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Knowledge graphs have emerged as a sophisticated advancement and refinement of semantic networks, and their deployment is one of the critical methodologies in contemporary artificial intelligence. The construction of knowledge graphs is a…

Artificial Intelligence · Computer Science 2024-05-07 Daqian Shi

Modeling of relation pattern is the core focus of previous Knowledge Graph Embedding works, which represents how one entity is related to another semantically by some explicit relation. However, there is a more natural and intuitive…

Computation and Language · Computer Science 2021-10-05 Ren Li , Yanan Cao , Qiannan Zhu , Xiaoxue Li , Fang Fang

Inductive knowledge graph completion has been considered as the task of predicting missing triplets between new entities that are not observed during training. While most inductive knowledge graph completion methods assume that all entities…

Machine Learning · Computer Science 2023-08-21 Jaejun Lee , Chanyoung Chung , Joyce Jiyoung Whang

Knowledge graphs are freely aggregated, published, and edited in the Web of data, and thus may overlap. Hence, a key task resides in aligning (or matching) their content. This task encompasses the identification, within an aggregated…

Machine Learning · Computer Science 2021-10-22 Pierre Monnin , Chedy Raïssi , Amedeo Napoli , Adrien Coulet

Self-supervised entity alignment (EA) aims to link equivalent entities across different knowledge graphs (KGs) without seed alignments. The current SOTA self-supervised EA method draws inspiration from contrastive learning, originally…

Computation and Language · Computer Science 2022-10-11 Kaisheng Zeng , Zhenhao Dong , Lei Hou , Yixin Cao , Minghao Hu , Jifan Yu , Xin Lv , Juanzi Li , Ling Feng

Knowledge graphs (KGs) are a popular way to organise information based on ontologies or schemas and have been used across a variety of scenarios from search to recommendation. Despite advances in KGs, representing knowledge remains a…

Artificial Intelligence · Computer Science 2023-10-10 Christos Theodoropoulos , Natasha Mulligan , Thaddeus Stappenbeck , Joao Bettencourt-Silva

Abstract. Cross-lingual knowledge alignment is the cornerstone in building a comprehensive knowledge graph (KG), which can benefit various knowledge-driven applications. As the structures of KGs are usually sparse, attributes of entities…

Computation and Language · Computer Science 2020-03-03 Bo Chen , Jing Zhang , Xiaobin Tang , Hong Chen , Cuiping Li

Knowledge graph (KG) alignment and completion are usually treated as two independent tasks. While recent work has leveraged entity and relation alignments from multiple KGs, such as alignments between multilingual KGs with common entities…

Computation and Language · Computer Science 2022-10-19 Vinh Tong , Dat Quoc Nguyen , Trung Thanh Huynh , Tam Thanh Nguyen , Quoc Viet Hung Nguyen , Mathias Niepert

Knowledge Graphs (KGs) are widely employed in artificial intelligence applications, such as question-answering and recommendation systems. However, KGs are frequently found to be incomplete. While much of the existing literature focuses on…

Artificial Intelligence · Computer Science 2024-06-28 Sakher Khalil Alqaaidi , Krzysztof Kochut

Entity alignment (EA) aims at finding equivalent entities in different knowledge graphs (KGs). Embedding-based approaches have dominated the EA task in recent years. Those methods face problems that come from the geometric properties of…

Databases · Computer Science 2022-06-07 Yunjun Gao , Xiaoze Liu , Junyang Wu , Tianyi Li , Pengfei Wang , Lu Chen

Entity linking is the task of aligning mentions to corresponding entities in a given knowledge base. Previous studies have highlighted the necessity for entity linking systems to capture the global coherence. However, there are two common…

Computation and Language · Computer Science 2019-02-04 Zheng Fang , Yanan Cao , Dongjie Zhang , Qian Li , Zhenyu Zhang , Yanbing Liu

Knowledge Graphs (KG), composed of entities and relations, provide a structured representation of knowledge. For easy access to statistical approaches on relational data, multiple methods to embed a KG into f(KG) $\in$ R^d have been…

Machine Learning · Computer Science 2020-07-02 So Yeon Min , Preethi Raghavan , Peter Szolovits

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

In the last few years, the solution to Knowledge Graph (KG) completion via learning embeddings of entities and relations has attracted a surge of interest. Temporal KGs(TKGs) extend traditional Knowledge Graphs (KGs) by associating static…

Artificial Intelligence · Computer Science 2023-02-14 Zhongwu Chen , Chengjin Xu , Fenglong Su , Zhen Huang , You Dou

Embedding knowledge graphs (KGs) into continuous vector spaces is a focus of current research. Early works performed this task via simple models developed over KG triples. Recent attempts focused on either designing more complicated triple…

Artificial Intelligence · Computer Science 2018-06-08 Boyang Ding , Quan Wang , Bin Wang , Li Guo

Knowledge graphs (KGs) have recently been used for many tools and applications, making them rich resources in structured format. However, in the real world, KGs grow due to the additions of new knowledge in the form of entities and…

Artificial Intelligence · Computer Science 2024-09-10 Mehwish Alam , Genet Asefa Gesese , Pierre-Henri Paris

Semi-inductive link prediction (LP) in knowledge graphs (KG) is the task of predicting facts for new, previously unseen entities based on context information. Although new entities can be integrated by retraining the model from scratch in…

Computation and Language · Computer Science 2023-10-19 Adrian Kochsiek , Rainer Gemulla

Knowledge Graph (KG) completion research usually focuses on densely connected benchmark datasets that are not representative of real KGs. We curate two KG datasets that include biomedical and encyclopedic knowledge and use an existing…

Machine Learning · Computer Science 2021-06-15 Justin Lovelace , Denis Newman-Griffis , Shikhar Vashishth , Jill Fain Lehman , Carolyn Penstein Rosé

Learning knowledge graph (KG) embeddings is an emerging technique for a variety of downstream tasks such as summarization, link prediction, information retrieval, and question answering. However, most existing KG embedding models neglect…

Databases · Computer Science 2020-04-30 Gengchen Mai , Krzysztof Janowicz , Ling Cai , Rui Zhu , Blake Regalia , Bo Yan , Meilin Shi , Ni Lao

The entity type information in Knowledge Graphs (KGs) such as DBpedia, Freebase, etc. is often incomplete due to automated generation or human curation. Entity typing is the task of assigning or inferring the semantic type of an entity in a…

Computation and Language · Computer Science 2022-08-01 Russa Biswas , Jan Portisch , Heiko Paulheim , Harald Sack , Mehwish Alam