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Temporal Knowledge Graph (TKG) representation learning embeds entities and event types into a continuous low-dimensional vector space by integrating the temporal information, which is essential for downstream tasks, e.g., event prediction…

机器学习 · 计算机科学 2023-12-13 Xing Tang , Ling Chen

Knowledge Graphs (KGs) are becoming essential to information systems that require access to structured data. Several approaches have been recently proposed, for obtaining vector representations of KGs suitable for Machine Learning tasks,…

人工智能 · 计算机科学 2018-04-17 Muhammad Rizwan Saeed , Charalampos Chelmis , Viktor K. Prasanna

Developing link prediction models to automatically complete knowledge graphs has recently been the focus of significant research interest. The current methods for the link prediction taskhavetwonaturalproblems:1)the relation distributions…

人工智能 · 计算机科学 2021-04-20 Yao Zhang , Xu Zhang , Jun Wang , Hongru Liang , Wenqiang Lei , Zhe Sun , Adam Jatowt , Zhenglu Yang

Representing words by vectors, or embeddings, enables computational reasoning and is foundational to automating natural language tasks. For example, if word embeddings of similar words contain similar values, word similarity can be readily…

计算与语言 · 计算机科学 2022-02-02 Carl Allen

Knowledge graph embedding methods learn embeddings of entities and relations in a low dimensional space which can be used for various downstream machine learning tasks such as link prediction and entity matching. Various graph convolutional…

机器学习 · 计算机科学 2021-02-16 Nasrullah Sheikh , Xiao Qin , Berthold Reinwald , Christoph Miksovic , Thomas Gschwind , Paolo Scotton

Knowledge embeddings (KE) represent a knowledge graph (KG) by embedding entities and relations into continuous vector spaces. Existing methods are mainly structure-based or description-based. Structure-based methods learn representations…

计算与语言 · 计算机科学 2023-06-30 Xintao Wang , Qianyu He , Jiaqing Liang , Yanghua Xiao

Entity alignment seeks to find entities in different knowledge graphs (KGs) that refer to the same real-world object. Recent advancement in KG embedding impels the advent of embedding-based entity alignment, which encodes entities in a…

计算与语言 · 计算机科学 2020-07-21 Zequn Sun , Qingheng Zhang , Wei Hu , Chengming Wang , Muhao Chen , Farahnaz Akrami , Chengkai Li

Complex node interactions are common in knowledge graphs, and these interactions also contain rich knowledge information. However, traditional methods usually treat a triple as a training unit during the knowledge representation learning…

计算与语言 · 计算机科学 2021-10-01 Bin He , Di Zhou , Jinghui Xiao , Xin jiang , Qun Liu , Nicholas Jing Yuan , Tong Xu

Since large knowledge bases are typically incomplete, missing facts need to be inferred from observed facts in a task called knowledge base completion. The most successful approaches to this task have typically explored explicit paths…

人工智能 · 计算机科学 2018-04-24 Yelong Shen , Po-Sen Huang , Ming-Wei Chang , Jianfeng Gao

Knowledge graph (KG) embedding encodes the entities and relations from a KG into low-dimensional vector spaces to support various applications such as KG completion, question answering, and recommender systems. In real world, knowledge…

数据库 · 计算机科学 2022-06-02 Tianxing Wu , Arijit Khan , Melvin Yong , Guilin Qi , Meng Wang

This paper presents an exhaustive quantitative and qualitative evaluation of Large Language Models (LLMs) for Knowledge Graph (KG) construction and reasoning. We engage in experiments across eight diverse datasets, focusing on four…

计算与语言 · 计算机科学 2024-12-30 Yuqi Zhu , Xiaohan Wang , Jing Chen , Shuofei Qiao , Yixin Ou , Yunzhi Yao , Shumin Deng , Huajun Chen , Ningyu Zhang

This paper studies the problem of predicting missing relationships between entities in knowledge graphs through learning their representations. Currently, the majority of existing link prediction models employ simple but intuitive scoring…

计算与语言 · 计算机科学 2019-11-20 Xiang Kong , Xianyang Chen , Eduard Hovy

Many Knowledege Graphs (KGs) are frequently updated, forcing their Knowledge Graph Embeddings (KGEs) to adapt to these changes. To address this problem, continual learning techniques for KGEs incorporate embeddings for new entities while…

机器学习 · 计算机科学 2026-05-29 Gerard Pons , Besim Bilalli , Anna Queralt

Commonsense knowledge graph (CKG) is a special type of knowledge graph (KG), where entities are composed of free-form text. However, most existing CKG completion methods focus on the setting where all the entities are presented at training…

人工智能 · 计算机科学 2021-02-19 Bin Wang , Guangtao Wang , Jing Huang , Jiaxuan You , Jure Leskovec , C. -C. Jay Kuo

Inferring missing links in knowledge graphs (KG) has attracted a lot of attention from the research community. In this paper, we tackle a practical query answering task involving predicting the relation of a given entity pair. We frame this…

人工智能 · 计算机科学 2018-10-24 Wenhu Chen , Wenhan Xiong , Xifeng Yan , William Wang

The Natural Language Processing (NLP) community has recently seen outstanding progress, catalysed by the release of different Neural Network (NN) architectures. Neural-based approaches have proven effective by significantly increasing the…

计算与语言 · 计算机科学 2020-09-17 Diego Moussallem

The task of multi-hop link prediction within knowledge graphs (KGs) stands as a challenge in the field of knowledge graph analysis, as it requires the model to reason through and understand all intermediate connections before making a…

计算与语言 · 计算机科学 2025-06-17 Dong Shu , Tianle Chen , Mingyu Jin , Chong Zhang , Mengnan Du , Yongfeng Zhang

Knowledge graph completion (KGC) is a widely used method to tackle incompleteness in knowledge graphs (KGs) by making predictions for missing links. Description-based KGC leverages pre-trained language models to learn entity and relation…

计算与语言 · 计算机科学 2024-03-05 Derong Xu , Ziheng Zhang , Zhenxi Lin , Xian Wu , Zhihong Zhu , Tong Xu , Xiangyu Zhao , Yefeng Zheng , Enhong Chen

Entities may have complex interactions in a knowledge graph (KG), such as multi-step relationships, which can be viewed as graph contextual information of the entities. Traditional knowledge representation learning (KRL) methods usually…

计算与语言 · 计算机科学 2020-12-08 Bin He , Di Zhou , Jing Xie , Jinghui Xiao , Xin Jiang , Qun Liu

We study the knowledge extrapolation problem to embed new components (i.e., entities and relations) that come with emerging knowledge graphs (KGs) in the federated setting. In this problem, a model trained on an existing KG needs to embed…

计算与语言 · 计算机科学 2022-05-11 Mingyang Chen , Wen Zhang , Zhen Yao , Xiangnan Chen , Mengxiao Ding , Fei Huang , Huajun Chen