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Many mathematical models have been leveraged to design embeddings for representing Knowledge Graph (KG) entities and relations for link prediction and many downstream tasks. These mathematically-inspired models are not only highly scalable…

Artificial Intelligence · Computer Science 2023-09-25 Xiou Ge , Yun-Cheng Wang , Bin Wang , C. -C. Jay Kuo

The ability of knowledge graphs to represent complex relationships at scale has led to their adoption for various needs including knowledge representation, question-answering, and recommendation systems. Knowledge graphs are often…

Computation and Language · Computer Science 2023-05-18 Jason Youn , Ilias Tagkopoulos

Knowledge Graph based Retrieval-Augmented Generation (KG-RAG) is a technique that enhances Large Language Model (LLM) inference in tasks like Question Answering (QA) by retrieving relevant information from knowledge graphs (KGs). However,…

Artificial Intelligence · Computer Science 2025-09-01 Dongzhuoran Zhou , Yuqicheng Zhu , Xiaxia Wang , Yuan He , Jiaoyan Chen , Steffen Staab , Evgeny Kharlamov

Knowledge graph completion (KGC) revolves around populating missing triples in a knowledge graph using available information. Text-based methods, which depend on textual descriptions of triples, often encounter difficulties when these…

Computation and Language · Computer Science 2025-04-08 Haotian Li , Bin Yu , Yuliang Wei , Kai Wang , Richard Yi Da Xu , Bailing Wang

Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

Machine Learning · Computer Science 2025-04-15 Jasper Linders , Jakub M. Tomczak

Knowledge Graphs (KGs) represent real-world noisy raw information in a structured form, capturing relationships between entities. However, for dynamic real-world applications such as social networks, recommender systems, computational…

Artificial Intelligence · Computer Science 2020-03-26 Amit Sheth , Swati Padhee , Amelie Gyrard

Knowledge graph completion (KGC) aims to discover missing relations of query entities. Current text-based models utilize the entity name and description to infer the tail entity given the head entity and a certain relation. Existing…

Computation and Language · Computer Science 2023-10-20 Irene Li , Boming Yang

To alleviate sparsity and cold start problem of collaborative filtering based recommender systems, researchers and engineers usually collect attributes of users and items, and design delicate algorithms to exploit these additional…

Information Retrieval · Computer Science 2019-04-30 Hongwei Wang , Miao Zhao , Xing Xie , Wenjie Li , Minyi Guo

Knowledge graph completion (KGC), the task of predicting missing information based on the existing relational data inside a knowledge graph (KG), has drawn significant attention in recent years. However, the predictive power of KGC methods…

Computation and Language · Computer Science 2023-05-26 Weihang Zhang , Ovidiu Serban , Jiahao Sun , Yi-ke Guo

Recent advances in information extraction have motivated the automatic construction of huge Knowledge Graphs (KGs) by mining from large-scale text corpus. However, noisy facts are unavoidably introduced into KGs that could be caused by…

Computation and Language · Computer Science 2020-08-18 Yaqing Wang , Fenglong Ma , Jing 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…

Databases · Computer Science 2022-06-02 Tianxing Wu , Arijit Khan , Melvin Yong , Guilin Qi , Meng Wang

Knowledge graphs (KGs) have become a valuable asset for many AI applications. Although some KGs contain plenty of facts, they are widely acknowledged as incomplete. To address this issue, many KG completion methods are proposed. Among them,…

Information Retrieval · Computer Science 2022-01-24 Jiacheng Huang , Yao Zhao , Wei Hu , Zhen Ning , Qijin Chen , Xiaoxia Qiu , Chengfu Huo , Weijun Ren

Graph data is omnipresent and has a wide variety of applications, such as in natural science, social networks, or the semantic web. However, while being rich in information, graphs are often noisy and incomplete. As a result, graph…

Artificial Intelligence · Computer Science 2023-09-01 Luisa Werner , Nabil Layaïda , Pierre Genevès , Sarah Chlyah

Real-world Knowledge Graphs (KGs) often suffer from incompleteness, which limits their potential performance. Knowledge Graph Completion (KGC) techniques aim to address this issue. However, traditional KGC methods are computationally…

Computation and Language · Computer Science 2023-11-03 Alla Chepurova , Aydar Bulatov , Yuri Kuratov , Mikhail Burtsev

Knowledge Graphs (KGs) have found many applications in industry and academic settings, which in turn, have motivated considerable research efforts towards large-scale information extraction from a variety of sources. Despite such efforts,…

Machine Learning · Computer Science 2021-01-25 Andrea Rossi , Donatella Firmani , Antonio Matinata , Paolo Merialdo , Denilson Barbosa

Graph data completion is a fundamentally important issue as data generally has a graph structure, e.g., social networks, recommendation systems, and the Internet of Things. We consider a graph where each node has a data matrix, represented…

Machine Learning · Computer Science 2023-03-03 Xiao-Yang Liu , Ming Zhu

The Knowledge Graph Completion~(KGC) task aims to infer the missing entity from an incomplete triple. Existing embedding-based methods rely solely on triples in the KG, which is vulnerable to specious relation patterns and long-tail…

Artificial Intelligence · Computer Science 2025-05-01 Muzhi Li , Cehao Yang , Chengjin Xu , Xuhui Jiang , Yiyan Qi , Jian Guo , Ho-fung Leung , Irwin King

Machine Learning has been the quintessential solution for many AI problems, but learning is still heavily dependent on the specific training data. Some learning models can be incorporated with a prior knowledge in the Bayesian set up, but…

Computation and Language · Computer Science 2018-05-22 K M Annervaz , Somnath Basu Roy Chowdhury , Ambedkar Dukkipati

To alleviate data sparsity and cold-start problems of traditional recommender systems (RSs), incorporating knowledge graphs (KGs) to supplement auxiliary information has attracted considerable attention recently. However, simply integrating…

Information Retrieval · Computer Science 2022-01-04 Yankai Chen , Yaming Yang , Yujing Wang , Jing Bai , Xiangchen Song , Irwin King

Knowledge Graph (KG) completion is an important task that greatly benefits knowledge discovery in many fields (e.g. biomedical research). In recent years, learning KG embeddings to perform this task has received considerable attention.…

Machine Learning · Computer Science 2022-08-01 Adil Bahaj , Safae Lhazmir , Mounir Ghogho