Named Entity Recognition (NER)

Named Entity Recognition (NER) is a task of Natural Language Processing (NLP) that involves identifying and classifying named entities in a text into predefined categories such as person names, organizations, locations, and others. The goal of NER is to extract structured information from unstructured text data and represent it in a machine-readable format. Approaches typically use BIO notation, which differentiates the beginning (B) and the inside (I) of entities. O is used for non-entity tokens.

Example:

| Mark | Watney | visited | Mars | | --- | ---| --- | --- | | B-PER | I-PER | O | B-LOC |

( Image credit: Zalando )

Papers

Recently Added Most Hyped Most Active Needs Verification Most Verified

Showing 501–525 of 2874 papers

Title	Date	Tasks	Status
Bayesian Modeling of Lexical Resources for Low-Resource Settings	Jul 1, 2017	Low Resource Named Entity Recognitionnamed-entity-recognition	—Unverified
Biomolecular Event Extraction using a Stacked Generalization based Classifier	Dec 1, 2016	Edge DetectionEvent Extraction	—Unverified
An Empirical Study of Discriminative Sequence Labeling Models for Vietnamese Text Processing	Aug 30, 2017	Feature Engineeringnamed-entity-recognition	—Unverified
AdaK-NER: An Adaptive Top-K Approach for Named Entity Recognition with Incomplete Annotations	Sep 11, 2021	named-entity-recognitionNamed Entity Recognition	—Unverified
An Empirical Study of Automatic Chinese Word Segmentation for Spoken Language Understanding and Named Entity Recognition	Jun 1, 2016	Automatic Speech Recognition (ASR)Chinese Word Segmentation	—Unverified
Batch IS NOT Heavy: Learning Word Representations From All Samples	Jul 1, 2018	AllDocument Classification	—Unverified
A Corpus Study and Annotation Schema for Named Entity Recognition and Relation Extraction of Business Products	Apr 7, 2020	named-entity-recognitionNamed Entity Recognition	—Unverified
BiTeM at WNUT 2020 Shared Task-1: Named Entity Recognition over Wet Lab Protocols using an Ensemble of Contextual Language Models	Nov 1, 2020	named-entity-recognitionNamed Entity Recognition	—Unverified
Bitext Name Tagging for Cross-lingual Entity Annotation Projection	Dec 1, 2016	named-entity-recognitionNamed Entity Recognition	—Unverified
BLAR: Biomedical Local Acronym Resolver	Jun 1, 2021	named-entity-recognitionNamed Entity Recognition	—Unverified
Chinese Named Entity Recognition via Adaptive Multi-pass Memory Network with Hierarchical Tagging Mechanism	Oct 1, 2020	Chinese Named Entity Recognitionnamed-entity-recognition	—Unverified
Chinese Grammatical Error Diagnosis by Conditional Random Fields	Jul 1, 2015	Named Entity Recognition (NER)	—Unverified
Adversarial Structured Prediction for Multivariate Measures	Dec 20, 2017	named-entity-recognitionNamed Entity Recognition	—Unverified
Chinese Grammatical Error Diagnosis with Long Short-Term Memory Networks	Dec 1, 2016	Information RetrievalLanguage Modeling	—Unverified
An Emergency Medical Services Clinical Audit System driven by Named Entity Recognition from Deep Learning	Jul 7, 2020	named-entity-recognitionNamed Entity Recognition	—Unverified
Bangla Natural Language Processing: A Comprehensive Analysis of Classical, Machine Learning, and Deep Learning Based Methods	May 31, 2021	ArticlesBIG-bench Machine Learning	—Unverified
Academic Case Reports Lack Diversity: Assessing the Presence and Diversity of Sociodemographic and Behavioral Factors related to Post COVID-19 Condition	Jan 21, 2025	Data AugmentationDiversity	—Unverified
Chinese Hypernym-Hyponym Extraction from User Generated Categories	Dec 1, 2016	Knowledge GraphsMachine Translation	—Unverified
Chinese Named Entity Recognition with Graph-based Semi-supervised Learning Model	Jul 1, 2015	Chinese Named Entity Recognitionnamed-entity-recognition	—Unverified
Chunking Clinical Text Containing Non-Canonical Language	Jun 1, 2014	ChunkingConstituency Parsing	—Unverified
Biomedical Named Entity Recognition via Reference-Set Augmented Bootstrapping	Jun 1, 2019	Data Augmentationnamed-entity-recognition	—Unverified
Bacteria Biotope Detection, Ontology-based Normalization, and Relation Extraction using Syntactic Rules	Aug 1, 2013	Coreference ResolutionInformation Retrieval	—Unverified
An Element-wise Visual-enhanced BiLSTM-CRF Model for Location Name Recognition	Nov 1, 2020	Image Retrievalnamed-entity-recognition	—Unverified
A Corpus of Tables in Full-Text Biomedical Research Publications	Dec 1, 2016	Entity LinkingNamed Entity Recognition (NER)	—Unverified
Chemical detection and indexing in PubMed full text articles using deep learning and rule-based methods	Nov 8, 2021	ArticlesChemical Indexing	—Unverified

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All datasets CoNLL 2003 (English)Ontonotes v5 (English)NCBI Disease WNUT 2017 ACE 2005 JNLPBA BC5CDR GENIA BC2GM BC5CDR-chemical SLUE CoNLL++

Benchmark Results

#	Model	Metric	Claimed	Verified	Status
1	ACE + document-context	F1	94.6	—	Unverified
2	LUKE 483M	F1	94.3	—	Unverified
3	Co-regularized LUKE	F1	94.22	—	Unverified
4	LUKE + SubRegWeigh (K-means)	F1	94.2	—	Unverified
5	ASP+T5-3B	F1	94.1	—	Unverified
6	FLERT XLM-R	F1	94.09	—	Unverified
7	PL-Marker	F1	94	—	Unverified
8	CL-KL	F1	93.85	—	Unverified
9	XLNet-GCN	F1	93.82	—	Unverified
10	RoBERTa + SubRegWeigh (K-means)	F1	93.81	—	Unverified

#	Model	Metric	Claimed	Verified	Status
1	BERT-MRC+DSC	F1	92.07	—	Unverified
2	PL-Marker	F1	91.9	—	Unverified
3	Baseline + BS	F1	91.74	—	Unverified
4	Biaffine-NER	F1	91.3	—	Unverified
5	BERT-MRC	F1	91.11	—	Unverified
6	PIQN	F1	90.96	—	Unverified
7	HGN	F1	90.92	—	Unverified
8	Syn-LSTM + BERT (wo doc-context)	F1	90.85	—	Unverified
9	DiffusionNER	F1	90.66	—	Unverified
10	W2NER	F1	90.5	—	Unverified

#	Model	Metric	Claimed	Verified	Status
1	BioBERT	F1	89.71	—	Unverified
2	SpanModel + SequenceLabelingModel	F1	89.6	—	Unverified
3	SciFive-Base	F1	89.39	—	Unverified
4	Spark NLP	F1	89.13	—	Unverified
5	BLSTM-CNN-Char (SparkNLP)	F1	89.13	—	Unverified
6	KeBioLM	F1	89.1	—	Unverified
7	CL-KL	F1	88.96	—	Unverified
8	BioKMNER + BioBERT	F1	88.77	—	Unverified
9	BioLinkBERT (large)	F1	88.76	—	Unverified
10	CompactBioBERT	F1	88.67	—	Unverified

#	Model	Metric	Claimed	Verified	Status
1	CL-KL	F1	60.45	—	Unverified
2	RoBERTa + SubRegWeigh (K-means)	F1	60.29	—	Unverified
3	BERT-CRF (Replicated in AdaSeq)	F1	59.69	—	Unverified
4	RoBERTa-BiLSTM-context	F1	59.61	—	Unverified
5	BERT + RegLER	F1	58.9	—	Unverified
6	TNER -xlm-r-large	F1	58.5	—	Unverified
7	HGN	F1	57.41	—	Unverified
8	ASA + RoBERTa	F1	57.3	—	Unverified
9	BERTweet	F1	56.5	—	Unverified
10	MINER	F1	54.86	—	Unverified

#	Model	Metric	Claimed	Verified	Status
1	Ours: cross-sentence ALB	F1	90.9	—	Unverified
2	GoLLIE	F1	89.6	—	Unverified
3	PromptNER [RoBERTa-large]	F1	88.26	—	Unverified
4	PIQN	F1	87.42	—	Unverified
5	PromptNER [BERT-large]	F1	87.21	—	Unverified
6	DiffusionNER	F1	86.93	—	Unverified
7	BERT-MRC	F1	86.88	—	Unverified
8	UniNER-7B	F1	86.69	—	Unverified
9	Locate and Label	F1	86.67	—	Unverified
10	BoningKnife	F1	85.46	—	Unverified

#	Model	Metric	Claimed	Verified	Status
1	KeBioLM	F1	82	—	Unverified
2	BLSTM-CNN-Char (SparkNLP)	F1	81.29	—	Unverified
3	Spark NLP	F1	81.29	—	Unverified
4	BINDER	F1	80.3	—	Unverified
5	BioMobileBERT	F1	80.13	—	Unverified
6	BioLinkBERT (large)	F1	80.06	—	Unverified
7	DistilBioBERT	F1	79.97	—	Unverified
8	CompactBioBERT	F1	79.88	—	Unverified
9	BioDistilBERT	F1	79.1	—	Unverified
10	PubMedBERT uncased	F1	79.1	—	Unverified

#	Model	Metric	Claimed	Verified	Status
1	BINDER	F1	91.9	—	Unverified
2	ConNER	F1	91.3	—	Unverified
3	CL-L2	F1	90.99	—	Unverified
4	aimped	F1	90.95	—	Unverified
5	BertForTokenClassification (Spark NLP)	F1	90.89	—	Unverified
6	BioLinkBERT (large)	F1	90.22	—	Unverified
7	ELECTRAMed	F1	90.03	—	Unverified
8	BLSTM-CNN-Char (SparkNLP)	F1	89.73	—	Unverified
9	Spark NLP	F1	89.73	—	Unverified
10	UniNER-7B	F1	89.34	—	Unverified