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Knowledge Graphs (KGs) are foundational structures in many AI applications, representing entities and their interrelations through triples. However, triple-based KGs lack the contextual information of relational knowledge, like temporal…

人工智能 · 计算机科学 2024-07-01 Chengjin Xu , Muzhi Li , Cehao Yang , Xuhui Jiang , Lumingyuan Tang , Yiyan Qi , Jian Guo

Knowledge Graph (KG) embedding has attracted more attention in recent years. Most KG embedding models learn from time-unaware triples. However, the inclusion of temporal information beside triples would further improve the performance of a…

机器学习 · 计算机科学 2020-10-29 Chengjin Xu , Mojtaba Nayyeri , Fouad Alkhoury , Hamed Shariat Yazdi , Jens Lehmann

Link prediction on graphs has applications spanning from recommender systems to drug discovery. Temporal link prediction (TLP) refers to predicting future links in a temporally evolving graph and adds additional complexity related to the…

机器学习 · 计算机科学 2025-04-18 Ayan Chatterjee , Barbara Ikica , Babak Ravandi , John Palowitch

Temporal Knowledge Graph Question Answering (TKGQA) aims to answer questions with temporal intent over Temporal Knowledge Graphs (TKGs). The core challenge of this task lies in understanding the complex semantic information regarding…

计算与语言 · 计算机科学 2024-04-03 Zhuo Chen , Zhao Zhang , Zixuan Li , Fei Wang , Yutao Zeng , Xiaolong Jin , Yongjun Xu

Reasoning on the knowledge graph (KG) aims to infer new facts from existing ones. Methods based on the relational path have shown strong, interpretable, and transferable reasoning ability. However, paths are naturally limited in capturing…

人工智能 · 计算机科学 2022-01-24 Yongqi Zhang , Quanming Yao

Temporal Graph Networks (TGNs) have demonstrated significant success in dynamic graph tasks such as link prediction and node classification. Both tasks comprise transductive settings, where the model predicts links among known nodes, and in…

机器学习 · 计算机科学 2025-04-16 Jiafeng Xiong , Rizos Sakellariou

Temporal knowledge graphs (TKGs) are valuable resources for capturing evolving relationships among entities, yet they are often plagued by noise, necessitating robust anomaly detection mechanisms. Existing dynamic graph anomaly detection…

人工智能 · 计算机科学 2024-09-04 Jiasheng Zhang , Rex Ying , Jie Shao

Temporal Knowledge Graphs (TKGs) incorporate a temporal dimension, allowing for a precise capture of the evolution of knowledge and reflecting the dynamic nature of the real world. Typically, TKGs contain complex geometric structures, with…

人工智能 · 计算机科学 2024-04-01 Jiapu Wang , Zheng Cui , Boyue Wang , Shirui Pan , Junbin Gao , Baocai Yin , Wen Gao

Temporal knowledge graphs (TKGs) have been identified as a promising approach to represent the dynamics of facts along the timeline. The extrapolation of TKG is to predict unknowable facts happening in the future, holding significant…

人工智能 · 计算机科学 2023-12-05 Wei Chen , Huaiyu Wan , Yuting Wu , Shuyuan Zhao , Jiayaqi Cheng , Yuxin Li , Youfang Lin

Entity alignment (EA) is a fundamental data integration task that identifies equivalent entities between different knowledge graphs (KGs). Temporal Knowledge graphs (TKGs) extend traditional knowledge graphs by introducing timestamps, which…

信息检索 · 计算机科学 2023-02-09 Xiaoze Liu , Junyang Wu , Tianyi Li , Lu Chen , Yunjun Gao

Knowledge graphs (KGs) store enormous facts as relationships between entities. Due to the long-tailed distribution of relations and the incompleteness of KGs, there is growing interest in few-shot knowledge graph completion (FKGC). Existing…

信息检索 · 计算机科学 2024-08-06 Zicheng Zhao , Linhao Luo , Shirui Pan , Chengqi Zhang , Chen Gong

Temporal graph learning aims to generate high-quality representations for graph-based tasks with dynamic information, which has recently garnered increasing attention. In contrast to static graphs, temporal graphs are typically organized as…

机器学习 · 计算机科学 2024-04-30 Meng Liu , Ke Liang , Yawei Zhao , Wenxuan Tu , Sihang Zhou , Xinbiao Gan , Xinwang Liu , Kunlun He

Knowledge Graph Completion (KGC) aims at automatically predicting missing links for large-scale knowledge graphs. A vast number of state-of-the-art KGC techniques have got published at top conferences in several research fields, including…

计算与语言 · 计算机科学 2020-07-10 Zhiqing Sun , Shikhar Vashishth , Soumya Sanyal , Partha Talukdar , Yiming Yang

Temporal hypergraphs provide a powerful paradigm for modeling time-dependent, higher-order interactions in complex systems. Representation learning for hypergraphs is essential for extracting patterns of the higher-order interactions that…

机器学习 · 计算机科学 2023-11-07 Ali Behrouz , Farnoosh Hashemi , Sadaf Sadeghian , Margo Seltzer

We study path-based graph queries that, in addition to navigation through edges, also perform navigation through time. This allows asking questions about the dynamics of networks, like traffic movement, cause-effect relationships, or the…

数据库 · 计算机科学 2025-07-31 Muhammad Adnan , Diego Calvanese , Julien Corman , Anton Dignös , Werner Nutt , Ognjen Savković

Temporal Knowledge Graph (TKG) representation learning embeds entities and event types into a continuous low-dimensional vector space by integrating the temporal information, which is essential for downstream tasks, e.g., event prediction…

机器学习 · 计算机科学 2023-12-13 Xing Tang , Ling Chen

The problem of career trajectory prediction (CTP) aims to predict one's future employer or job position. While several CTP methods have been developed for this problem, we posit that none of these methods (1) jointly considers the mutual…

机器学习 · 计算机科学 2024-12-30 Yeon-Chang Lee , JaeHyun Lee , Michiharu Yamashita , Dongwon Lee , Sang-Wook Kim

Question answering over temporal knowledge graphs (TKGs) is crucial for understanding evolving facts and relationships, yet its development is hindered by limited datasets and difficulties in generating custom QA pairs. We propose a novel…

计算机科学中的逻辑 · 计算机科学 2025-01-09 Qiang Sun , Sirui Li , Du Huynh , Mark Reynolds , Wei Liu

Human-curated knowledge graphs provide critical supportive information to various natural language processing tasks, but these graphs are usually incomplete, urging auto-completion of them. Prevalent graph embedding approaches, e.g.,…

计算与语言 · 计算机科学 2021-02-25 Bo Wang , Tao Shen , Guodong Long , Tianyi Zhou , Yi Chang

Temporal graph learning is pivotal for deciphering dynamic systems, where the core challenge lies in explicitly modeling the underlying evolving patterns that govern network transformation. However, prevailing methods are predominantly…

机器学习 · 计算机科学 2026-02-20 Yijun Ma , Zehong Wang , Weixiang Sun , Yanfang Ye