How to implement huggingface BERT + CRF layer?
Hi

I wonder how to add CRF layer to a pretrained BERT model? Do I have to overwrite the loss function in the trainer? I really need some help on this, thank you.
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Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/master/CONTRIBUTING.md) are likely to be ignored.<|||||>Hello, thanks for opening an issue! We try to keep the github issues for bugs/feature requests.
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Thanks!<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/master/CONTRIBUTING.md) are likely to be ignored.