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Knowledge graph embedding models (KGEMs) developed for link prediction learn vector representations for entities in a knowledge graph, known as embeddings. A common tacit assumption is the KGE entity similarity assumption, which states that…

Artificial Intelligence · Computer Science 2024-03-29 Nicolas Hubert , Heiko Paulheim , Armelle Brun , Davy Monticolo

Most knowledge graph embedding (KGE) methods tailored for link prediction focus on the entities and relations in the graph, giving little attention to other literal values, which might encode important information. Therefore, some…

Machine Learning · Computer Science 2025-04-02 Antonis Klironomos , Baifan Zhou , Zhuoxun Zheng , Gad-Elrab Mohamed , Heiko Paulheim , Evgeny Kharlamov

Adoption of recently developed methods from machine learning has given rise to creation of drug-discovery knowledge graphs (KG) that utilize the interconnected nature of the domain. Graph-based modelling of the data, combined with KG…

Machine Learning · Computer Science 2022-07-27 Stephen Bonner , Ufuk Kirik , Ola Engkvist , Jian Tang , Ian P Barrett

Knowledge graphs (KGs), structured as multi-relational data of entities and relations, are vital for tasks like data analysis and recommendation systems. Knowledge graph completion (KGC), or link prediction, addresses incompleteness of KGs…

Machine Learning · Computer Science 2025-06-16 Huiling Zhu , Yingqi Zeng

A key to knowledge graph embedding (KGE) is to choose a proper representation space, e.g., point-wise Euclidean space and complex vector space. In this paper, we propose a unified perspective of embedding and introduce uncertainty into KGE…

Machine Learning · Computer Science 2024-10-01 Changyi Xiao , Xiangnan He , Yixin Cao

Knowledge Graph Embeddings (KGEs) have been intensively explored in recent years due to their promise for a wide range of applications. However, existing studies focus on improving the final model performance without acknowledging the…

Machine Learning · Computer Science 2022-01-25 Xutan Peng , Guanyi Chen , Chenghua Lin , Mark Stevenson

Knowledge graph (KG) inference aims to address the natural incompleteness of KGs, including rule learning-based and KG embedding (KGE) models. However, the rule learning-based models suffer from low efficiency and generalization while KGE…

Artificial Intelligence · Computer Science 2022-08-23 Guanglin Niu , Bo Li , Yongfei Zhang , Shiliang Pu

Knowledge graphs are an efficient method for representing and connecting information across various concepts, useful in reasoning, question answering, and knowledge base completion tasks. They organize data by linking points, enabling…

Artificial Intelligence · Computer Science 2025-02-25 Saher Mohamed , Kirollos Farah , Abdelrahman Lotfy , Kareem Rizk , Abdelrahman Saeed , Shahenda Mohamed , Ghada Khouriba , Tamer Arafa

Knowledge Graph Embedding (KGE) has proven to be an effective approach to solving the Knowledge Graph Completion (KGC) task. Relational patterns which refer to relations with specific semantics exhibiting graph patterns are an important…

Artificial Intelligence · Computer Science 2023-08-16 Long Jin , Zhen Yao , Mingyang Chen , Huajun Chen , Wen Zhang

The task of link prediction for knowledge graphs is to predict missing relationships between entities. Knowledge graph embedding, which aims to represent entities and relations of a knowledge graph as low dimensional vectors in a continuous…

Artificial Intelligence · Computer Science 2022-04-26 Yanhui Peng , Jing Zhang

Knowledge graphs (KGs) consisting of triples are always incomplete, so it's important to do Knowledge Graph Completion (KGC) by predicting missing triples. Multi-Source KG is a common situation in real KG applications which can be viewed as…

Computation and Language · Computer Science 2020-10-27 Mingyang Chen , Wen Zhang , Zonggang Yuan , Yantao Jia , Huajun Chen

Many models learn representations of knowledge graph data by exploiting its low-rank latent structure, encoding known relations between entities and enabling unknown facts to be inferred. To predict whether a relation holds between…

Machine Learning · Computer Science 2021-01-19 Carl Allen , Ivana Balažević , Timothy Hospedales

Using knowledge graph embedding models (KGEMs) is a popular approach for predicting links in knowledge graphs (KGs). Traditionally, the performance of KGEMs for link prediction is assessed using rank-based metrics, which evaluate their…

Machine Learning · Computer Science 2023-12-08 Nicolas Hubert , Pierre Monnin , Armelle Brun , Davy Monticolo

Knowledge graphs represent real-world entities and their relations in a semantically-rich structure supported by ontologies. Exploring this data with machine learning methods often relies on knowledge graph embeddings, which produce latent…

Machine Learning · Computer Science 2023-06-23 Rita T. Sousa , Sara Silva , Catia Pesquita

Continual Knowledge Graph Embedding (CKGE) seeks to integrate new knowledge while preserving past information. However, existing methods struggle with efficiency and scalability due to two key limitations: (1) suboptimal knowledge…

Computation and Language · Computer Science 2025-06-11 Lijing Zhu , Qizhen Lan , Qing Tian , Wenbo Sun , Li Yang , Lu Xia , Yixin Xie , Xi Xiao , Tiehang Duan , Cui Tao , Shuteng Niu

Knowledge graphs (KGs) have become valuable knowledge resources in various applications, and knowledge graph embedding (KGE) methods have garnered increasing attention in recent years. However, conventional KGE methods still face challenges…

Computation and Language · Computer Science 2023-12-19 Mingyang Chen , Wen Zhang , Yuxia Geng , Zezhong Xu , Jeff Z. Pan , Huajun Chen

Knowledge representation is a long-history topic in AI, which is very important. A variety of models have been proposed for knowledge graph embedding, which projects symbolic entities and relations into continuous vector space. However,…

Machine Learning · Computer Science 2020-04-02 Han Xiao , Minlie Huang , Xiaoyan Zhu

Knowledge Graph Completion is a task of expanding the knowledge graph/base through estimating possible entities, or proper nouns, that can be connected using a set of predefined relations, or verb/predicates describing interconnections of…

Computation and Language · Computer Science 2021-01-25 Tong Chen , Sirou Zhu , Yiming Wen , Zhaomin Zheng

Knowledge graph (KG) embedding aims at embedding entities and relations in a KG into a lowdimensional latent representation space. Existing KG embedding approaches model entities andrelations in a KG by utilizing real-valued ,…

Machine Learning · Computer Science 2021-03-24 Chengjin Xu , Mojtaba Nayyeri , Yung-Yu Chen , Jens Lehmann

The autonomous driving (AD) industry is exploring the use of knowledge graphs (KGs) to manage the vast amount of heterogeneous data generated from vehicular sensors. The various types of equipped sensors include video, LIDAR and RADAR.…

Artificial Intelligence · Computer Science 2020-03-03 Ruwan Wickramarachchi , Cory Henson , Amit Sheth