MingLunHan / CIF-ColDec

[ICASSP 2022] Improving End-to-End Contextual Speech Recognition with Fine-Grained Contextual Knowledge Selection

Home Page:https://ieeexplore.ieee.org/abstract/document/9747101

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CIF-ColDec

Collaborative decoding (ColDec) is proposed to customize the CIF-based ASR models. The application of ColDec in the field of ASR contextualization, customization and personalization is the first attempt to integrate textual knowledge or contents using token-level acoustic representations in the CIF-based models.

This repository includes all supporting information of paper IMPROVING END-TO-END CONTEXTUAL SPEECH RECOGNITION WITH FINE-GRAINED CONTEXTUAL KNOWLEDGE SELECTION https://ieeexplore.ieee.org/document/9747101 (which has been accepted for presentation at IEEE ICASSP 2022) for the convenience of reproductivity and comparison.

If you have any questions, please consult hanminglun1996@foxmail.com .

1. Datasets

Note that all biasing lists are session-level, because each utterance in one test set shares the same biasing list. All our contextual biasing experiments are for open-domain scenarios where biasing phrases may appear in any textual context.

a. LibriSpeech Public Dataset

Files in data directory are simulated session-level biasing phrases for test-clean and test-other, respectively. Details about LibriSpeech test sets and biasing lists are listed as follows:

Details test-clean test-other
Number of biasing utterances 955 1032
Number of total utterances 2620 2939
Number of all phrases in biasing list 1171 1129
Coverage (%) (# of all biasing words in references / # of all words in references) 2.74 2.78

b. In-house Large-scale 160k Hours Dataset

The in-house 160k hours ASR datasets contains Chinese Mandarin audios and English audios. Most of the data are self-collected and manually labeled. Audios are collected from some common acoustic scenarios and videos. Its test sets are collected from internal real meetings. The names of participants and the terms of aritificial intelligence, pattern recognition, signal processing, are treated as contextual information. Details about the in-house test sets and biasing lists are listed as follows:

Details test-name test-term
Number of biasing utterances 654 916
Number of total utterances 748 1219
Number of distractors in biasing list 600 1775
Number of all phrases in biasing list 633 2415
Rare Ratio (%) (# of rare target phrases / # of all target phrases) 78.79 39.53
Type of biasing phrases name term
Coverage (%) (# of all biasing tokens in references / # of all tokens in references) 18.7 35.5

Here are some examples of test-term:

  1. 波峰我最多我希望只拿到他的一个 包络线 (Target biasing phrases: 包络线)

  2. 然后我得到文本序列以后我有可能进一步进步 数据挖掘 意图识别 视频识别 句法分析 等等等等 (Target biasing phrases: 数据挖掘、意图识别、句法分析)

  3. 汉字是由 象形文字 发展而来的因此可以采用类似于图像识别的方式对汉字进行 形近字挖掘 (Target biasing phrases: 象形文字、形近字挖掘)

Here are some examples of test-name:

  1. 肇兴 一起加进来我们聊一下数据合规性的事吧 (Target biasing phrases: 肇兴)

  2. 所以你刚刚举的 张小花 这个我觉得不是一个特别典型的一个例子吧但是的确是其中的一种情况(Target biasing phrases: 张小花)

2. Configurations

Complete Configuration files in config directory cover all experiments on LibriSpeech. The learning rate scheduler is shown as follows:

3. Results on LibriSpeech

4. References

[1] CIF-based Collaborative Decoding for End-to-End Contextual Speech Recognition https://ieeexplore.ieee.org/document/9415054

[2] Improving End-to-End Contextual Speech Recognition with Fine-Grained Contextual Knowledge Selection https://ieeexplore.ieee.org/document/9747101

[3] CIF: Continuous Integrate-and-Fire for End-to-End Speech Recognition https://ieeexplore.ieee.org/document/9054250

5. Other CIF Resources

a. Papers:

ASR:

ASR Contextualization & Customization & Personalization:

Low-resource Speech Recognition:

Non-autoregressive ASR:

Speech Translation:

b. Repositories:

6. Citing ColDec

If you are inspired by ColDec or need to cite it, please use following format.

a. Original ColDec:

@INPROCEEDINGS{9415054,
  author={Han, Minglun and Dong, Linhao and Zhou, Shiyu and Xu, Bo},
  booktitle={ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, 
  title={Cif-Based Collaborative Decoding for End-to-End Contextual Speech Recognition}, 
  year={2021},
  volume={},
  number={},
  pages={6528-6532},
  doi={10.1109/ICASSP39728.2021.9415054}
}

b. Enhanced ColDec with Fine-grained Knowledge:

@INPROCEEDINGS{9747101,  
  author={Han, Minglun and Dong, Linhao and Liang, Zhenlin and Cai, Meng and Zhou, Shiyu and Ma, Zejun and Xu, Bo},  
  booktitle={ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},  
  title={Improving End-to-End Contextual Speech Recognition with Fine-Grained Contextual Knowledge Selection}, 
  year={2022},  
  volume={}, 
  number={}, 
  pages={8532-8536}, 
  doi={10.1109/ICASSP43922.2022.9747101}
}