| Parallel Instance Query Network for Named Entity Recognition | ✓ Link | 81.77 | PIQN | 2022-03-20 |
| DiffusionNER: Boundary Diffusion for Named Entity Recognition | ✓ Link | 81.53 | DiffusionNER | 2023-05-22 |
| An Embarrassingly Easy but Strong Baseline for Nested Named Entity Recognition | ✓ Link | 81.40 | CNN-NER | 2022-08-09 |
| Unified Named Entity Recognition as Word-Word Relation Classification | ✓ Link | 81.39 | W2NER | 2021-12-19 |
| Fusing Heterogeneous Factors with Triaffine Mechanism for Nested Named Entity Recognition | ✓ Link | 81.23 | Triaffine + BioBERT | 2021-10-14 |
| Locate and Label: A Two-stage Identifier for Nested Named Entity Recognition | ✓ Link | 80.54 | Locate and Label | 2021-05-14 |
| To be Continuous, or to be Discrete, Those are Bits of Questions | ✓ Link | 80.54 | Hashing | 2024-06-12 |
| Optimizing Bi-Encoder for Named Entity Recognition via Contrastive Learning | ✓ Link | 80.5 | BINDER | 2022-08-30 |
| A Sequence-to-Set Network for Nested Named Entity Recognition | ✓ Link | 80.44 | Sequence-to-Set | 2021-05-19 |
| BioBART: Pretraining and Evaluation of A Biomedical Generative Language Model | ✓ Link | 79.93 | BioBART | 2022-04-08 |
| A Unified Generative Framework for Various NER Subtasks | ✓ Link | 79.23 | BARTNER | 2021-06-02 |
| Pyramid: A Layered Model for Nested Named Entity Recognition | ✓ Link | 79.19 | Pyramid + BERT | 2020-07-01 |
| Nested Named Entity Recognition via Explicitly Excluding the Influence of the Best Path | ✓ Link | 78.93 | LogSumExpDecoder | 2021-08-01 |
| Neural Architectures for Nested NER through Linearization | ✓ Link | 78.31 | seq2seq+BERT+Flair | 2019-08-19 |
| Comparing and combining some popular NER approaches on Biomedical tasks | ✓ Link | 78.3 | SpanModel + SequenceLabelingModel | 2023-05-30 |
| Nested Named Entity Recognition with Partially-Observed TreeCRFs | ✓ Link | 78.2 | PO-TreeCRFs | 2020-12-15 |
| Pyramid: A Layered Model for Nested Named Entity Recognition | ✓ Link | 77.78 | Pyramid | 2020-07-01 |
| Nested Named Entity Recognition via Second-best Sequence Learning and Decoding | ✓ Link | 77.36 | Second-best learning and decoding + BERT + Flair | 2019-09-05 |
| Nested Named Entity Recognition via Second-best Sequence Learning and Decoding | ✓ Link | 77.19 | Second-best learning and decoding | 2019-09-05 |
| Nested Named Entity Recognition via Second-best Sequence Learning and Decoding | ✓ Link | 77.05 | Second-best learning and decoding + BERT | 2019-09-05 |
| Bipartite Flat-Graph Network for Nested Named Entity Recognition | ✓ Link | 76.0 | BiFlaG | 2020-05-01 |
| Neural Segmental Hypergraphs for Overlapping Mention Recognition | ✓ Link | 75.1 | Neural segmental hypergraphs | 2018-10-03 |
| Sequence-to-Nuggets: Nested Entity Mention Detection via Anchor-Region Networks | ✓ Link | 74.8 | Anchor-Region Networks | 2019-06-10 |
| A Neural Layered Model for Nested Named Entity Recognition | ✓ Link | 74.7 | Neural layered model | 2018-06-01 |
| A Boundary-aware Neural Model for Nested Named Entity Recognition | ✓ Link | 74.7 | Boundary-aware neural model | 2019-11-01 |
| A Neural Transition-based Model for Nested Mention Recognition | ✓ Link | 73.9 | Neural transition-based model | 2018-10-03 |