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Knowledge graphs (KGs) have become the standard technology for the representation of factual information in applications such as recommendation engines, search, and question-answering systems. However, the continual updating of KGs, as well…

Artificial Intelligence · Computer Science 2023-07-24 Walid S. Saba

Despite the recent popularity of knowledge graph (KG) related tasks and benchmarks such as KG embeddings, link prediction, entity alignment and evaluation of the reasoning abilities of pretrained language models as KGs, the structure and…

Machine Learning · Computer Science 2023-11-14 Nedelina Teneva , Estevam Hruschka

Representation Learning of words and Knowledge Graphs (KG) into low dimensional vector spaces along with its applications to many real-world scenarios have recently gained momentum. In order to make use of multiple KG embeddings for…

Computation and Language · Computer Science 2020-04-16 Russa Biswas , Mehwish Alam , Harald Sack

In pace with developments in the research field of artificial intelligence, knowledge graphs (KGs) have attracted a surge of interest from both academia and industry. As a representation of semantic relations between entities, KGs have…

Computation and Language · Computer Science 2022-10-04 Phillip Schneider , Tim Schopf , Juraj Vladika , Mikhail Galkin , Elena Simperl , Florian Matthes

Knowledge Graphs (KGs) have been popularized during the last decade, for instance, they are used widely in the context of the web. In 2012 Google has presented the Google's Knowledge Graph that is used to improve their web search services.…

Databases · Computer Science 2022-08-17 Elwin Huaman

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

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

Research done using model organisms has been fundamental to the biological understanding of human genes, diseases and phenotypes. Model organisms provide tractable systems for experiments to enhance understanding of biological mechanisms…

Knowledge graph completion (KGC) aims to discover missing relationships between entities in knowledge graphs (KGs). Most prior KGC work focuses on learning embeddings for entities and relations through a simple scoring function. Yet, a…

Artificial Intelligence · Computer Science 2023-07-13 Yun-Cheng Wang , Xiou Ge , Bin Wang , C. -C. Jay Kuo

The chase is a well-established family of algorithms used to materialize Knowledge Bases (KBs), like Knowledge Graphs (KGs), to tackle important tasks like query answering under dependencies or data cleaning. A general problem of chase…

Databases · Computer Science 2021-02-05 Efthymia Tsamoura , David Carral , Enrico Malizia , Jacopo Urbani

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

Previous cross-lingual knowledge graph (KG) alignment studies rely on entity embeddings derived only from monolingual KG structural information, which may fail at matching entities that have different facts in two KGs. In this paper, we…

Machine Learning · Computer Science 2019-07-31 Kun Xu , Liwei Wang , Mo Yu , Yansong Feng , Yan Song , Zhiguo Wang , Dong Yu

Knowledge graphs have emerged as a popular method for injecting up-to-date, factual knowledge into large language models (LLMs). This is typically achieved by converting the knowledge graph into text that the LLM can process in context.…

Computation and Language · Computer Science 2025-04-10 Elan Markowitz , Krupa Galiya , Greg Ver Steeg , Aram Galstyan

Knowledge graphs (KGs) have become vitally important in modern recommender systems, effectively improving performance and interpretability. Fundamentally, recommender systems aim to identify user interests based on historical interactions…

Information Retrieval · Computer Science 2024-03-20 Zezhong Xu , Yincen Qu , Wen Zhang , Lei Liang , Huajun Chen

The scoring function, which measures the plausibility of triplets in knowledge graphs (KGs), is the key to ensure the excellent performance of KG embedding, and its design is also an important problem in the literature. Automated machine…

Machine Learning · Computer Science 2021-04-23 Shimin Di , Quanming Yao , Yongqi Zhang , Lei Chen

Knowledge graphs (KGs) store rich facts about the real world. In this paper, we study KG alignment, which aims to find alignment between not only entities but also relations and classes in different KGs. Alignment at the entity level can…

Databases · Computer Science 2023-06-21 Jiacheng Huang , Zequn Sun , Qijin Chen , Xiaozhou Xu , Weijun Ren , Wei Hu

We present a simple linear programming (LP) based method to learn compact and interpretable sets of rules encoding the facts in a knowledge graph (KG) and use these rules to solve the KG completion problem. Our LP model chooses a set of…

Artificial Intelligence · Computer Science 2023-03-07 Sanjeeb Dash , Joao Goncalves

Knowledge graphs (KGs) are inherently incomplete because of incomplete world knowledge and bias in what is the input to the KG. Additionally, world knowledge constantly expands and evolves, making existing facts deprecated or introducing…

Knowledge Graphs (KGs) play a pivotal role in advancing various AI applications, with the semantic web community's exploration into multi-modal dimensions unlocking new avenues for innovation. In this survey, we carefully review over 300…

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…