python - In NER, does BERT only label tokens with OBI tags, type of entity unspecified?

Question

I want to do Name Entitiy Recognition (NER) by BERT. There are multiple types of entity (e.g Person, Company, Nation), so the tags would be B-PERSON, I-PERSON, B-COMPANY, I-COMPANY, O, and so on. However, BERT seems to label with O, B, and I only. Do I have to train two models for PERSON and COMPANY respectively? What's the common practice of OBI tagging using BERT?

question from:https://stackoverflow.com/questions/65644428/in-ner-does-bert-only-label-tokens-with-obi-tags-type-of-entity-unspecified

Answer 1

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