Generative knowledge graph construction: A review

H Ye, N Zhang, H Chen, H Chen - arXiv preprint arXiv:2210.12714, 2022 - arxiv.org
Generative Knowledge Graph Construction (KGC) refers to those methods that leverage the
sequence-to-sequence framework for building knowledge graphs, which is flexible and can …

Nested named entity recognition: a survey

Y Wang, H Tong, Z Zhu, Y Li - ACM Transactions on Knowledge …, 2022 - dl.acm.org
With the rapid development of text mining, many studies observe that text generally contains
a variety of implicit information, and it is important to develop techniques for extracting such …

Unified structure generation for universal information extraction

Y Lu, Q Liu, D Dai, X Xiao, H Lin, X Han, L Sun… - arXiv preprint arXiv …, 2022 - arxiv.org
Information extraction suffers from its varying targets, heterogeneous structures, and
demand-specific schemas. In this paper, we propose a unified text-to-structure generation …

Unified named entity recognition as word-word relation classification

J Li, H Fei, J Liu, S Wu, M Zhang, C Teng… - proceedings of the AAAI …, 2022 - ojs.aaai.org
So far, named entity recognition (NER) has been involved with three major types, including
flat, overlapped (aka. nested), and discontinuous NER, which have mostly been studied …

Text2Event: Controllable sequence-to-structure generation for end-to-end event extraction

Y Lu, H Lin, J Xu, X Han, J Tang, A Li, L Sun… - arXiv preprint arXiv …, 2021 - arxiv.org
Event extraction is challenging due to the complex structure of event records and the
semantic gap between text and event. Traditional methods usually extract event records by …

A unified generative framework for various NER subtasks

H Yan, T Gui, J Dai, Q Guo, Z Zhang, X Qiu - arXiv preprint arXiv …, 2021 - arxiv.org
Named Entity Recognition (NER) is the task of identifying spans that represent entities in
sentences. Whether the entity spans are nested or discontinuous, the NER task can be …

A unified MRC framework for named entity recognition

X Li, J Feng, Y Meng, Q Han, F Wu, J Li - arXiv preprint arXiv:1910.11476, 2019 - arxiv.org
The task of named entity recognition (NER) is normally divided into nested NER and flat
NER depending on whether named entities are nested or not. Models are usually separately …

Named entity recognition as dependency parsing

J Yu, B Bohnet, M Poesio - arXiv preprint arXiv:2005.07150, 2020 - arxiv.org
Named Entity Recognition (NER) is a fundamental task in Natural Language Processing,
concerned with identifying spans of text expressing references to entities. NER research is …

Locate and label: A two-stage identifier for nested named entity recognition

Y Shen, X Ma, Z Tan, S Zhang, W Wang… - arXiv preprint arXiv …, 2021 - arxiv.org
Named entity recognition (NER) is a well-studied task in natural language processing.
Traditional NER research only deals with flat entities and ignores nested entities. The span …

Boundary smoothing for named entity recognition

E Zhu, J Li - arXiv preprint arXiv:2204.12031, 2022 - arxiv.org
Neural named entity recognition (NER) models may easily encounter the over-confidence
issue, which degrades the performance and calibration. Inspired by label smoothing and …