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Knowledge graphs (KGs) have been increasingly employed for link prediction and recommendation using real-world datasets. However, the majority of current methods rely on static data, neglecting the dynamic nature and the hidden…

Artificial Intelligence · Computer Science 2024-02-20 Ruiyi Yang , Flora D. Salim , Hao Xue

Temporal knowledge graph (TKG) reasoning aims to predict future events from historical facts. A key challenge lies in jointly capturing two sources of predictive information in TKGs: historical evidence and evolutionary dynamics. However,…

Computation and Language · Computer Science 2026-05-07 Shuai-long Lei , Xiaobin Zhu , Jiarui Liang , Guoxi Sun , Zhiyu Fang , Xu-Cheng Yin

Temporal Graph Learning, which aims to model the time-evolving nature of graphs, has gained increasing attention and achieved remarkable performance recently. However, in reality, graph structures are often incomplete and noisy, which…

Machine Learning · Computer Science 2023-08-16 Haozhen Zhang , Xueting Han , Xi Xiao , Jing Bai

The standard evaluation protocol for measuring the quality of Knowledge Graph Completion methods - the task of inferring new links to be added to a graph - typically involves a step which ranks every entity of a Knowledge Graph to assess…

Artificial Intelligence · Computer Science 2024-02-02 Filip Cornell , Yifei Jin , Jussi Karlgren , Sarunas Girdzijauskas

The rapid advancements in large language models (LLMs) have ignited interest in the temporal knowledge graph (tKG) domain, where conventional embedding-based and rule-based methods dominate. The question remains open of whether pre-trained…

Computation and Language · Computer Science 2024-04-18 Ruotong Liao , Xu Jia , Yangzhe Li , Yunpu Ma , Volker Tresp

Knowledge Graph (KG) completion is the problem of extending an incomplete KG with missing facts. A key feature of Machine Learning approaches for KG completion is their ability to learn inference patterns, so that the predicted facts are…

Artificial Intelligence · Computer Science 2023-06-09 Shuwen Liu , Bernardo Cuenca Grau , Ian Horrocks , Egor V. Kostylev

Temporal Knowledge Graph Reasoning (TKGR) aims to complete missing factual elements along the timeline. Depending on the temporal position of the query, the task is categorized into interpolation and extrapolation. Existing interpolation…

Machine Learning · Computer Science 2026-01-12 Jiawei Shen , Jia Zhu , Hanghui Guo , Weijie Shi , Guoqing Ma , Yidan Liang , Jingjiang Liu , Hao Chen , Shimin Di

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

Knowledge graphs (KGs) are of great importance to many real world applications, but they generally suffer from incomplete information in the form of missing relations between entities. Knowledge graph completion (also known as relation…

Machine Learning · Computer Science 2021-03-02 Zijun Cui , Pavan Kapanipathi , Kartik Talamadupula , Tian Gao , Qiang Ji

Short-term route prediction on road networks allows us to anticipate the future trajectories of road users, enabling various applications ranging from dynamic traffic control to personalized navigation. Despite recent advances in this area,…

Social and Information Networks · Computer Science 2025-10-02 Yihong Tang , Zhan Zhao , Weipeng Deng , Shuyu Lei , Yuebing Liang , Zhenliang Ma

Stemming from traditional knowledge graphs (KGs), hyper-relational KGs (HKGs) provide additional key-value pairs (i.e., qualifiers) for each KG fact that help to better restrict the fact validity. In recent years, there has been an…

Artificial Intelligence · Computer Science 2024-10-07 Zifeng Ding , Jingcheng Wu , Jingpei Wu , Yan Xia , Volker Tresp

Most real-world knowledge graphs are characterized by a long-tail relation frequency distribution where a significant fraction of relations occurs only a handful of times. This observation has given rise to recent interest in low-shot…

Machine Learning · Computer Science 2020-10-26 Mehrnoosh Mirtaheri , Mohammad Rostami , Xiang Ren , Fred Morstatter , Aram Galstyan

Temporal knowledge graphs (TKGs) represent time-stamped relational facts and support a wide range of reasoning tasks over evolving events. However, existing methods produce entity representations that are static at the entity level, in that…

Artificial Intelligence · Computer Science 2026-05-11 Seunghan Lee , Jun Seo , Jaehoon Lee , Sungdong Yoo , Minjae Kim , Tae Yoon Lim , Dongwan Kang , Hwanil Choi , SoonYoung Lee , Wonbin Ahn

Temporal knowledge graph reasoning (TKGR) aims to predict future events by inferring missing entities with dynamic knowledge structures. Existing LLM-based reasoning methods prioritize contextual over structural relations, struggling to…

Machine Learning · Computer Science 2026-01-30 Shiqi Fan , Quanming Yao , Hongyi Nie , Wentao Ma , Zhen Wang , Wen Hua

Temporal knowledge graph completion (TKGC) has become a popular approach for reasoning over the event and temporal knowledge graphs, targeting the completion of knowledge with accurate but missing information. In this context, tensor…

Machine Learning · Computer Science 2022-04-12 Ioannis Dikeoulias , Saadullah Amin , Günter Neumann

There has been an increasing interest in inferring future links on temporal knowledge graphs (KG). While links on temporal KGs vary continuously over time, the existing approaches model the temporal KGs in discrete state spaces. To this…

Machine Learning · Computer Science 2022-06-03 Zhen Han , Zifeng Ding , Yunpu Ma , Yujia Gu , Volker Tresp

The Hawkes process has become a standard method for modeling self-exciting event sequences with different event types. A recent work has generalized the Hawkes process to a neurally self-modulating multivariate point process, which enables…

Machine Learning · Computer Science 2020-06-16 Zhen Han , Yunpu Ma , Yuyi Wang , Stephan Günnemann , Volker Tresp

Knowledge graph completion (KGC) aims to predict the missing links among knowledge graph (KG) entities. Though various methods have been developed for KGC, most of them can only deal with the KG entities seen in the training set and cannot…

Artificial Intelligence · Computer Science 2022-11-16 Zifeng Ding , Jingpei Wu , Bailan He , Yunpu Ma , Zhen Han , Volker Tresp

Knowledge Graphs (KGs) and their machine learning counterpart, Knowledge Graph Embedding Models (KGEMs), have seen ever-increasing use in a wide variety of academic and applied settings. In particular, KGEMs are typically applied to KGs to…

Machine Learning · Computer Science 2024-12-16 Jeffrey Sardina , John D. Kelleher , Declan O'Sullivan

Knowledge Base Question Answering (KBQA) has been a long-standing field to answer questions based on knowledge bases. Recently, the evolving dynamics of knowledge have attracted a growing interest in Temporal Knowledge Graph Question…

Computation and Language · Computer Science 2026-01-15 Miao Su , Zixuan Li , Zhuo Chen , Long Bai , Xiaolong Jin , Jiafeng Guo