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In order to assist security analysts in obtaining information pertaining to their network, such as novel vulnerabilities, exploits, or patches, information retrieval methods tailored to the security domain are needed. As labeled text data…

信息检索 · 计算机科学 2015-04-17 Corinne L. Jones , Robert A. Bridges , Kelly Huffer , John Goodall

Continual Few-shot Relation Extraction (CFRE) is a practical problem that requires the model to continuously learn novel relations while avoiding forgetting old ones with few labeled training data. The primary challenges are catastrophic…

计算与语言 · 计算机科学 2024-02-27 Shengkun Ma , Jiale Han , Yi Liang , Bo Cheng

Conventional approaches to relation extraction usually require a fixed set of pre-defined relations. Such requirement is hard to meet in many real applications, especially when new data and relations are emerging incessantly and it is…

计算与语言 · 计算机科学 2019-03-27 Hong Wang , Wenhan Xiong , Mo Yu , Xiaoxiao Guo , Shiyu Chang , William Yang Wang

End-to-end relation extraction aims to identify named entities and extract relations between them. Most recent work models these two subtasks jointly, either by casting them in one structured prediction framework, or performing multi-task…

计算与语言 · 计算机科学 2021-03-24 Zexuan Zhong , Danqi Chen

Predicting unseen relations that cannot be observed during the training phase is a challenging task in relation extraction. Previous works have made progress by matching the semantics between input instances and label descriptions. However,…

计算与语言 · 计算机科学 2024-06-18 Shilong Li , Ge Bai , Zhang Zhang , Ying Liu , Chenji Lu , Daichi Guo , Ruifang Liu , Yong Sun

Despite the importance of relation extraction in building and representing knowledge, less research is focused on generalizing to unseen relations types. We introduce the task setting of Zero-Shot Relation Triplet Extraction (ZeroRTE) to…

计算与语言 · 计算机科学 2022-03-18 Yew Ken Chia , Lidong Bing , Soujanya Poria , Luo Si

Relation classification (RC) plays a pivotal role in both natural language understanding and knowledge graph completion. It is generally formulated as a task to recognize the relationship between two entities of interest appearing in a…

计算与语言 · 计算机科学 2024-09-09 Miao Fan , Yeqi Bai , Mingming Sun , Ping Li

The training of deep-learning-based text classification models relies heavily on a huge amount of annotation data, which is difficult to obtain. When the labeled data is scarce, models tend to struggle to achieve satisfactory performance.…

计算与语言 · 计算机科学 2020-04-07 Dianbo Sui , Yubo Chen , Binjie Mao , Delai Qiu , Kang Liu , Jun Zhao

This paper contributes a joint embedding model for predicting relations between a pair of entities in the scenario of relation inference. It differs from most stand-alone approaches which separately operate on either knowledge bases or free…

计算与语言 · 计算机科学 2015-07-08 Miao Fan , Kai Cao , Yifan He , Ralph Grishman

This paper proposes a novel approach for relation extraction from free text which is trained to jointly use information from the text and from existing knowledge. Our model is based on two scoring functions that operate by learning…

计算与语言 · 计算机科学 2013-08-02 Jason Weston , Antoine Bordes , Oksana Yakhnenko , Nicolas Usunier

Objective: Medical relations are the core components of medical knowledge graphs that are needed for healthcare artificial intelligence. However, the requirement of expert annotation by conventional algorithm development processes creates a…

机器学习 · 计算机科学 2020-09-09 Yucong Lin , Keming Lu , Yulin Chen , Chuan Hong , Sheng Yu

Document-level relation extraction (RE) aims to extract the relations between entities from the input document that usually containing many difficultly-predicted entity pairs whose relations can only be predicted through relational…

计算与语言 · 计算机科学 2022-11-29 Liang Zhang , Jinsong Su , Yidong Chen , Zhongjian Miao , Zijun Min , Qingguo Hu , Xiaodong Shi

The relation classification is to identify semantic relations between two entities in a given text. While existing models perform well for classifying inverse relations with large datasets, their performance is significantly reduced for…

计算与语言 · 计算机科学 2022-04-27 Chunliu Dou , Shaojuan Wu , Xiaowang Zhang , Zhiyong Feng , Kewen Wang

This paper presents an empirical study to build relation extraction systems in low-resource settings. Based upon recent pre-trained language models, we comprehensively investigate three schemes to evaluate the performance in low-resource…

计算与语言 · 计算机科学 2023-09-19 Xin Xu , Xiang Chen , Ningyu Zhang , Xin Xie , Xi Chen , Huajun Chen

This tutorial overviews the state of the art in learning models over relational databases and makes the case for a first-principles approach that exploits recent developments in database research. The input to learning classification and…

数据库 · 计算机科学 2019-11-18 Maximilian Schleich , Dan Olteanu , Mahmoud Abo-Khamis , Hung Q. Ngo , XuanLong Nguyen

Neural relation extraction models have shown promising results in recent years; however, the model performance drops dramatically given only a few training samples. Recent works try leveraging the advance in few-shot learning to solve the…

计算与语言 · 计算机科学 2021-09-10 Manqing Dong , Chunguang Pan , Zhipeng Luo

Recognizing relations between entities is a pivotal task of relational learning. Learning relation representations from distantly-labeled datasets is difficult because of the abundant label noise and complicated expressions in human…

计算与语言 · 计算机科学 2021-03-23 Ning Ding , Xiaobin Wang , Yao Fu , Guangwei Xu , Rui Wang , Pengjun Xie , Ying Shen , Fei Huang , Hai-Tao Zheng , Rui Zhang

Joint Multimodal Entity-Relation Extraction (JMERE) is a challenging task that aims to extract entities and their relations from text-image pairs in social media posts. Existing methods for JMERE require large amounts of labeled data.…

计算与语言 · 计算机科学 2025-03-25 Li Yuan , Yi Cai , Junsheng Huang

The main purpose of relation extraction is to extract the semantic relationships between tagged pairs of entities in a sentence, which plays an important role in the semantic understanding of sentences and the construction of knowledge…

计算与语言 · 计算机科学 2023-03-21 Chenghong Sun , Weidong Ji , Guohui Zhou , Hui Guo , Zengxiang Yin , Yuqi Yue

Real-world knowledge graphs are often characterized by low-frequency relations - a challenge that has prompted an increasing interest in few-shot link prediction methods. These methods perform link prediction for a set of new relations,…

人工智能 · 计算机科学 2021-02-09 Dora Jambor , Komal Teru , Joelle Pineau , William L. Hamilton