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We cast nested named entity recognition (NNER) as a sequence labeling task by leveraging prior work that linearizes constituency structures, effectively reducing the complexity of this structured prediction problem to straightforward token…

计算与语言 · 计算机科学 2025-09-30 Alberto Muñoz-Ortiz , David Vilares , Caio Corro , Carlos Gómez-Rodríguez

Accurate recognition of biomedical named entities is critical for medical information extraction and knowledge discovery. However, existing methods often struggle with nested entities, entity boundary ambiguity, and cross-lingual…

计算与语言 · 计算机科学 2025-10-13 Tengxiao Lv , Ling Luo , Juntao Li , Yanhua Wang , Yuchen Pan , Chao Liu , Yanan Wang , Yan Jiang , Huiyi Lv , Yuanyuan Sun , Jian Wang , Hongfei Lin

We introduce NeuCo-Bench, a novel benchmark framework for evaluating (lossy) neural compression and representation learning in the context of Earth Observation (EO). Our approach builds on fixed-size embeddings that act as compact,…

Recently, neural networks have shown promising results for named entity recognition (NER), which needs a number of labeled data to for model training. When meeting a new domain (target domain) for NER, there is no or a few labeled data,…

计算与语言 · 计算机科学 2018-10-17 Lin Li , Yueqing Sun

Research on overlapped and discontinuous named entity recognition (NER) has received increasing attention. The majority of previous work focuses on either overlapped or discontinuous entities. In this paper, we propose a novel span-based…

计算与语言 · 计算机科学 2021-06-29 Fei Li , Zhichao Lin , Meishan Zhang , Donghong Ji

Entity resolution (ER) is the task of identifying different representations of the same real-world entities across databases. It is a key step for knowledge base creation and text mining. Recent adaptation of deep learning methods for ER…

数据库 · 计算机科学 2019-06-20 Jungo Kasai , Kun Qian , Sairam Gurajada , Yunyao Li , Lucian Popa

Many previous models of named entity recognition (NER) suffer from the problem of Out-of-Entity (OOE), i.e., the tokens in the entity mentions of the test samples have not appeared in the training samples, which hinders the achievement of…

计算与语言 · 计算机科学 2025-01-14 Guochao Jiang , Ziqin Luo , Chengwei Hu , Zepeng Ding , Deqing Yang

Entity alignment is crucial for merging knowledge across knowledge graphs, as it matches entities with identical semantics. The standard method matches these entities based on their embedding similarities using semi-supervised learning.…

计算与语言 · 计算机科学 2024-10-29 Wei Ai , Yinghui Gao , Jianbin Li , Jiayi Du , Tao Meng , Yuntao Shou , Keqin Li

Open Named Entity Recognition (NER), which involves identifying arbitrary types of entities from arbitrary domains, remains challenging for Large Language Models (LLMs). Recent studies suggest that fine-tuning LLMs on extensive NER data can…

We propose a transfer learning-based solution for the problem of multiple class novelty detection. In particular, we propose an end-to-end deep-learning based approach in which we investigate how the knowledge contained in an external,…

计算机视觉与模式识别 · 计算机科学 2019-03-07 Pramuditha Perera , Vishal M. Patel

Brain tissue segmentation from multimodal MRI is a key building block of many neuroimaging analysis pipelines. Established tissue segmentation approaches have, however, not been developed to cope with large anatomical changes resulting from…

图像与视频处理 · 电气工程与系统科学 2020-11-05 Reuben Dorent , Thomas Booth , Wenqi Li , Carole H. Sudre , Sina Kafiabadi , Jorge Cardoso , Sebastien Ourselin , Tom Vercauteren

Disease name recognition and normalization, which is generally called biomedical entity linking, is a fundamental process in biomedical text mining. Recently, neural joint learning of both tasks has been proposed to utilize the mutual…

计算与语言 · 计算机科学 2021-04-22 Shogo Ujiie , Hayate Iso , Shuntaro Yada , Shoko Wakamiya , Eiji Aramaki

The task of named entity recognition (NER) is normally divided into nested NER and flat NER depending on whether named entities are nested or not. Models are usually separately developed for the two tasks, since sequence labeling models,…

计算与语言 · 计算机科学 2022-11-23 Xiaoya Li , Jingrong Feng , Yuxian Meng , Qinghong Han , Fei Wu , Jiwei Li

In biomedical literature, it is common for entity boundaries to not align with word boundaries. Therefore, effective identification of entity spans requires approaches capable of considering tokens that are smaller than words. We introduce…

计算与语言 · 计算机科学 2018-09-25 Emily Sheng , Prem Natarajan

While Named Entity Recognition (NER) is a widely studied task, making inferences of entities with only a few labeled data has been challenging, especially for entities with nested structures. Unlike flat entities, entities and their nested…

计算与语言 · 计算机科学 2022-12-05 Hong Ming , Jiaoyun Yang , Lili Jiang , Yan Pan , Ning An

Named Entity Recognition (NER) and Relation Extraction (RE) are essential tools in distilling knowledge from biomedical literature. This paper presents our findings from participating in BioNLP Shared Tasks 2019. We addressed Named Entity…

计算与语言 · 计算机科学 2019-10-09 Usama Yaseen , Pankaj Gupta , Hinrich Schütze

This work investigates multiple approaches to Named Entity Recognition (NER) for text in Electronic Health Record (EHR) data. In particular, we look into the application of (i) rule-based, (ii) deep learning and (iii) transfer learning…

Novel class discovery (NCD) aims at learning a model that transfers the common knowledge from a class-disjoint labelled dataset to another unlabelled dataset and discovers new classes (clusters) within it. Many methods, as well as elaborate…

计算机视觉与模式识别 · 计算机科学 2023-03-24 Wenbin Li , Zhichen Fan , Jing Huo , Yang Gao

Biomedical entity linking aims to map biomedical mentions, such as diseases and drugs, to standard entities in a given knowledge base. The specific challenge in this context is that the same biomedical entity can have a wide range of names,…

计算与语言 · 计算机科学 2021-05-25 Lihu Chen , Gaël Varoquaux , Fabian M. Suchanek

Named entity recognition (NER) and relation extraction (RE) are two important tasks in information extraction and retrieval (IE \& IR). Recent work has demonstrated that it is beneficial to learn these tasks jointly, which avoids the…

计算与语言 · 计算机科学 2020-01-01 John Giorgi , Xindi Wang , Nicola Sahar , Won Young Shin , Gary D. Bader , Bo Wang