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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

Named Entity Recognition (NER) is a fundamental problem in natural language processing (NLP). However, the task of extracting longer entity spans (e.g., awards) from extended texts (e.g., homepages) is barely explored. Current NER methods…

计算与语言 · 计算机科学 2025-02-12 Yelin Chen , Fanjin Zhang , Jie Tang

Current neural re-rankers often struggle with complex information needs and long, content-rich documents. The fundamental issue is not computational--it is intelligent content selection: identifying what matters in lengthy, multi-faceted…

信息检索 · 计算机科学 2025-10-14 Shubham Chatterjee

Named entity recognition (NER) is one of the tasks in natural language processing that can greatly benefit from the use of external knowledge sources. We propose a named entity recognition framework composed of knowledge-based feature…

计算与语言 · 计算机科学 2019-06-07 Sławomir Dadas

Conventional entity typing approaches are based on independent classification paradigms, which make them difficult to recognize inter-dependent, long-tailed and fine-grained entity types. In this paper, we argue that the implicitly entailed…

计算与语言 · 计算机科学 2021-09-14 Qing Liu , Hongyu Lin , Xinyan Xiao , Xianpei Han , Le Sun , Hua Wu

Most previous approaches to Chinese word segmentation can be roughly classified into character-based and word-based methods. The former regards this task as a sequence-labeling problem, while the latter directly segments character sequence…

计算与语言 · 计算机科学 2017-12-29 Zhiqing Sun , Gehui Shen , Zhihong Deng

We present a bi-encoder framework for named entity recognition (NER), which applies contrastive learning to map candidate text spans and entity types into the same vector representation space. Prior work predominantly approaches NER as…

计算与语言 · 计算机科学 2023-02-24 Sheng Zhang , Hao Cheng , Jianfeng Gao , Hoifung Poon

The "CNN-RNN" design pattern is increasingly widely applied in a variety of image annotation tasks including multi-label classification and captioning. Existing models use the weakly semantic CNN hidden layer or its transform as the image…

计算机视觉与模式识别 · 计算机科学 2016-11-18 Feng Liu , Tao Xiang , Timothy M. Hospedales , Wankou Yang , Changyin Sun

Implicit neural networks, a.k.a., deep equilibrium networks, are a class of implicit-depth learning models where function evaluation is performed by solving a fixed point equation. They generalize classic feedforward models and are…

机器学习 · 计算机科学 2022-01-27 Saber Jafarpour , Alexander Davydov , Anton V. Proskurnikov , Francesco Bullo

Dynamical systems in biology are complex, and one often does not have comprehensive knowledge about the interactions involved. Chemical reaction network (CRN) inference aims to identify, from observing species concentrations over time, the…

统计方法学 · 统计学 2026-04-15 Yong See Foo , Adriana Zanca , Jennifer A. Flegg , Ivo Siekmann

Named entity recognition(NER) is one of the tasks of natural language processing(NLP). In view of the problem that the traditional character representation ability is weak and the neural network method is unable to capture the important…

计算与语言 · 计算机科学 2020-02-04 Jianfeng Deng , Lianglun Cheng , Zhuowei Wang

Understanding neural networks is challenging due to their high-dimensional, interacting components. Inspired by human cognition, which processes complex sensory data by chunking it into recurring entities, we propose leveraging this…

机器学习 · 计算机科学 2025-02-05 Shuchen Wu , Stephan Alaniz , Eric Schulz , Zeynep Akata

Named Entity Recognition (NER) is a core natural language processing task in which pre-trained language models have shown remarkable performance. However, standard benchmarks like CoNLL 2003 do not address many of the challenges that…

计算与语言 · 计算机科学 2023-05-01 Iker García-Ferrero , Jon Ander Campos , Oscar Sainz , Ander Salaberria , Dan Roth

Recurrent neural networks (RNN) are the backbone of many text and speech applications. These architectures are typically made up of several computationally complex components such as; non-linear activation functions, normalization,…

机器学习 · 计算机科学 2022-12-23 Vahid Partovi Nia , Eyyüb Sari , Vanessa Courville , Masoud Asgharian

Named Entity Recognition (NER) serves as a fundamental task in natural language understanding, bearing direct implications for web content analysis, search engines, and information retrieval systems. Fine-tuned NER models exhibit…

计算与语言 · 计算机科学 2024-12-24 Zhen Zhang , Yuhua Zhao , Hang Gao , Mengting Hu

Named Entity Recognition (NER) frequently suffers from the problem of insufficient labeled data, particularly in fine-grained NER scenarios. Although $K$-shot learning techniques can be applied, their performance tends to saturate when the…

计算与语言 · 计算机科学 2023-11-14 Su Ah Lee , Seokjin Oh , Woohwan Jung

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

Knowledge tracing---where a machine models the knowledge of a student as they interact with coursework---is a well established problem in computer supported education. Though effectively modeling student knowledge would have high…

The most common Named Entity Recognizers are usually sequence taggers trained on fully annotated corpora, i.e. the class of all words for all entities is known. Partially annotated corpora, i.e. some but not all entities of some types are…

计算与语言 · 计算机科学 2022-04-21 Michael Strobl , Amine Trabelsi , Osmar Zaiane

Named Entity Recognition (NER) is a key component in NLP systems for question answering, information retrieval, relation extraction, etc. NER systems have been studied and developed widely for decades, but accurate systems using deep neural…

计算与语言 · 计算机科学 2019-12-12 Vikas Yadav , Steven Bethard
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