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Dictionary-based entity extraction involves finding mentions of dictionary entities in text. Text mentions are often noisy, containing spurious or missing words. Efficient algorithms for detecting approximate entity mentions follow one of…

数据库 · 计算机科学 2015-12-17 Ndapandula Nakashole

We show that relation extraction can be reduced to answering simple reading comprehension questions, by associating one or more natural-language questions with each relation slot. This reduction has several advantages: we can (1) learn…

计算与语言 · 计算机科学 2017-06-14 Omer Levy , Minjoon Seo , Eunsol Choi , Luke Zettlemoyer

Keyphrase extraction is the task of extracting a small set of phrases that best describe a document. Most existing benchmark datasets for the task typically have limited numbers of annotated documents, making it challenging to train…

计算与语言 · 计算机科学 2020-10-26 Tuan Manh Lai , Trung Bui , Doo Soon Kim , Quan Hung Tran

Entity Linking has two main open areas of research: 1) generate candidate entities without using alias tables and 2) generate more contextual representations for both mentions and entities. Recently, a solution has been proposed for the…

计算与语言 · 计算机科学 2020-04-08 Oshin Agarwal , Daniel M. Bikel

Keyphrases are capable of providing semantic metadata characterizing documents and producing an overview of the content of a document. Since keyphrase extraction is able to facilitate the management, categorization, and retrieval of…

计算与语言 · 计算机科学 2020-02-14 Funan Mu , Zhenting Yu , LiFeng Wang , Yequan Wang , Qingyu Yin , Yibo Sun , Liqun Liu , Teng Ma , Jing Tang , Xing Zhou

Relation extraction is an important task in knowledge acquisition and text understanding. Existing works mainly focus on improving relation extraction by extracting effective features or designing reasonable model structures. However, few…

计算与语言 · 计算机科学 2021-04-08 Jiayang Cheng , Haiyun Jiang , Deqing Yang , Yanghua Xiao

The extraction of individual reference strings from the reference section of scientific publications is an important step in the citation extraction pipeline. Current approaches divide this task into two steps by first detecting the…

信息检索 · 计算机科学 2017-05-24 Martin Körner

Synthesizing SQL queries from natural language is a long-standing open problem and has been attracting considerable interest recently. Toward solving the problem, the de facto approach is to employ a sequence-to-sequence-style model. Such…

计算与语言 · 计算机科学 2017-11-15 Xiaojun Xu , Chang Liu , Dawn Song

Text-to-SQL generation aims to translate natural language questions into SQL statements. In Text-to-SQL based on large language models, schema linking is a widely adopted strategy to streamline the input for LLMs by selecting only relevant…

计算与语言 · 计算机科学 2024-11-27 Zhenbiao Cao , Yuanlei Zheng , Zhihao Fan , Xiaojin Zhang , Wei Chen , Xiang Bai

Relation triple extraction, which outputs a set of triples from long sentences, plays a vital role in knowledge acquisition. Large language models can accurately extract triples from simple sentences through few-shot learning or fine-tuning…

计算与语言 · 计算机科学 2024-04-16 Zepeng Ding , Wenhao Huang , Jiaqing Liang , Deqing Yang , Yanghua Xiao

We propose a methodology for extracting concepts for a target domain from large-scale linked open data (LOD) to support the construction of domain ontologies providing field-specific knowledge and definitions. The proposed method defines…

信息检索 · 计算机科学 2022-01-31 Satoshi Kume , Kouji Kozaki

Relation extraction (RE) is an important information extraction task which provides essential information to many NLP applications such as knowledge base population and question answering. In this paper, we present a novel generative model…

计算与语言 · 计算机科学 2022-03-01 Jian Ni , Gaetano Rossiello , Alfio Gliozzo , Radu Florian

Most work in relation extraction forms a prediction by looking at a short span of text within a single sentence containing a single entity pair mention. However, many relation types, particularly in biomedical text, are expressed across…

计算与语言 · 计算机科学 2017-11-17 Patrick Verga , Emma Strubell , Ofer Shai , Andrew McCallum

Entities, as the essential elements in relation extraction tasks, exhibit certain structure. In this work, we formulate such structure as distinctive dependencies between mention pairs. We then propose SSAN, which incorporates these…

计算与语言 · 计算机科学 2021-02-23 Benfeng Xu , Quan Wang , Yajuan Lyu , Yong Zhu , Zhendong Mao

Relation extraction has been widely studied to extract new relational facts from open corpus. Previous relation extraction methods are faced with the problem of wrong labels and noisy data, which substantially decrease the performance of…

信息检索 · 计算机科学 2018-05-01 Dongdong Yang , Senzhang Wang , Zhoujun Li

Zero-shot relation extraction aims to identify relations between entity mentions using textual descriptions of novel types (i.e., previously unseen) instead of labeled training examples. Previous works often rely on unrealistic assumptions:…

计算与语言 · 计算机科学 2026-03-05 Hugo Thomas , Caio Corro , Guillaume Gravier , Pascale Sébillot

We present a joint model for entity-level relation extraction from documents. In contrast to other approaches - which focus on local intra-sentence mention pairs and thus require annotations on mention level - our model operates on entity…

计算与语言 · 计算机科学 2021-12-06 Markus Eberts , Adrian Ulges

Presentation slides describing the content of scientific and technical papers are an efficient and effective way to present that work. However, manually generating presentation slides is labor intensive. We propose a method to automatically…

计算与语言 · 计算机科学 2021-06-08 Athar Sefid , Jian Wu , Prasenjit Mitra , Lee Giles

In this paper we address a task of relation mention extraction from noisy data: extracting representative phrases for a particular relation from noisy sentences that are collected via distant supervision. Despite its significance and value…

计算与语言 · 计算机科学 2018-11-06 Jun Feng , Minlie Huang , Yijie Zhang , Yang Yang , Xiaoyan Zhu

Descriptive titles provide crucial context for interpreting tables that are extracted from web pages and are a key component of table-based web applications. Prior approaches have attempted to produce titles by selecting existing text…

计算与语言 · 计算机科学 2019-06-06 Braden Hancock , Hongrae Lee , Cong Yu