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Information Extraction (IE) refers to automatically extracting structured relation tuples from unstructured texts. Common IE solutions, including Relation Extraction (RE) and open IE systems, can hardly handle cross-sentence tuples, and are…

信息检索 · 计算机科学 2019-01-29 Lin Qiu , Hao Zhou , Yanru Qu , Weinan Zhang , Suoheng Li , Shu Rong , Dongyu Ru , Lihua Qian , Kewei Tu , Yong Yu

Information Extraction (IE) aims to extract structural information from unstructured texts. In practice, long-tailed distributions caused by the selection bias of a dataset, may lead to incorrect correlations, also known as spurious…

计算与语言 · 计算机科学 2021-09-14 Guoshun Nan , Jiaqi Zeng , Rui Qiao , Zhijiang Guo , Wei Lu

Multimodal information extraction (MIE) gains significant attention as the popularity of multimedia content increases. However, current MIE methods often resort to using task-specific model structures, which results in limited…

人工智能 · 计算机科学 2024-01-09 Lin Sun , Kai Zhang , Qingyuan Li , Renze Lou

Cross-domain disentanglement is the problem of learning representations partitioned into domain-invariant and domain-specific representations, which is a key to successful domain transfer or measuring semantic distance between two domains.…

计算机视觉与模式识别 · 计算机科学 2020-12-09 HyeongJoo Hwang , Geon-Hyeong Kim , Seunghoon Hong , Kee-Eung Kim

The multi-format information extraction task in the 2021 Language and Intelligence Challenge is designed to comprehensively evaluate information extraction from different dimensions. It consists of an multiple slots relation extraction…

计算与语言 · 计算机科学 2021-08-17 Yaduo Liu , Longhui Zhang , Shujuan Yin , Xiaofeng Zhao , Feiliang Ren

We target on the document-level relation extraction in an end-to-end setting, where the model needs to jointly perform mention extraction, coreference resolution (COREF) and relation extraction (RE) at once, and gets evaluated in an…

计算与语言 · 计算机科学 2022-05-05 Liyan Xu , Jinho D. Choi

We introduce a multi-task setup of identifying and classifying entities, relations, and coreference clusters in scientific articles. We create SciERC, a dataset that includes annotations for all three tasks and develop a unified framework…

计算与语言 · 计算机科学 2018-08-30 Yi Luan , Luheng He , Mari Ostendorf , Hannaneh Hajishirzi

Information extraction (IE) is a fundamental area in natural language processing where prompting large language models (LLMs), even with in-context examples, cannot defeat small LMs tuned on very small IE datasets. We observe that IE tasks,…

计算与语言 · 计算机科学 2024-04-02 Letian Peng , Zilong Wang , Feng Yao , Zihan Wang , Jingbo Shang

Scientific Information Extraction (ScientificIE) is a critical task that involves the identification of scientific entities and their relationships. The complexity of this task is compounded by the necessity for domain-specific knowledge…

计算与语言 · 计算机科学 2023-12-27 Dong Pham , Xanh Ho , Quang-Thuy Ha , Akiko Aizawa

Knowledge graph embedding aims to learn distributed representations for entities and relations, and is proven to be effective in many applications. Crossover interactions --- bi-directional effects between entities and relations --- help…

人工智能 · 计算机科学 2019-03-13 Wen Zhang , Bibek Paudel , Wei Zhang , Abraham Bernstein , Huajun Chen

Zero-shot cross-lingual information extraction (IE) describes the construction of an IE model for some target language, given existing annotations exclusively in some other language, typically English. While the advance of pretrained…

Recent works on relational triple extraction have shown the superiority of jointly extracting entities and relations over the pipelined extraction manner. However, most existing joint models fail to balance the modeling of entity features…

计算与语言 · 计算机科学 2022-05-04 Zhepei Wei , Yantao Jia , Yuan Tian , Mohammad Javad Hosseini , Sujian Li , Mark Steedman , Yi Chang

Learning template based information extraction from documents is a crucial yet difficult task. Prior template-based IE approaches assume foreknowledge of the domain templates; however, real-world IE do not have pre-defined schemas and it is…

Joint entity and relation extraction is the fundamental task of information extraction, consisting of two subtasks: named entity recognition and relation extraction. However, most existing joint extraction methods suffer from issues of…

计算与语言 · 计算机科学 2024-03-28 Wenjun Kong , Yamei Xia

Information extraction (IE) systems aim to automatically extract structured information, such as named entities, relations between entities, and events, from unstructured texts. While most existing work addresses a particular IE task,…

计算与语言 · 计算机科学 2023-05-22 Chang Gao , Wenxuan Zhang , Wai Lam , Lidong Bing

Information Extraction (IE) aims to extract structural knowledge (e.g., entities, relations, events) from natural language texts, which brings challenges to existing methods due to task-specific schemas and complex text expressions. Code,…

人工智能 · 计算机科学 2023-11-07 Yucan Guo , Zixuan Li , Xiaolong Jin , Yantao Liu , Yutao Zeng , Wenxuan Liu , Xiang Li , Pan Yang , Long Bai , Jiafeng Guo , Xueqi Cheng

Information extraction suffers from its varying targets, heterogeneous structures, and demand-specific schemas. In this paper, we propose a unified text-to-structure generation framework, namely UIE, which can universally model different IE…

计算与语言 · 计算机科学 2022-03-24 Yaojie Lu , Qing Liu , Dai Dai , Xinyan Xiao , Hongyu Lin , Xianpei Han , Le Sun , Hua Wu

Retrieving external knowledge and prompting large language models with relevant information is an effective paradigm to enhance the performance of question-answering tasks. Previous research typically handles paragraphs from external…

计算与语言 · 计算机科学 2024-08-07 Tiezheng Guo , Chen Wang , Yanyi Liu , Jiawei Tang , Pan Li , Sai Xu , Qingwen Yang , Xianlin Gao , Zhi Li , Yingyou Wen

Open Information Extraction (OpenIE) aims to extract relational tuples from open-domain sentences. Traditional rule-based or statistical models have been developed based on syntactic structures of sentences, identified by syntactic parsers.…

计算与语言 · 计算机科学 2022-12-06 Kuicai Dong , Aixin Sun , Jung-Jae Kim , Xiaoli Li

Information extraction (IE) is an important task in Natural Language Processing (NLP), involving the extraction of named entities and their relationships from unstructured text. In this paper, we propose a novel approach to this task by…

计算与语言 · 计算机科学 2024-04-22 Urchade Zaratiana , Nadi Tomeh , Niama El Khbir , Pierre Holat , Thierry Charnois