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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 developed for the two tasks, since sequence labeling models,…

Computation and Language · Computer Science 2022-11-23 Xiaoya Li , Jingrong Feng , Yuxian Meng , Qinghong Han , Fei Wu , Jiwei Li

We present DualNER, a simple and effective framework to make full use of both annotated source language corpus and unlabeled target language text for zero-shot cross-lingual named entity recognition (NER). In particular, we combine two…

Computation and Language · Computer Science 2022-12-13 Jiali Zeng , Yufan Jiang , Yongjing Yin , Xu Wang , Binghuai Lin , Yunbo Cao

Many recent named entity recognition (NER) studies criticize flat NER for its non-overlapping assumption, and switch to investigating nested NER. However, existing nested NER models heavily rely on training data annotated with nested…

Computation and Language · Computer Science 2022-11-02 Enwei Zhu , Yiyang Liu , Ming Jin , Jinpeng Li

Named entity recognition (NER) is a fundamental task in natural language processing that involves identifying and classifying entities in sentences into pre-defined types. It plays a crucial role in various research fields, including entity…

Computation and Language · Computer Science 2024-04-29 Dongsheng Wang , Xiaoqin Feng , Zeming Liu , Chuan Wang

Named entity recognition (NER) is an extensively studied task that extracts and classifies named entities in a text. NER is crucial not only in downstream language processing applications such as relation extraction and question answering…

Computation and Language · Computer Science 2020-05-19 Gizem Aras , Didem Makaroglu , Seniz Demir , Altan Cakir

Here we present the training and evaluation of NanoNER, a Named Entity Recognition (NER) model for Nanobiology. NER consists in the identification of specific entities in spans of unstructured texts and is often a primary task in Natural…

Information Retrieval · Computer Science 2024-02-07 Martin Lentschat , Cyril Labbé , Ran Cheng

Disentangled representation is a powerful technique to tackle domain shift problem in medical image analysis in unsupervised domain adaptation setting.However, previous methods only focus on exacting domain-invariant feature and ignore…

Image and Video Processing · Electrical Eng. & Systems 2023-03-07 Shuai Wang , Rui Li

Named entity recognition (NER) is an important research problem in natural language processing. There are three types of NER tasks, including flat, nested and discontinuous entity recognition. Most previous sequential labeling models are…

Computation and Language · Computer Science 2023-03-21 Ying Mo , Hongyin Tang , Jiahao Liu , Qifan Wang , Zenglin Xu , Jingang Wang , Wei Wu , Zhoujun Li

Cross-domain NER is a challenging task to address the low-resource problem in practical scenarios. Previous typical solutions mainly obtain a NER model by pre-trained language models (PLMs) with data from a rich-resource domain and adapt it…

Computation and Language · Computer Science 2023-09-19 Xiang Chen , Lei Li , Shuofei Qiao , Ningyu Zhang , Chuanqi Tan , Yong Jiang , Fei Huang , Huajun Chen

Named Entity Recognition (NER) is a challenging task that extracts named entities from unstructured text data, including news, articles, social comments, etc. The NER system has been studied for decades. Recently, the development of Deep…

Computation and Language · Computer Science 2020-09-03 Jiuniu Wang , Wenjia Xu , Xingyu Fu , Guangluan Xu , Yirong Wu

Named Entity Recognition (NER) is the task of identifying and classifying named entities in large-scale texts into predefined classes. NER in French and other relatively limited-resource languages cannot always benefit from approaches…

Computation and Language · Computer Science 2023-01-13 Arjun Choudhry , Inder Khatri , Pankaj Gupta , Aaryan Gupta , Maxime Nicol , Marie-Jean Meurs , Dinesh Kumar Vishwakarma

Cross-lingual named entity recognition (NER) aims to train an NER system that generalizes well to a target language by leveraging labeled data in a given source language. Previous work alleviates the data scarcity problem by translating…

Computation and Language · Computer Science 2023-05-25 Tingting Ma , Qianhui Wu , Huiqiang Jiang , Börje F. Karlsson , Tiejun Zhao , Chin-Yew Lin

Named entity recognition (NER) is highly sensitive to sentential syntactic and semantic properties where entities may be extracted according to how they are used and placed in the running text. To model such properties, one could rely on…

Computation and Language · Computer Science 2020-10-30 Yuyang Nie , Yuanhe Tian , Yan Song , Xiang Ao , Xiang Wan

Named entity disambiguation (NED), which involves mapping textual mentions to structured entities, is particularly challenging in the medical domain due to the presence of rare entities. Existing approaches are limited by the presence of…

Computation and Language · Computer Science 2021-10-18 Maya Varma , Laurel Orr , Sen Wu , Megan Leszczynski , Xiao Ling , Christopher Ré

Named entity recognition is a key component of Information Extraction (IE), particularly in scientific domains such as biomedicine and chemistry, where large language models (LLMs), e.g., ChatGPT, fall short. We investigate the…

Computation and Language · Computer Science 2024-04-02 Hongyi Liu , Qingyun Wang , Payam Karisani , Heng Ji

Named Entity Recognition (NER) is a critical component of Natural Language Processing with diverse applications in information extraction and conversational AI. However, NER in specific domains for low-resource languages faces challenges…

Computational Engineering, Finance, and Science · Computer Science 2026-05-07 Do Minh Duc , Quan Xuan Truong , Viet Tran Hong , Le Hoang Anh , Mac Thi Minh Tra , Nguyen Van Thuy , Le Hai Ha , Vinh Nguyen Van

Named Entity Recognition and Disambiguation (NERD) systems have recently been widely researched to deal with the significant growth of the Web. NERD systems are crucial for several Natural Language Processing (NLP) tasks such as…

Computation and Language · Computer Science 2017-10-26 Sandro A. Coelho , Diego Moussallem , Gustavo C. Publio , Diego Esteves

Distantly-Supervised Named Entity Recognition (DS-NER) effectively alleviates the data scarcity problem in NER by automatically generating training samples. Unfortunately, the distant supervision may induce noisy labels, thus undermining…

Computation and Language · Computer Science 2022-12-14 Xiaoye Qu , Jun Zeng , Daizong Liu , Zhefeng Wang , Baoxing Huai , Pan Zhou

Nested Named Entity Recognition (NNER) focuses on addressing overlapped entity recognition. Compared to Flat Named Entity Recognition (FNER), annotated resources are scarce in the corpus for NNER. Data augmentation is an effective approach…

Computation and Language · Computer Science 2024-06-19 Xingming Liao , Nankai Lin , Haowen Li , Lianglun Cheng , Zhuowei Wang , Chong Chen

Research on overlapped and discontinuous named entity recognition (NER) has received increasing attention. The majority of previous work focuses on either overlapped or discontinuous entities. In this paper, we propose a novel span-based…

Computation and Language · Computer Science 2021-06-29 Fei Li , Zhichao Lin , Meishan Zhang , Donghong Ji