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Named Entity Recognition (NER) is a sequence classification Natural Language Processing task where entities are identified in the text and classified into predefined categories. It acts as a foundation for most information extraction…

Computation and Language · Computer Science 2024-02-19 Aravinth Sivaganeshan , Nisansa de Silva

Named Entity Recognition (NER) is a well researched NLP task and is widely used in real world NLP scenarios. NER research typically focuses on the creation of new ways of training NER, with relatively less emphasis on resources and…

Computation and Language · Computer Science 2022-05-05 Sowmya Vajjala , Ramya Balasubramaniam

Recognizing named entities (NEs) is commonly conducted as a classification problem that predicts a class tag for a word or a NE candidate in a sentence. In shallow structures, categorized features are weighted to support the prediction.…

Computation and Language · Computer Science 2022-02-01 Yanping Chen , Lefei Wu , Qinghua Zheng , Ruizhang Huang , Jun Liu , Liyuan Deng , Junhui Yu , Yongbin Qing , Bo Dong , Ping Chen

This paper presents a novel framework, MGNER, for Multi-Grained Named Entity Recognition where multiple entities or entity mentions in a sentence could be non-overlapping or totally nested. Different from traditional approaches regarding…

Computation and Language · Computer Science 2020-04-06 Congying Xia , Chenwei Zhang , Tao Yang , Yaliang Li , Nan Du , Xian Wu , Wei Fan , Fenglong Ma , Philip Yu

Inspired by recent advances in retrieval augmented methods in NLP~\citep{khandelwal2019generalization,khandelwal2020nearest,meng2021gnn}, in this paper, we introduce a $k$ nearest neighbor NER ($k$NN-NER) framework, which augments the…

Computation and Language · Computer Science 2022-04-01 Shuhe Wang , Xiaoya Li , Yuxian Meng , Tianwei Zhang , Rongbin Ouyang , Jiwei Li , Guoyin Wang

Named entity recognition (NER) is a well-studied task in natural language processing. However, the widely-used sequence labeling framework is difficult to detect entities with nested structures. In this work, we view nested NER as…

Computation and Language · Computer Science 2020-12-16 Yao Fu , Chuanqi Tan , Mosha Chen , Songfang Huang , Fei Huang

Deep learning has yielded state-of-the-art performance on many natural language processing tasks including named entity recognition (NER). However, this typically requires large amounts of labeled data. In this work, we demonstrate that the…

Computation and Language · Computer Science 2018-02-06 Yanyao Shen , Hyokun Yun , Zachary C. Lipton , Yakov Kronrod , Animashree Anandkumar

Named entity recognition (NER) is the task to detect and classify the entity spans in the text. When entity spans overlap between each other, this problem is named as nested NER. Span-based methods have been widely used to tackle the nested…

Computation and Language · Computer Science 2022-09-16 Hang Yan , Yu Sun , Xiaonan Li , Xipeng Qiu

We study the problem of named entity recognition (NER) based on demonstration learning in low-resource scenarios. We identify two issues in demonstration construction and model training. Firstly, existing methods for selecting demonstration…

Computation and Language · Computer Science 2025-07-23 Guowen Yuan , Tien-Hsuan Wu , Lianghao Xia , Ben Kao

Deep neural network models have helped named entity (NE) recognition achieve amazing performance without handcrafting features. However, existing systems require large amounts of human annotated training data. Efforts have been made to…

Information Retrieval · Computer Science 2020-10-06 Ying Luo , Hai Zhao , Junlang Zhan

Named entity recognition, and other information extraction tasks, frequently use linguistic features such as part of speech tags or chunkings. For languages where word boundaries are not readily identified in text, word segmentation is a…

Computation and Language · Computer Science 2017-03-30 Nanyun Peng , Mark Dredze

Named entity recognition (NER) is widely used in natural language processing applications and downstream tasks. However, most NER tools target flat annotation from popular datasets, eschewing the semantic information available in nested…

Computation and Language · Computer Science 2019-06-05 Nicky Ringland , Xiang Dai , Ben Hachey , Sarvnaz Karimi , Cecile Paris , James R. Curran

We propose a new Named entity recognition (NER) method to effectively make use of the results of Part-of-speech (POS) tagging, Chinese word segmentation (CWS) and parsing while avoiding NER error caused by POS tagging error. This paper…

Computation and Language · Computer Science 2021-01-28 Xiao Fu , Guijun Zhang

Named entity discovery (NED) is an important information retrieval problem that can be decomposed into two sub-problems. The first sub-problem, named entity recognition (NER), aims to tag pre-defined sets of words in a vocabulary (called…

Information Retrieval · Computer Science 2018-11-27 Sammy Khalife , Michalis Vazirgiannis

Training a Named Entity Recognition (NER) model often involves fixing a taxonomy of entity types. However, requirements evolve and we might need the NER model to recognize additional entity types. A simple approach is to re-annotate entire…

Motivation: State-of-the-art biomedical named entity recognition (BioNER) systems often require handcrafted features specific to each entity type, such as genes, chemicals and diseases. Although recent studies explored using neural network…

Information Retrieval · Computer Science 2018-10-09 Xuan Wang , Yu Zhang , Xiang Ren , Yuhao Zhang , Marinka Zitnik , Jingbo Shang , Curtis Langlotz , Jiawei Han

Most existing named entity recognition (NER) approaches are based on sequence labeling models, which focus on capturing the local context dependencies. However, the way of taking one sentence as input prevents the modeling of non-sequential…

Computation and Language · Computer Science 2021-06-03 Zanbo Wang , Wei Wei , Xianling Mao , Shanshan Feng , Pan Zhou , Zhiyong He , Sheng Jiang

We conducted a human subject study of named entity recognition on a noisy corpus of conversational music recommendation queries, with many irregular and novel named entities. We evaluated the human NER linguistic behaviour in these…

Computation and Language · Computer Science 2023-03-14 Elena V. Epure , Romain Hennequin

Recent advances in prompt-based learning have shown strong results on few-shot text classification by using cloze-style templates. Similar attempts have been made on named entity recognition (NER) which manually design templates to predict…

Computation and Language · Computer Science 2022-04-01 Dong-Ho Lee , Akshen Kadakia , Kangmin Tan , Mahak Agarwal , Xinyu Feng , Takashi Shibuya , Ryosuke Mitani , Toshiyuki Sekiya , Jay Pujara , Xiang Ren

Named entity recognition (NER) task aims at identifying entities from a piece of text that belong to predefined semantic types such as person, location, organization, etc. The state-of-the-art solutions for flat entities NER commonly suffer…

Computation and Language · Computer Science 2022-08-08 Jianlin Su , Ahmed Murtadha , Shengfeng Pan , Jing Hou , Jun Sun , Wanwei Huang , Bo Wen , Yunfeng Liu