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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…

计算与语言 · 计算机科学 2022-08-08 Jianlin Su , Ahmed Murtadha , Shengfeng Pan , Jing Hou , Jun Sun , Wanwei Huang , Bo Wen , Yunfeng Liu

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,…

信息检索 · 计算机科学 2017-10-31 Diego Esteves , Rafael Peres , Jens Lehmann , Giulio Napolitano

There has been a growing academic interest in the recognition of nested named entities in many domains. We tackle the task with a novel local hypergraph-based method: We first propose start token candidates and generate corresponding…

计算与语言 · 计算机科学 2022-05-24 Yukun Yan , Sen Song

Transformer-based pre-trained language models (PLMs) have dramatically improved the state of the art in NLP across many tasks. This has led to substantial interest in analyzing the syntactic knowledge PLMs learn. Previous approaches to this…

计算与语言 · 计算机科学 2020-10-20 Bowen Li , Taeuk Kim , Reinald Kim Amplayo , Frank Keller

There is a recent interest in investigating few-shot NER, where the low-resource target domain has different label sets compared with a resource-rich source domain. Existing methods use a similarity-based metric. However, they cannot make…

计算与语言 · 计算机科学 2021-06-04 Leyang Cui , Yu Wu , Jian Liu , Sen Yang , Yue Zhang

State of the art Named Entity Recognition (NER) models have achieved an impressive ability to extract common phrases from text that belong to labels such as location, organization, time, and person. However, typical NER systems that rely on…

计算与语言 · 计算机科学 2024-01-24 Alexandra Loessberg-Zahl

Sequential labeling-based NER approaches restrict each word belonging to at most one entity mention, which will face a serious problem when recognizing nested entity mentions. In this paper, we propose to resolve this problem by modeling…

计算与语言 · 计算机科学 2019-06-11 Hongyu Lin , Yaojie Lu , Xianpei Han , Le Sun

Named Entity Recognition (NER) is an essential precursor task for many natural language applications, such as relation extraction or event extraction. Much of the NER research has been done on datasets with few classes of entity types (e.g.…

计算与语言 · 计算机科学 2020-09-17 Parul Awasthy , Taesun Moon , Jian Ni , Radu Florian

Discontinuous constituent parsers have always lagged behind continuous approaches in terms of accuracy and speed, as the presence of constituents with discontinuous yield introduces extra complexity to the task. However, a discontinuous…

计算与语言 · 计算机科学 2021-09-14 Daniel Fernández-González , Carlos Gómez-Rodríguez

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…

信息检索 · 计算机科学 2018-11-27 Sammy Khalife , Michalis Vazirgiannis

We introduce a method for unsupervised parsing that relies on bootstrapping classifiers to identify if a node dominates a specific span in a sentence. There are two types of classifiers, an inside classifier that acts on a span, and an…

计算与语言 · 计算机科学 2022-03-22 Nickil Maveli , Shay B. Cohen

Named Entity Recognition (NER) is the task of identifying and classifying named entities in unstructured text. In the legal domain, named entities of interest may include the case parties, judges, names of courts, case numbers, references…

计算与语言 · 计算机科学 2020-12-21 Stavroula Skylaki , Ali Oskooei , Omar Bari , Nadja Herger , Zac Kriegman

Non-local features have been exploited by syntactic parsers for capturing dependencies between sub output structures. Such features have been a key to the success of state-of-the-art statistical parsers. With the rise of deep learning,…

计算与语言 · 计算机科学 2018-08-29 Zhiyang Teng , Yue Zhang

Named Entity Recognition (NER) involves identifying and categorizing named entities within textual data. Despite its significance, NER research has often overlooked low-resource languages like Myanmar (Burmese), primarily due to the lack of…

计算与语言 · 计算机科学 2025-04-08 Kaung Lwin Thant , Kwankamol Nongpong , Ye Kyaw Thu , Thura Aung , Khaing Hsu Wai , Thazin Myint Oo

In the last years, the consolidation of deep neural network architectures for information extraction in document images has brought big improvements in the performance of each of the tasks involved in this process, consisting of text…

计算机视觉与模式识别 · 计算机科学 2020-05-05 Manuel Carbonell , Alicia Fornés , Mauricio Villegas , Josep Lladós

Named entity recognition is a fundamental task in natural language processing, identifying the span and category of entities in unstructured texts. The traditional sequence labeling methodology ignores the nested entities, i.e. entities…

计算与语言 · 计算机科学 2022-10-24 Xueru Wen , Changjiang Zhou , Haotian Tang , Luguang Liang , Yu Jiang , Hong Qi

Diverse Natural Language Processing tasks employ constituency parsing to understand the syntactic structure of a sentence according to a phrase structure grammar. Many state-of-the-art constituency parsers are proposed, but they may provide…

计算与语言 · 计算机科学 2023-07-04 Adithya Kulkarni , Nasim Sabetpour , Alexey Markin , Oliver Eulenstein , Qi Li

Named Entity Recognition (NER) is a well and widely studied task in natural language processing. Recently, the nested NER has attracted more attention since its practicality and difficulty. Existing works for nested NER ignore the…

计算与语言 · 计算机科学 2023-05-15 Yawen Yang , Xuming Hu , Fukun Ma , Shu'ang Li , Aiwei Liu , Lijie Wen , Philip S. Yu

Named entity recognition (NER) is a well-established task of information extraction which has been studied for decades. More recently, studies reporting NER experiments on social media texts have emerged. On the other hand, stance detection…

计算与语言 · 计算机科学 2017-08-01 Dilek Küçük

The increasing number of protein sequences decoded from genomes is opening up new avenues of research on linking protein sequence to function with transformer neural networks. Recent research has shown that the number of known protein…

机器学习 · 计算机科学 2022-06-23 Anowarul Kabir , Amarda Shehu