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Named entity recognition (NER) is a widely studied task in natural language processing. Recently, a growing number of studies have focused on the nested NER. The span-based methods, considering the entity recognition as a span…

计算与语言 · 计算机科学 2021-06-22 Zeqi Tan , Yongliang Shen , Shuai Zhang , Weiming Lu , Yueting Zhuang

Identifying the target types of entity-bearing queries can help improve retrieval performance as well as the overall search experience. In this work, we address the problem of automatically detecting the target types of a query with respect…

信息检索 · 计算机科学 2017-07-28 Darío Garigliotti , Faegheh Hasibi , Krisztian Balog

Current systems of fine-grained entity typing use distant supervision in conjunction with existing knowledge bases to assign categories (type labels) to entity mentions. However, the type labels so obtained from knowledge bases are often…

计算与语言 · 计算机科学 2016-02-18 Xiang Ren , Wenqi He , Meng Qu , Clare R. Voss , Heng Ji , Jiawei Han

Artificial Intelligence (AI) has huge impact on our daily lives with applications such as voice assistants, facial recognition, chatbots, autonomously driving cars, etc. Natural Language Processing (NLP) is a cross-discipline of AI and…

计算与语言 · 计算机科学 2023-04-18 Klim Zaporojets

Named entity recognition (NER) is the task to identify mentions of rigid designators from text belonging to predefined semantic types such as person, location, organization etc. NER always serves as the foundation for many natural language…

计算与语言 · 计算机科学 2023-04-26 Jing Li , Aixin Sun , Jianglei Han , Chenliang Li

Semantic typing aims at classifying tokens or spans of interest in a textual context into semantic categories such as relations, entity types, and event types. The inferred labels of semantic categories meaningfully interpret how machines…

计算与语言 · 计算机科学 2022-05-05 James Y. Huang , Bangzheng Li , Jiashu Xu , Muhao Chen

Document-level relation extraction is a challenging task which requires reasoning over multiple sentences in order to predict relations in a document. In this paper, we pro-pose a joint training frameworkE2GRE(Entity and Evidence Guided…

计算与语言 · 计算机科学 2020-08-28 Kevin Huang , Guangtao Wang , Tengyu Ma , Jing Huang

Discovering latent topics from text corpora has been studied for decades. Many existing topic models adopt a fully unsupervised setting, and their discovered topics may not cater to users' particular interests due to their inability of…

计算与语言 · 计算机科学 2025-02-19 Yu Zhang , Yu Meng , Xuan Wang , Sheng Wang , Jiawei Han

Ultra-fine entity typing (UFET) aims to predict a wide range of type phrases that correctly describe the categories of a given entity mention in a sentence. Most recent works infer each entity type independently, ignoring the correlations…

计算与语言 · 计算机科学 2022-12-06 Chengyue Jiang , Yong Jiang , Weiqi Wu , Pengjun Xie , Kewei Tu

Cross-task knowledge transfer via multi-task learning has recently made remarkable progress in general NLP tasks. However, entity tracking on the procedural text has not benefited from such knowledge transfer because of its distinct…

计算与语言 · 计算机科学 2023-02-14 Janvijay Singh , Fan Bai , Zhen Wang

Entity Set Expansion (ESE) is a critical task aiming at expanding entities of the target semantic class described by seed entities. Most existing ESE methods are retrieval-based frameworks that need to extract contextual features of…

计算与语言 · 计算机科学 2024-08-06 Shulin Huang , Shirong Ma , Yangning Li , Yinghui Li , Hai-Tao Zheng

Joint entity and relation extraction (JERE) is one of the most important tasks in information extraction. However, most existing works focus on sentence-level coarse-grained JERE, which have limitations in real-world scenarios. In this…

计算与语言 · 计算机科学 2023-03-22 Hongbo Wang , Weimin Xiong , Yifan Song , Dawei Zhu , Yu Xia , Sujian Li

Deep learning usually achieves the best results with complete supervision. In the case of semantic segmentation, this means that large amounts of pixelwise annotations are required to learn accurate models. In this paper, we show that we…

计算机视觉与模式识别 · 计算机科学 2020-05-07 Yi Zhu , Zhongyue Zhang , Chongruo Wu , Zhi Zhang , Tong He , Hang Zhang , R. Manmatha , Mu Li , Alexander Smola

Logical rules, both transferable and explainable, are widely used as weakly supervised signals for many downstream tasks such as named entity tagging. To reduce the human effort of writing rules, previous researchers adopt an iterative…

计算与语言 · 计算机科学 2022-10-07 Tao Chen , Luxin Liu , Xuepeng Jia , Baoliang Cui , Haihong Tang , Siliang Tang

Embedding models typically associate each word with a single real-valued vector, representing its different properties. Evaluation methods, therefore, need to analyze the accuracy and completeness of these properties in embeddings. This…

计算与语言 · 计算机科学 2018-07-20 Yadollah Yaghoobzadeh , Katharina Kann , Hinrich Schütze

In weakly-supervised text classification, only label names act as sources of supervision. Predominant approaches to weakly-supervised text classification utilize a two-phase framework, where test samples are first assigned pseudo-labels and…

计算与语言 · 计算机科学 2022-10-14 Seongmin Park , Jihwa Lee

Semi-Supervised Semantic Segmentation aims at training the segmentation model with limited labeled data and a large amount of unlabeled data. To effectively leverage the unlabeled data, pseudo labeling, along with the teacher-student…

计算机视觉与模式识别 · 计算机科学 2023-01-19 Ying Jin , Jiaqi Wang , Dahua Lin

Enterprises grapple with the significant challenge of managing proprietary unstructured data, hindering efficient information retrieval. This has led to the emergence of AI-driven information retrieval solutions, designed to adeptly extract…

Data selection seeks to identify a compact yet informative subset from large-scale training corpora, balancing sample quality against collection diversity. We formulate this problem as a Weighted Independent Set (WIS) on a similarity graph,…

机器学习 · 计算机科学 2026-05-21 Yuan Zhang , Lifeng Guo , Junwen Pan , Wenzhao Zheng , Wen Zhou , Kuan Cheng , Kurt Keutzer , Shanghang Zhang

Recent works have demonstrated the effectiveness of self-alignment in which a large language model is aligned to follow general instructions using instructional data generated from the model itself starting from a handful of human-written…

计算与语言 · 计算机科学 2024-06-07 Junmo Kang , Hongyin Luo , Yada Zhu , Jacob Hansen , James Glass , David Cox , Alan Ritter , Rogerio Feris , Leonid Karlinsky