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Knowledge graphs (KGs), as structured representations of real world facts, are intelligent databases incorporating human knowledge that can help machine imitate the way of human problem solving. However, KGs are usually huge and there are…

Machine Learning · Computer Science 2023-06-27 Haotian Li , Hongri Liu , Yao Wang , Guodong Xin , Yuliang Wei

The incompleteness of Knowledge Graphs (KGs) is a crucial issue affecting the quality of AI-based services. In the scholarly domain, KGs describing research publications typically lack important information, hindering our ability to analyse…

Knowledge Graph Embedding (KGE) aims to learn representations for entities and relations. Most KGE models have gained great success, especially on extrapolation scenarios. Specifically, given an unseen triple (h, r, t), a trained model can…

Computation and Language · Computer Science 2022-05-13 Ren Li , Yanan Cao , Qiannan Zhu , Guanqun Bi , Fang Fang , Yi Liu , Qian Li

Knowledge graph embedding (KGE) models learn to project symbolic entities and relations into a continuous vector space based on the observed triplets. However, existing KGE models cannot make a proper trade-off between the graph context and…

Artificial Intelligence · Computer Science 2021-03-05 Zhiyuan Ning , Ziyue Qiao , Hao Dong , Yi Du , Yuanchun Zhou

We study the problem of embedding-based entity alignment between knowledge graphs (KGs). Previous works mainly focus on the relational structure of entities. Some further incorporate another type of features, such as attributes, for…

Artificial Intelligence · Computer Science 2019-06-07 Qingheng Zhang , Zequn Sun , Wei Hu , Muhao Chen , Lingbing Guo , Yuzhong Qu

NeuralKG is an open-source Python-based library for diverse representation learning of knowledge graphs. It implements three different series of Knowledge Graph Embedding (KGE) methods, including conventional KGEs, GNN-based KGEs, and…

Knowledge Graphs (KG) provide us with a structured, flexible, transparent, cross-system, and collaborative way of organizing our knowledge and data across various domains in society and industrial as well as scientific disciplines. KGs…

Knowledge graph embedding (KGE) methods have achieved great success in handling various knowledge graph (KG) downstream tasks. However, KGE methods may learn biased representations on low-quality KGs that are prevalent in the real world.…

Machine Learning · Computer Science 2024-05-21 Tianzhe Zhao , Jiaoyan Chen , Yanchi Ru , Qika Lin , Yuxia Geng , Jun Liu

Recently there has been a series of studies in knowledge graph embedding (KGE), which attempts to learn the embeddings of the entities and relations as numerical vectors and mathematical mappings via machine learning (ML). However, there…

Artificial Intelligence · Computer Science 2023-08-03 Zhipeng Tan , Baifan Zhou , Zhuoxun Zheng , Ognjen Savkovic , Ziqi Huang , Irlan-Grangel Gonzalez , Ahmet Soylu , Evgeny Kharlamov

Knowledge Graphs (KGs) store human knowledge in the form of entities (nodes) and relations, and are used extensively in various applications. KG embeddings are an effective approach to addressing tasks like knowledge discovery, link…

Artificial Intelligence · Computer Science 2025-02-03 Ioannis Reklos , Jacopo de Berardinis , Elena Simperl , Albert Meroño-Peñuela

In the task of Knowledge Graph Completion (KGC), the existing datasets and their inherent subtasks carry a wealth of shared knowledge that can be utilized to enhance the representation of knowledge triplets and overall performance. However,…

Computation and Language · Computer Science 2024-05-14 Yongxue Shan , Jie Zhou , Jie Peng , Xin Zhou , Jiaqian Yin , Xiaodong Wang

Knowledge graph (KG) embedding techniques use structured relationships between entities to learn low-dimensional representations of entities and relations. The traditional KG embedding techniques (such as TransE and DistMult) estimate these…

Machine Learning · Computer Science 2022-10-17 Saurav Manchanda

Information extraction methods proved to be effective at triple extraction from structured or unstructured data. The organization of such triples in the form of (head entity, relation, tail entity) is called the construction of Knowledge…

Artificial Intelligence · Computer Science 2022-08-25 Mohamad Zamini , Hassan Reza , Minou Rabiei

Current Continual Knowledge Graph Embedding (CKGE) methods primarily rely on translation-based embedding approaches, leveraging previously acquired knowledge to initialize new facts. While these methods often integrate fine-tuning or…

Information Retrieval · Computer Science 2025-08-29 Xinyan Wang , Jinshuo Liu , Kaijian Xie , Meng Wang , Cheng Bi , Juan Deng , Jeff Pan

Continual Knowledge Graph Embedding (CKGE) aims to continually learn embeddings for new knowledge, i.e., entities and relations, while retaining previously acquired knowledge. Most existing CKGE methods mitigate catastrophic forgetting via…

Information Retrieval · Computer Science 2026-04-21 Jing Qi , Yuxiang Wang , Zhiyuan Yu , Xiaoliang Xu , Yuanshi Zheng , Tianxing Wu

Although product graphs (PGs) have gained increasing attentions in recent years for their successful applications in product search and recommendations, the extensive power of PGs can be limited by the inevitable involvement of various…

Social and Information Networks · Computer Science 2022-02-22 Kewei Cheng , Xian Li , Yifan Ethan Xu , Xin Luna Dong , Yizhou Sun

Knowledge graph (KG) refinement mainly aims at KG completion and correction (i.e., error detection). However, most conventional KG embedding models only focus on KG completion with an unreasonable assumption that all facts in KG hold…

Artificial Intelligence · Computer Science 2019-07-30 Yu Zhao , Ji Liu

Adversarial attacks on knowledge graph embeddings (KGE) aim to disrupt the model's ability of link prediction by removing or inserting triples. A recent black-box method has attempted to incorporate textual and structural information to…

Computation and Language · Computer Science 2025-10-15 Ting Li , Yang Yang , Yipeng Yu , Liang Yao , Guoqing Chao , Ruifeng Xu

Reasoning in a temporal knowledge graph (TKG) is a critical task for information retrieval and semantic search. It is particularly challenging when the TKG is updated frequently. The model has to adapt to changes in the TKG for efficient…

Artificial Intelligence · Computer Science 2021-05-11 Jiapeng Wu , Yishi Xu , Yingxue Zhang , Chen Ma , Mark Coates , Jackie Chi Kit Cheung

Performing link prediction using knowledge graph embedding models has become a popular approach for knowledge graph completion. Such models employ a transformation function that maps nodes via edges into a vector space in order to measure…

Artificial Intelligence · Computer Science 2021-03-16 Mojtaba Nayyeri , Sahar Vahdati , Can Aykul , Jens Lehmann