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In this paper, we propose a novel bipartite flat-graph network (BiFlaG) for nested named entity recognition (NER), which contains two subgraph modules: a flat NER module for outermost entities and a graph module for all the entities located…

Information Retrieval · Computer Science 2020-05-04 Ying Luo , Hai Zhao

Named Entity Recognition (NER) is an important subtask of information extraction that seeks to locate and recognise named entities. Despite recent achievements, we still face limitations in correctly detecting and classifying entities,…

Information Retrieval · Computer Science 2018-09-07 Diego Esteves

In this work, we propose a two-stage method for named entity recognition (NER), especially for nested NER. We borrowed the idea from the two-stage Object Detection in computer vision and the way how they construct the loss function. First,…

Computation and Language · Computer Science 2021-01-28 Bing Li

Recognizing entities in texts is a central need in many information-seeking scenarios, and indeed, Named Entity Recognition (NER) is arguably one of the most successful examples of a widely adopted NLP task and corresponding NLP technology.…

Computation and Language · Computer Science 2023-10-24 Uri Katz , Matan Vetzler , Amir DN Cohen , Yoav Goldberg

Although named entity recognition (NER) helps us to extract domain-specific entities from text (e.g., artists in the music domain), it is costly to create a large amount of training data or a structured knowledge base to perform accurate…

Computation and Language · Computer Science 2023-06-07 Kosuke Nishida , Naoki Yoshinaga , Kyosuke Nishida

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

As a fundamental natural language processing task and one of core knowledge extraction techniques, named entity recognition (NER) is widely used to extract information from texts for downstream tasks. Nested NER is a branch of NER in which…

Computation and Language · Computer Science 2022-04-19 Yifei Yang , Zuchao Li , Hai Zhao

Named Entity Recognition (NER) is an important subtask of information extraction that seeks to locate and recognise named entities. Despite recent achievements, we still face limitations with correctly detecting and classifying entities,…

Information Retrieval · Computer Science 2017-10-31 Diego Esteves , Rafael Peres , Jens Lehmann , Giulio Napolitano

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

Named Entity Recognition (NER) is a key component in NLP systems for question answering, information retrieval, relation extraction, etc. NER systems have been studied and developed widely for decades, but accurate systems using deep neural…

Computation and Language · Computer Science 2019-12-12 Vikas Yadav , Steven Bethard

Named Entity Recognition (NER) is a key step in the creation of structured data from digitised historical documents. Traditional NER approaches deal with flat named entities, whereas entities often are nested. For example, a postal address…

Information Retrieval · Computer Science 2023-02-22 Solenn Tual , Nathalie Abadie , J Chazalon , Bertrand Duménieu , Edwin Carlinet

Named Entity Recognition (NER) performance often degrades rapidly when applied to target domains that differ from the texts observed during training. When in-domain labelled data is available, transfer learning techniques can be used to…

Computation and Language · Computer Science 2020-05-01 Pierre Lison , Aliaksandr Hubin , Jeremy Barnes , Samia Touileb

Named Entity Recognition seeks to extract substrings within a text that name real-world objects and to determine their type (for example, whether they refer to persons or organizations). In this survey, we first present an overview of…

Computation and Language · Computer Science 2024-12-23 Imed Keraghel , Stanislas Morbieu , Mohamed Nadif

We propose two neural network architectures for nested named entity recognition (NER), a setting in which named entities may overlap and also be labeled with more than one label. We encode the nested labels using a linearized scheme. In our…

Computation and Language · Computer Science 2019-08-20 Jana Straková , Milan Straka , Jan Hajič

The most common Named Entity Recognizers are usually sequence taggers trained on fully annotated corpora, i.e. the class of all words for all entities is known. Partially annotated corpora, i.e. some but not all entities of some types are…

Computation and Language · Computer Science 2022-04-21 Michael Strobl , Amine Trabelsi , Osmar Zaiane

Named entity recognition (NER) is used to extract information from various documents and texts such as names and dates. It is important to extract education and work experience information from resumes in order to filter them. Considering…

Computation and Language · Computer Science 2023-06-23 Ege Kesim , Aysu Deliahmetoglu

Motivation: Named Entity Recognition (NER) is a key task to support biomedical research. In Biomedical Named Entity Recognition (BioNER), obtaining high-quality expert annotated data is laborious and expensive, leading to the development of…

Computation and Language · Computer Science 2023-05-23 Liangping Ding , Giovanni Colavizza , Zhixiong Zhang

Named entity recognition (NER) remains challenging when entity mentions can be discontinuous. Existing methods break the recognition process into several sequential steps. In training, they predict conditioned on the golden intermediate…

Computation and Language · Computer Science 2021-11-29 Yucheng Wang , Bowen Yu , Hongsong Zhu , Tingwen Liu , Nan Yu , Limin Sun

Acknowledgments in scientific papers may give an insight into aspects of the scientific community, such as reward systems, collaboration patterns, and hidden research trends. The aim of the paper is to evaluate the performance of different…

Computation and Language · Computer Science 2022-06-23 Nina Smirnova , Philipp Mayr

Named Entity Recognition (NER) is an important task in natural language processing that aims to identify and extract key entities from unstructured text. We present a novel application of NER in plasma physics research articles and address…

Computation and Language · Computer Science 2026-02-13 Muhammad Haris , Hans Höft , Markus M. Becker , Markus Stocker