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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

With the proliferation of models for natural language processing tasks, it is even harder to understand the differences between models and their relative merits. Simply looking at differences between holistic metrics such as accuracy, BLEU,…

计算与语言 · 计算机科学 2020-12-10 Jinlan Fu , Pengfei Liu , Graham Neubig

Named entity recognition (NER) models often struggle with noisy inputs, such as those with spelling mistakes or errors generated by Optical Character Recognition processes, and learning a robust NER model is challenging. Existing robust NER…

计算与语言 · 计算机科学 2024-07-29 Chaoyi Ai , Yong Jiang , Shen Huang , Pengjun Xie , Kewei Tu

While named entity recognition (NER) is a key task in natural language processing, most approaches only target flat entities, ignoring nested structures which are common in many scenarios. Most existing nested NER methods traverse all…

计算与语言 · 计算机科学 2021-07-21 Huiqiang Jiang , Guoxin Wang , Weile Chen , Chengxi Zhang , Börje F. Karlsson

In this paper, we proposed a deep learning-based end-to-end method on the domain specified automatic term extraction (ATE), it considers possible term spans within a fixed length in the sentence and predicts them whether they can be…

计算与语言 · 计算机科学 2019-09-10 Yuze Gao , Yu Yuan

Sparse annotation in remote sensing object detection poses significant challenges due to dense object distributions and category imbalances. Although existing Dense Pseudo-Label methods have demonstrated substantial potential in…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Wei Liao , Chunyan Xu , Chenxu Wang , Zhen Cui

Span-based joint extraction simultaneously conducts named entity recognition (NER) and relation extraction (RE) in text span form. Recent studies have shown that token labels can convey crucial task-specific information and enrich token…

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

The MultiCoNER \RNum{2} shared task aims to tackle multilingual named entity recognition (NER) in fine-grained and noisy scenarios, and it inherits the semantic ambiguity and low-context setting of the MultiCoNER \RNum{1} task. To cope with…

计算与语言 · 计算机科学 2023-05-18 Zeqi Tan , Shen Huang , Zixia Jia , Jiong Cai , Yinghui Li , Weiming Lu , Yueting Zhuang , Kewei Tu , Pengjun Xie , Fei Huang , Yong Jiang

The information bottleneck (IB) principle has been proven effective in various NLP applications. The existing work, however, only used either generative or information compression models to improve the performance of the target task. In…

计算与语言 · 计算机科学 2023-02-13 Nhung T. H. Nguyen , Makoto Miwa , Sophia Ananiadou

Existing approaches for named entity recognition suffer from data sparsity problems when conducted on short and informal texts, especially user-generated social media content. Semantic augmentation is a potential way to alleviate this…

计算与语言 · 计算机科学 2020-10-30 Yuyang Nie , Yuanhe Tian , Xiang Wan , Yan Song , Bo Dai

We present a weakly-supervised data augmentation approach to improve Named Entity Recognition (NER) in a challenging domain: extracting biomedical entities (e.g., proteins) from the scientific literature. First, we train a neural NER (NNER)…

机器学习 · 计算机科学 2019-06-04 Joel Mathew , Shobeir Fakhraei , José Luis Ambite

Distantly supervised relation extraction intrinsically suffers from noisy labels due to the strong assumption of distant supervision. Most prior works adopt a selective attention mechanism over sentences in a bag to denoise from wrongly…

计算与语言 · 计算机科学 2019-11-28 Yang Li , Guodong Long , Tao Shen , Tianyi Zhou , Lina Yao , Huan Huo , Jing Jiang

It is an effective way that improves the performance of the existing Automatic Speech Recognition (ASR) systems by retraining with more and more new training data in the target domain. Recently, Deep Neural Network (DNN) has become a…

声音 · 计算机科学 2019-04-18 Jiabin Xue , Jiqing Han , Tieran Zheng , Jiaxing Guo , Boyong Wu

Supervised hashing methods are widely-used for nearest neighbor search in computer vision applications. Most state-of-the-art supervised hashing approaches employ batch-learners. Unfortunately, batch-learning strategies can be inefficient…

计算机视觉与模式识别 · 计算机科学 2015-11-11 Fatih Cakir , Sarah Adel Bargal , Stan Sclaroff

In biomedical fields, one named entity may consist of a series of non-adjacent tokens and overlap with other entities. Previous methods recognize discontinuous entities by connecting entity fragments or internal tokens, which face…

计算与语言 · 计算机科学 2025-10-14 Yawen Yang , Fukun Ma , Shiao Meng , Aiwei Liu , Lijie Wen

Although Large Language Models (LLMs) exhibit remarkable adaptability across domains, these models often fall short in structured knowledge extraction tasks such as named entity recognition (NER). This paper explores an innovative,…

计算与语言 · 计算机科学 2024-06-11 Yuzhao Heng , Chunyuan Deng , Yitong Li , Yue Yu , Yinghao Li , Rongzhi Zhang , Chao Zhang

Despite its popularity in sentence-level relation extraction, distantly supervised data is rarely utilized by existing work in document-level relation extraction due to its noisy nature and low information density. Among its current…

计算与语言 · 计算机科学 2024-07-02 Xiangyu Lin , Weijia Jia , Zhiguo Gong

Named Entity Recognition (NER) involves the identification and classification of named entities in unstructured text into predefined classes. NER in languages with limited resources, like French, is still an open problem due to the lack of…

Inspired by recent advances in retrieval augmented methods in NLP~\citep{khandelwal2019generalization,khandelwal2020nearest,meng2021gnn}, in this paper, we introduce a $k$ nearest neighbor NER ($k$NN-NER) framework, which augments the…

计算与语言 · 计算机科学 2022-04-01 Shuhe Wang , Xiaoya Li , Yuxian Meng , Tianwei Zhang , Rongbin Ouyang , Jiwei Li , Guoyin Wang

We introduce a hybrid human-automated system that provides scalable entity-risk relation extractions across large data sets. Given an expert-defined keyword taxonomy, entities, and data sources, the system returns text extractions based on…

计算与语言 · 计算机科学 2019-09-24 Berk Ekmekci , Eleanor Hagerman , Blake Howald