Any example to use CRF on custom training

[pinedbean]

I'm googling a lot of example of BiLSTM-CRF

but can't find an example one to do BiLSTM-CRF on tensorflow 2.2+

I also try to import
from tensorflow_addons.layers import CRF

but it can't find CRF

[bhack]

Have you looked at https://stackoverflow.com/questions/59019290/how-to-add-crf-layer-in-a-tensorflow-sequential-model?

[bhack]

This could be also a duplicate of:
#337
#1769

[pinedbean]

Yes, I'm looking on that one already

Here is what I try to implement

CRF

log_likelihood, self.transition_params = tfa.text.crf_log_likelihood(logits,
label_sequences,
text_lens,
transition_params=self.transition_params)

And decode as

viterbi_path, _ = tfa.text.viterbi_decode(logit, model.transition_params)

But the result seem incorrect (all possibility go from 'O' -> 'O' when decode (try to do NER)

I'm not sure that I implement it correct or not

[bhack]

There are already two tickets about CRF example/documentation request. Please post there.