Chunking on CoNLL 2000

Metric: Exact Span F1 (higher is better)

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#	Model↕	Exact Span F1▼	Extra Data	Paper	Date↕	Code
1	ACE	97.3	No	Automated Concatenation of Embeddings for Struct...	2020-10-10	Code
2	BERT-CRF (Replicated in AdaSeq)	97.18	No	Improving Named Entity Recognition by External C...	2021-05-08	Code
3	ELMo + MAT + Multi-Task	97.04	Yes	-	-	-
4	CVT+Multi-Task+Large	96.98	Yes	-	-	-
5	ELMo + Multi-Task	96.83	Yes	-	-	-
6	Flair	96.72	Yes	-	-	Code
7	SeqVAT	95.45	No	-	-	-
8	Adversarial Training	95.25	No	Robust Multilingual Part-of-Speech Tagging via A...	2017-11-14	Code
9	BiLSTM-CRF	95.18	No	Robust Multilingual Part-of-Speech Tagging via A...	2017-11-14	Code

#1ACESOTA
97.3
Exact Span F1· 2020-10-10
Automated Concatenation of Embeddings for Structured Prediction Code
#2BERT-CRF (Replicated in AdaSeq)
97.18
Exact Span F1· 2021-05-08
Improving Named Entity Recognition by External Context Retrieving and Cooperative Learning Code
#3ELMo + MAT + Multi-Task
97.04
Exact Span F1· Extra Data
No paper
#4CVT+Multi-Task+Large
96.98
Exact Span F1· Extra Data
No paper
#5ELMo + Multi-Task
96.83
Exact Span F1· Extra Data
No paper
#6Flair
96.72
Exact Span F1· Extra Data
No paperCode
#7SeqVAT
95.45
Exact Span F1
No paper
#8Adversarial TrainingSOTA
95.25
Exact Span F1· 2017-11-14
Robust Multilingual Part-of-Speech Tagging via Adversarial Training Code
#9BiLSTM-CRF
95.18
Exact Span F1· 2017-11-14
Robust Multilingual Part-of-Speech Tagging via Adversarial Training Code