Nested Named Entity Recognition
44 papers with code • 6 benchmarks • 11 datasets
Nested named entity recognition is a subtask of information extraction that seeks to locate and classify nested named entities (i.e., hierarchically structured entities) mentioned in unstructured text (Source: Adapted from Wikipedia).
Benchmarks
These leaderboards are used to track progress in Nested Named Entity Recognition
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Datasets
GENIA
ACE 2005
ACE 2004
NNE
GUM
Chilean Waiting List
The QUAERO French Medical Corpus
Latest papers
Propose-and-Refine: A Two-Stage Set Prediction Network for Nested Named Entity Recognition
XiPotatonium/pnr
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In the refine stage, proposals interact with each other, and richer contextual information is incorporated into the proposal representations.
Boundary Smoothing for Named Entity Recognition
syuoni/eznlp
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ACL 2022
Neural named entity recognition (NER) models may easily encounter the over-confidence issue, which degrades the performance and calibration.
BioBART: Pretraining and Evaluation of A Biomedical Generative Language Model
GanjinZero/BioBART
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BioNLP (ACL) 2022
Furthermore, we conduct ablation studies on the pretraining tasks for BioBART and find that sentence permutation has negative effects on downstream tasks.
Automatic Extraction of Nested Entities in Clinical Referrals in Spanish
plncmm/acm_health_msen
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ACM Transactions on Computing for Healthcare 2022
The annotated corpus, clinical word embeddings, annotation guidelines, and neural models are freely released to the community.
Parallel Instance Query Network for Named Entity Recognition
Each instance query predicts one entity, and by feeding all instance queries simultaneously, we can query all entities in parallel.
Nested Named Entity Recognition as Latent Lexicalized Constituency Parsing
louchao98/nner_as_parsing
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ACL 2022
They treat nested entities as partially-observed constituency trees and propose the masked inside algorithm for partial marginalization.
Unified Named Entity Recognition as Word-Word Relation Classification
ljynlp/w2ner
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So far, named entity recognition (NER) has been involved with three major types, including flat, overlapped (aka.
Fusing Heterogeneous Factors with Triaffine Mechanism for Nested Named Entity Recognition
GanjinZero/Triaffine-nested-ner
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Findings (ACL) 2022
To fuse these heterogeneous factors, we propose a novel triaffine mechanism including triaffine attention and scoring.
Bottom-Up Constituency Parsing and Nested Named Entity Recognition with Pointer Networks
sustcsonglin/pointer-net-for-nested
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ACL 2022
Constituency parsing and nested named entity recognition (NER) are similar tasks since they both aim to predict a collection of nested and non-crossing spans.
Nested Named Entity Recognition via Explicitly Excluding the Influence of the Best Path
speedcell4/nersted
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ACL 2021
This paper presents a novel method for nested named entity recognition.
