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Biomedical Named Entity Recognition (NER) is a fundamental task of Biomedical Natural Language Processing for extracting relevant information from biomedical texts, such as clinical records, scientific publications, and electronic health…

计算与语言 · 计算机科学 2023-12-27 Fahime Shahrokh , Nasser Ghadiri , Rasoul Samani , Milad Moradi

The state-of-the-art named entity recognition (NER) systems are supervised machine learning models that require large amounts of manually annotated data to achieve high accuracy. However, annotating NER data by human is expensive and…

计算与语言 · 计算机科学 2019-11-04 Jian Ni , Georgiana Dinu , Radu Florian

Network representation learning (NRL) methods aim to map each vertex into a low dimensional space by preserving the local and global structure of a given network, and in recent years they have received a significant attention thanks to…

机器学习 · 计算机科学 2018-10-17 Abdulkadir Çelikkanat , Fragkiskos D. Malliaros

For Named Entity Recognition (NER), sequence labeling-based and span-based paradigms are quite different. Previous research has demonstrated that the two paradigms have clear complementary advantages, but few models have attempted to…

计算与语言 · 计算机科学 2022-07-19 Bin Ji , Shasha Li , Jie Yu , Jun Ma , Huijun Liu

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…

计算与语言 · 计算机科学 2020-09-03 Jiuniu Wang , Wenjia Xu , Xingyu Fu , Guangluan Xu , Yirong Wu

Hierarchical structures are popular in recent vision transformers, however, they require sophisticated designs and massive datasets to work well. In this paper, we explore the idea of nesting basic local transformers on non-overlapping…

计算机视觉与模式识别 · 计算机科学 2022-01-03 Zizhao Zhang , Han Zhang , Long Zhao , Ting Chen , Sercan O. Arik , Tomas Pfister

We study the open-domain named entity recognition (NER) problem under distant supervision. The distant supervision, though does not require large amounts of manual annotations, yields highly incomplete and noisy distant labels via external…

计算与语言 · 计算机科学 2020-06-30 Chen Liang , Yue Yu , Haoming Jiang , Siawpeng Er , Ruijia Wang , Tuo Zhao , Chao Zhang

It has been shown that named entity recognition (NER) could benefit from incorporating the long-distance structured information captured by dependency trees. We believe this is because both types of features - the contextual information…

计算与语言 · 计算机科学 2021-04-13 Lu Xu , Zhanming Jie , Wei Lu , Lidong Bing

We present a novel deep-learning-based method to cluster words in documents which we apply to detect and recognize tables given the OCR output. We interpret table structure bottom-up as a graph of relations between pairs of words (belonging…

机器学习 · 计算机科学 2024-05-24 Marek Polewczyk , Marco Spinaci

A typical architecture for end-to-end entity linking systems consists of three steps: mention detection, candidate generation and entity disambiguation. In this study we investigate the following questions: (a) Can all those steps be…

计算与语言 · 计算机科学 2021-01-14 Samuel Broscheit

Named entity recognition (NER) for identifying proper nouns in unstructured text is one of the most important and fundamental tasks in natural language processing. However, despite the widespread use of NER models, they still require a…

计算与语言 · 计算机科学 2020-12-23 Zhifeng Hao , Di Lv , Zijian Li , Ruichu Cai , Wen Wen , Boyan Xu

Successful Machine Learning based Named Entity Recognition models could fail on texts from some special domains, for instance, Chinese addresses and e-commerce titles, where requires adequate background knowledge. Such texts are also…

计算与语言 · 计算机科学 2022-09-29 Xin Zhang , Yong Jiang , Xiaobin Wang , Xuming Hu , Yueheng Sun , Pengjun Xie , Meishan Zhang

Nowadays, many Natural Language Processing (NLP) tasks see the demand for incorporating knowledge external to the local information to further improve the performance. However, there is little related work on Named Entity Recognition (NER),…

计算与语言 · 计算机科学 2023-03-07 Chiao-Wei Hsu , Keh-Yih Su

Named Entity Recognition (NER) in Few-Shot setting is imperative for entity tagging in low resource domains. Existing approaches only learn class-specific semantic features and intermediate representations from source domains. This affects…

计算与语言 · 计算机科学 2022-03-29 Sarkar Snigdha Sarathi Das , Arzoo Katiyar , Rebecca J. Passonneau , Rui Zhang

Recent advances in Named Entity Recognition (NER) show that document-level contexts can significantly improve model performance. In many application scenarios, however, such contexts are not available. In this paper, we propose to find…

计算与语言 · 计算机科学 2022-12-09 Xinyu Wang , Yong Jiang , Nguyen Bach , Tao Wang , Zhongqiang Huang , Fei Huang , Kewei Tu

The dominant approaches for named entity recognition (NER) mostly adopt complex recurrent neural networks (RNN), e.g., long-short-term-memory (LSTM). However, RNNs are limited by their recurrent nature in terms of computational efficiency.…

计算与语言 · 计算机科学 2019-07-22 Hui Chen , Zijia Lin , Guiguang Ding , Jianguang Lou , Yusen Zhang , Borje Karlsson

Mining structured knowledge from tweets using named entity recognition (NER) can be beneficial for many down stream applications such as recommendation and intention understanding. With tweet posts tending to be multimodal, multimodal named…

计算与语言 · 计算机科学 2024-01-05 Peipei Liu , Hong Li , Yimo Ren , Jie Liu , Shuaizong Si , Hongsong Zhu , Limin Sun

Low dimensional embeddings that capture the main variations of interest in collections of data are important for many applications. One way to construct these embeddings is to acquire estimates of similarity from the crowd. However,…

机器学习 · 计算机科学 2018-03-30 Kun Ho Kim , Oisin Mac Aodha , Pietro Perona

Named entity recognition (NER) is a fundamental part of extracting information from documents in biomedical applications. A notable advantage of NER is its consistency in extracting biomedical entities in a document context. Although…

计算与语言 · 计算机科学 2022-10-25 Minbyul Jeong , Jaewoo Kang

Recent advancements in pre-trained language models (PLMs) have demonstrated that these models possess some degree of syntactic awareness. To leverage this knowledge, we propose a novel chart-based method for extracting parse trees from…

计算与语言 · 计算机科学 2023-06-02 Jiaxi Li , Wei Lu