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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

Knowledge graphs (KGs), containing many entity-relation-entity triples, provide rich information for downstream applications. Although extracting triples from unstructured texts has been widely explored, most of them require a large number…

计算与语言 · 计算机科学 2023-06-26 Chengmei Yang , Shuai Jiang , Bowei He , Chen Ma , Lianghua He

Scene graphs provide valuable information to many downstream tasks. Many scene graph generation (SGG) models solely use the limited annotated relation triples for training, leading to their underperformance on low-shot (few and zero)…

计算机视觉与模式识别 · 计算机科学 2021-08-20 Tao He , Lianli Gao , Jingkuan Song , Jianfei Cai , Yuan-Fang Li

The current leading paradigm for temporal information extraction from text consists of three phases: (1) recognition of events and temporal expressions, (2) recognition of temporal relations among them, and (3) time-line construction from…

计算与语言 · 计算机科学 2023-12-01 Artuur Leeuwenberg , Marie-Francine Moens

Temporal knowledge graph, serving as an effective way to store and model dynamic relations, shows promising prospects in event forecasting. However, most temporal knowledge graph reasoning methods are highly dependent on the recurrence or…

人工智能 · 计算机科学 2022-12-05 Yi Xu , Junjie Ou , Hui Xu , Luoyi Fu

Relation Extraction (RE) is a vital step to complete Knowledge Graph (KG) by extracting entity relations from texts.However, it usually suffers from the long-tail issue. The training data mainly concentrates on a few types of relations,…

计算与语言 · 计算机科学 2020-11-30 Yixin Cao , Jun Kuang , Ming Gao , Aoying Zhou , Yonggang Wen , Tat-Seng Chua

Existing models to extract temporal relations between events lack a principled method to incorporate external knowledge. In this study, we introduce Bayesian-Trans, a Bayesian learning-based method that models the temporal relation…

计算与语言 · 计算机科学 2023-02-13 Xingwei Tan , Gabriele Pergola , Yulan He

Relation extraction (RE) aims at extracting the relation between two entities from the text corpora. It is a crucial task for Knowledge Graph (KG) construction. Most existing methods predict the relation between an entity pair by learning…

计算与语言 · 计算机科学 2020-11-30 Jun Kuang , Yixin Cao , Jianbing Zheng , Xiangnan He , Ming Gao , Aoying Zhou

Zero-shot reasoning on text-rich networks (TRNs) remains a challenging frontier, as models must integrate textual semantics with relational structure without task-specific supervision. While graph neural networks rely on fixed label spaces…

计算与语言 · 计算机科学 2026-04-22 Yilun Liu , Ruihong Qiu , Zi Huang

Extracting optical flow from videos remains a core computer vision problem. Motivated by the recent success of large general-purpose models, we ask whether frozen self-supervised video models trained only to predict future frames can be…

Document-level relation extraction is a complex human process that requires logical inference to extract relationships between named entities in text. Existing approaches use graph-based neural models with words as nodes and edges as…

计算与语言 · 计算机科学 2019-09-04 Fenia Christopoulou , Makoto Miwa , Sophia Ananiadou

Event relation detection is a fundamental NLP task, leveraged in many downstream applications, whose modeling requires datasets annotated with event relations of various types. However, systematic and complete annotation of these relations…

计算与语言 · 计算机科学 2024-12-18 Alon Eirew , Eviatar Nachshoni , Aviv Slobodkin , Ido Dagan

While relation extraction is an essential task in knowledge acquisition and representation, and new-generated relations are common in the real world, less effort is made to predict unseen relations that cannot be observed at the training…

计算与语言 · 计算机科学 2021-04-13 Chih-Yao Chen , Cheng-Te Li

This technical report studies the problem of ranking from pairwise comparisons in the classical Bradley-Terry-Luce (BTL) model, with a focus on score estimation. For general graphs, we show that, with sufficiently many samples, maximum…

机器学习 · 统计学 2023-04-17 Yanxi Chen

This paper introduces a new approach for Multivariate Time Series forecasting that jointly infers and leverages relations among time series. Its modularity allows it to be integrated with current univariate methods. Our approach allows to…

机器学习 · 计算机科学 2022-03-08 Victor Garcia Satorras , Syama Sundar Rangapuram , Tim Januschowski

A timeline provides a total ordering of events and times, and is useful for a number of natural language understanding tasks. However, qualitative temporal graphs that can be derived directly from text -- such as TimeML annotations --…

计算与语言 · 计算机科学 2024-06-11 Mustafa Ocal , Ning Xie , Mark Finlayson

Zero-Shot Relation Extraction (ZRE) is the task of Relation Extraction where the training and test sets have no shared relation types. This very challenging domain is a good test of a model's ability to generalize. Previous approaches to…

计算与语言 · 计算机科学 2023-02-10 Saeed Najafi , Alona Fyshe

We propose a novel framework for generating causal graphs from narrative texts, bridging high-level causality and detailed event-specific relationships. Our method first extracts concise, agent-centered vertices using large language model…

计算与语言 · 计算机科学 2025-04-11 Zehan Li , Ruhua Pan , Xinyu Pi

Relation Extraction (RE) is to predict the relation type of two entities that are mentioned in a piece of text, e.g., a sentence or a dialogue. When the given text is long, it is challenging to identify indicative words for the relation…

计算与语言 · 计算机科学 2023-04-26 Fuzhao Xue , Aixin Sun , Hao Zhang , Eng Siong Chng

To retrieve more relevant, appropriate and useful documents given a query, finding clues about that query through the text is crucial. Recent deep learning models regard the task as a term-level matching problem, which seeks exact or…

信息检索 · 计算机科学 2021-02-01 Yufeng Zhang , Jinghao Zhang , Zeyu Cui , Shu Wu , Liang Wang