpe-based case * add test_model.py * add README.md * add CI	2022-11-28 22:34:02 +08:00