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Knowledge base completion (KBC) aims to automatically infer missing facts by exploiting information already present in a knowledge base (KB). A promising approach for KBC is to embed knowledge into latent spaces and make predictions from…

Artificial Intelligence · Computer Science 2020-10-30 Ralph Abboud , İsmail İlkan Ceylan , Thomas Lukasiewicz , Tommaso Salvatori

In recent years, knowledge graph embedding models have been successfully applied in the transductive setting to tackle various challenging tasks including link prediction, and query answering. Yet, the transductive setting does not allow…

Machine Learning · Computer Science 2024-10-10 Caglar Demir , N'Dah Jean Kouagou , Arnab Sharma , Axel-Cyrille Ngonga Ngomo

Knowledge graph embedding (KGE) models are extensively studied for knowledge graph completion, yet their evaluation remains constrained by unrealistic benchmarks. Standard evaluation metrics rely on the closed-world assumption, which…

Machine Learning · Computer Science 2025-06-11 Nasim Shirvani-Mahdavi , Farahnaz Akrami , Chengkai Li

We present a unified study of some aspects of quantum bicrossproduct algebras of inhomogeneous Lie algebras, like Poincare, Galilei and Euclidean in N dimensions. The action associated to the bicrossproduct structure allows to obtain a…

Mathematical Physics · Physics 2009-11-07 Oscar Arratia , Mariano A. del Olmo

Addressing the incompleteness problem in knowledge graph remains a significant challenge. Current knowledge graph completion methods have their limitations. For example, ComDensE is prone to overfitting and suffers from the degradation with…

Information Retrieval · Computer Science 2024-10-10 Chuhong Yang , Bin Li , Nan Wu

Knowledge Graph Embeddings (KGE) have become a quite popular class of models specifically devised to deal with ontologies and graph structure data, as they can implicitly encode statistical dependencies between entities and relations in a…

Artificial Intelligence · Computer Science 2023-03-27 Michelangelo Diligenti , Francesco Giannini , Stefano Fioravanti , Caterina Graziani , Moreno Falaschi , Giuseppe Marra

Few-shot Knowledge Graph Completion (FKGC) infers missing triples from limited support samples, tackling long-tail distribution challenges. Existing methods, however, struggle to capture complex relational patterns and mitigate data…

Computation and Language · Computer Science 2026-01-22 Zilong Wang , Qingtian Zeng , Hua Duan , Cheng Cheng , Minghao Zou , Ziyang Wang

Answering first-order logical (FOL) queries over knowledge graphs (KG) remains a challenging task mainly due to KG incompleteness. Query embedding approaches this problem by computing the low-dimensional vector representations of entities,…

Databases · Computer Science 2025-03-05 Yunjie He , Mojtaba Nayyeri , Bo Xiong , Yuqicheng Zhu , Evgeny Kharlamov , Steffen Staab

Knowledge graph completion is the task of inferring missing facts based on existing data in a knowledge graph. Temporal knowledge graph completion (TKGC) is an extension of this task to temporal knowledge graphs, where each fact is…

Machine Learning · Computer Science 2021-09-21 Johannes Messner , Ralph Abboud , İsmail İlkan Ceylan

Knowledge graph embedding, which projects symbolic entities and relations into continuous vector spaces, is gaining increasing attention. Previous methods allow a single static embedding for each entity or relation, ignoring their intrinsic…

Artificial Intelligence · Computer Science 2020-04-07 Quan Wang , Pingping Huang , Haifeng Wang , Songtai Dai , Wenbin Jiang , Jing Liu , Yajuan Lyu , Yong Zhu , Hua Wu

Knowledge Graphs (KG) constitute a flexible representation of complex relationships between entities particularly useful for biomedical data. These KG, however, are very sparse with many missing edges (facts) and the visualisation of the…

Artificial Intelligence · Computer Science 2016-12-08 Armando Vieira

We consider a discrete latent variable model for two-way data arrays, which allows one to simultaneously produce clusters along one of the data dimensions (e.g. exchangeable observational units or features) and contiguous groups, or…

Knowledge graph completion is an important task that aims to predict the missing relational link between entities. Knowledge graph embedding methods perform this task by representing entities and relations as embedding vectors and modeling…

Machine Learning · Computer Science 2022-10-04 Hung Nghiep Tran , Atsuhiro Takasu

Learning knowledge graph (KG) embeddings has received increasing attention in recent years. Most embedding models in literature interpret relations as linear or bilinear mapping functions to operate on entity embeddings. However, we find…

Artificial Intelligence · Computer Science 2020-04-29 Zequn Sun , Jiacheng Huang , Wei Hu , Muchao Chen , Lingbing Guo , Yuzhong Qu

We use deep learning to model interactions across two or more sets of objects, such as user-movie ratings, protein-drug bindings, or ternary user-item-tag interactions. The canonical representation of such interactions is a matrix (or a…

Machine Learning · Statistics 2018-06-12 Jason Hartford , Devon R Graham , Kevin Leyton-Brown , Siamak Ravanbakhsh

Recently, Hyper-relational Knowledge Graphs (HKGs) have been proposed as an extension of traditional Knowledge Graphs (KGs) to better represent real-world facts with additional qualifiers. As a result, researchers have attempted to adapt…

Machine Learning · Computer Science 2025-08-06 Yubo Wang , Shimin Di , Zhili Wang , Haoyang Li , Fei Teng , Hao Xin , Lei Chen

Knowledge graphs (KGs), which store an extensive number of relational facts (head, relation, tail), serve various applications. While many downstream tasks highly rely on the expressive modeling and predictive embedding of KGs, most of the…

Information Retrieval · Computer Science 2024-05-01 Zihao Li , Yuyi Ao , Jingrui He

Molecular interactions often involve high-order relationships that cannot be fully captured by traditional graph-based models limited to pairwise connections. Hypergraphs naturally extend graphs by enabling multi-way interactions, making…

Machine Learning · Computer Science 2025-05-12 Tien Dang , Truong-Son Hy

Incorporating prior knowledge can improve existing pre-training models in cloze-style machine reading and has become a new trend in recent studies. Notably, most of the existing models have integrated external knowledge graphs (KG) and…

Computation and Language · Computer Science 2023-09-25 Shima Foolad , Kourosh Kiani

Distance based knowledge graph embedding methods show promising results on link prediction task, on which two topics have been widely studied: one is the ability to handle complex relations, such as N-to-1, 1-to-N and N-to-N, the other is…

Computation and Language · Computer Science 2021-05-19 Linlin Chao , Jianshan He , Taifeng Wang , Wei Chu