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Sequential labeling is a task predicting labels for each token in a sequence, such as Named Entity Recognition (NER). NER tasks aim to extract entities and predict their labels given a text, which is important in information extraction.…

计算与语言 · 计算机科学 2024-06-06 Jianfeng He , Linlin Yu , Shuo Lei , Chang-Tien Lu , Feng 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…

计算与语言 · 计算机科学 2020-04-06 Congying Xia , Chenwei Zhang , Tao Yang , Yaliang Li , Nan Du , Xian Wu , Wei Fan , Fenglong Ma , Philip Yu

To tackle Named Entity Recognition (NER) tasks, supervised methods need to obtain sufficient cleanly annotated data, which is labor and time consuming. On the contrary, distantly supervised methods acquire automatically annotated data using…

计算与语言 · 计算机科学 2019-12-05 Shifeng Liu , Yifang Sun , Bing Li , Wei Wang , Xiang Zhao

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 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…

计算与语言 · 计算机科学 2024-04-29 Dongsheng Wang , Xiaoqin Feng , Zeming Liu , Chuan Wang

We present a novel approach to named entity recognition (NER) in the presence of scarce data that we call example-based NER. Our train-free few-shot learning approach takes inspiration from question-answering to identify entity spans in a…

计算与语言 · 计算机科学 2020-08-25 Morteza Ziyadi , Yuting Sun , Abhishek Goswami , Jade Huang , Weizhu Chen

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…

计算与语言 · 计算机科学 2023-03-21 Ying Mo , Hongyin Tang , Jiahao Liu , Qifan Wang , Zenglin Xu , Jingang Wang , Wei Wu , Zhoujun Li

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

Named entity recognition (NER) is an information extraction technique that aims to locate and classify named entities (e.g., organizations, locations,...) within a document into predefined categories. Correctly identifying these phrases…

计算与语言 · 计算机科学 2021-12-16 Tran Thi Hong Hanh , Antoine Doucet , Nicolas Sidere , Jose G. Moreno , Senja Pollak

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

Named Entity Recognition (NER) is a key component in industrial information extraction pipelines, where systems must satisfy strict latency and throughput constraints in addition to strong accuracy. State-of-the-art NER accuracy is often…

计算与语言 · 计算机科学 2026-04-23 Andrea Maracani , Savas Ozkan , Junyi Zhu , Sinan Mutlu , Mete Ozay

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…

计算与语言 · 计算机科学 2024-12-23 Imed Keraghel , Stanislas Morbieu , Mohamed Nadif

In this work, we address the NER problem by splitting it into two logical sub-tasks: (1) Span Detection which simply extracts entity mention spans irrespective of entity type; (2) Span Classification which classifies the spans into their…

计算与语言 · 计算机科学 2023-11-01 Jatin Arora , Youngja Park

In this paper, we propose a new strategy for the task of named entity recognition (NER). We cast the task as a query-based machine reading comprehension task: e.g., the task of extracting entities with PER is formalized as answering the…

计算与语言 · 计算机科学 2019-11-05 Yuxian Meng , Xiaoya Li , Zijun Sun , Jiwei Li

Named Entity Recognition (NER) is a fundamental task in the fields of natural language processing and information extraction. NER has been widely used as a standalone tool or an essential component in a variety of applications such as…

计算与语言 · 计算机科学 2020-11-25 Vladislav Mikhailov , Tatiana Shavrina

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…

计算与语言 · 计算机科学 2022-12-13 Jiali Zeng , Yufan Jiang , Yongjing Yin , Xu Wang , Binghuai Lin , Yunbo Cao

Cross-domain named entity recognition (NER) models are able to cope with the scarcity issue of NER samples in target domains. However, most of the existing NER benchmarks lack domain-specialized entity types or do not focus on a certain…

计算与语言 · 计算机科学 2020-12-15 Zihan Liu , Yan Xu , Tiezheng Yu , Wenliang Dai , Ziwei Ji , Samuel Cahyawijaya , Andrea Madotto , Pascale Fung

Recent advances in named entity recognition (NER) have pushed the boundary of the task to incorporate visual signals, leading to many variants, including multi-modal NER (MNER) or grounded MNER (GMNER). A key challenge to these tasks is…

计算与语言 · 计算机科学 2024-04-03 Hyunjong Ok , Taeho Kil , Sukmin Seo , Jaeho Lee

Named Entity Recognition (NER) or the extraction of concepts from clinical text is the task of identifying entities in text and slotting them into categories such as problems, treatments, tests, clinical departments, occurrences (such as…

计算与语言 · 计算机科学 2022-08-31 Namrata Nath , Sang-Heon Lee , Ivan Lee

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.…

计算与语言 · 计算机科学 2023-10-24 Uri Katz , Matan Vetzler , Amir DN Cohen , Yoav Goldberg