Comments (3)
Hi Fran,
I just noticed this issue right now, but I think maybe I can help with this for Chinese
.
Perhaps something like
PASS
to basically return whatever was input andREPL
for removing punctuation.
If I understand correctly, this is used to separate the valid chars from punctuations. Generally, punctuations should not
be considered for AM training for Chinese. But some punctuations like ?!
are usually involved strong emotions, thus differ from declarative sentence ended with 。
I think punctuations removal should be taken carefully and should take the transcripts into account.
Another option would be something like CB for check Unicode Block.
I think we can select the valid chars from punctuations for Chinese
based on the hex number of unicode.
from commonvoice-utils.
for Chinese, are you mostly training byte-based models, or pinyin/phone-based?
I think it depends. For hybrid system, a pronunciation lexicon is demand to map each character
to pinyin most times; while E2E
system is lexicon-free and we can adopt BPE
as modeling unit. To be honest, my current research interest is not focus on Chinese ASR, but I think people would make their choice of modeling unit selection based on their demands, i.e. model/algorithm to further improve.
from commonvoice-utils.
For punctuation it would be interesting to see the effect of adding them in or not. For many acoustic models, I worry that the kind of information needed for predicting the final punctuation might be quite a long way away from where it needs to be predicted, e.g. maybe intonation difference is clear in the middle of the utterance, but the question mark needs to be predicted at the end.
On the other hand I think that this is an empirical question and could be determined by trying to train a model with and without and looking at the errors.
I think that the "check block" is a nicer example, it would allow us to exclude transcripts which include Latin characters for example. Also, for Chinese, are you mostly training byte-based models, or pinyin/phone-based?
from commonvoice-utils.
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from commonvoice-utils.