Fix Inconsistent NER Grouping (Pipeline) (#4987)
* Add B I handling to grouping
* Add fix to include separate entity as last token
* move last_idx definition outside loop
* Use first entity in entity group as reference for entity type
* Add test cases
* Take out extra class accidentally added
* Return tf ner grouped test to original
* Take out redundant last entity
* Get last_idx safely
Co-authored-by: ColleterVi <36503688+ColleterVi@users.noreply.github.com>
* Fix first entity comment
* Create separate functions for group_sub_entities and group_entities (splitting call method to testable functions)
* Take out unnecessary last_idx
* Remove additional forward pass test
* Move token classification basic tests to separate class
* Move token classification basic tests back to monocolumninputtestcase
* Move base ner tests to nerpipelinetests
* Take out unused kwargs
* Add back mandatory_keys argument
* Add unitary tests for group_entities in _test_ner_pipeline
* Fix last entity handling
* Fix grouping fucntion used
* Add typing to group_sub_entities and group_entities
Co-authored-by: ColleterVi <36503688+ColleterVi@users.noreply.github.com>
