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Nested Named Entity Recognition on ACE 2005

86.9F1 ScoreBERT-MRC
61.21267.88174.5581.219Sep 5, 2019Dec 20, 2019Apr 4, 2020Jul 19, 2020Nov 2, 2020Feb 16, 2021Jun 2, 2021

Evaluation results

MethodLinks
BERT-MRCAdditional Supervision=true2020.1286.987.286.6
BERT-MRC2019.1086.8887.1686.59
Yu, Bohnet, and PoesioAdditional Supervision=true2020.1285.485.285.6
PO-TreeCRFsEncoder=BERT2020.1285.484.586.4
BARTNER (Word)Backbone=BART-Large, Entity Representation=Word2021.0684.7483.1686.38
PyramidEncoder=BERT2020.1284.78485.4
PO-TreeCRFsEncoder=BERT, Ablation=Change Biaffine to Bilinear2020.1284.78386.5
Wang et al. (2020a)Backbone=BERT-Large, Configuration=Fair comparison2021.0684.6683.9585.39
Yu et al. (2020)Backbone=BERT-Large, Reproduction=Sentence-level context only2021.0684.6184.584.72
PO-TreeCRFsEncoder=BERT, Ablation=W/o. Structure Smoothing2020.1284.683.585.8
Li et al. (2020b)Backbone=BERT-Large, Reproduction=Rerun code2021.0684.5785.0184.13
PO-TreeCRFsEncoder=BERT, Ablation=W/o. Potential Normalization and Structure Smoothing2020.1284.482.786.2
Second-best Sequence Learning and DecodingWord Embeddings=BERT+FLAIR2019.0984.3483.8384.87
Straková et al. (2019)Word Embeddings=BERT+FLAIR2019.0984.3383.4885.21
Seq2seq-BERT2019.1084.33——
PO-TreeCRFsEncoder=BERT, Ablation=W/o. TreeCRFs2020.1284.18286.4
Second-best Sequence Learning and DecodingWord Embeddings=BERT2019.0983.9983.384.69
Shibuya and Hovy (2020)Backbone=BERT-Large, Reproduction=Rerun code2021.0683.9983.384.69
BENSCEncoder=BERT2020.1283.983.883.9
Straková et al. (2019)Word Embeddings=BERT, Use POS tags=true2019.0983.4282.5884.29
Straková et al. (2019)Backbone=BERT-Large2021.0683.42——
Seq2seqEncoder=Pretrained LM2020.1283.4——
DYGIEAdditional Supervision=true2020.1282.9——
Luan et al. (2019)Backbone=ELMo2021.0682.9——
DYGIE2019.1082.9——
BARTNER (BPE)Backbone=BART-Large, Entity Representation=BPE2021.0682.7582.0883.44
Path-BERT2019.1082.782.9882.42
Fisher and Vlachos (2019)Word Embeddings=BERT2019.0982.482.782.1
MLEncoder=BERT2020.1282.482.782.1
Merge-BERT2019.1082.482.782.1
BARTNER (Span)Backbone=BART-Large, Entity Representation=Span2021.0682.3181.4183.24
PyramidEncoder=None2020.1279.48078.9
MLEncoder=ELMo2020.1278.979.778
MGNEREncoder=ELMo2020.1278.27977.3
Second-best Sequence Learning and DecodingWord Embeddings=None2019.0976.8378.2775.44
BENSCEncoder=None2020.1275.677.174.2
Straková et al. (2019)Word Embeddings=None, Use POS tags=true2019.0975.3676.3574.39
Lin et al. (2019)Word Embeddings=None, Use POS tags=true2019.0974.976.273.6
ARN2019.1074.976.273.6
Fisher and Vlachos (2019)Word Embeddings=None2019.0974.675.174.1
MLEncoder=None2020.1274.675.174.1
Wang and Lu (2018)Word Embeddings=None, Use POS tags=true2019.0974.576.872.3
SHEncoder=None, c=n2020.1274.576.872.3
Seg-Graph2019.1074.576.872.3
Wang et al. (2018)Word Embeddings=None, Use POS tags=true2019.097374.571.5
TransitionEncoder=None2020.127374.571.5
Ju et al. (2018)Word Embeddings=None2019.0972.274.270.3
Cascaded-CRFEncoder=None2020.1272.274.270.3
FOFEEncoder=None, c=62020.127176.566.3
Katiyar and Cardie (2018)Word Embeddings=None2019.0970.570.670.4
Hyper-Graph2019.1070.570.670.4
LSTM-CRFEncoder=None2020.1262.270.355.7