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Most knowledge graph completion (KGC) methods learn latent representations of entities and relations of a given graph by mapping them into a vector space. Although the majority of these methods focus on static knowledge graphs, a large…

Machine Learning · Computer Science 2023-09-29 Duygu Sezen Islakoglu , Mel Chekol , Yannis Velegrakis

Reasoning on knowledge graph (KG) has been studied for explainable recommendation due to it's ability of providing explicit explanations. However, current KG-based explainable recommendation methods unfortunately ignore the temporal…

Information Retrieval · Computer Science 2022-05-17 Yuyue Zhao , Xiang Wang , Jiawei Chen , Yashen Wang , Wei Tang , Xiangnan He , Haiyong Xie

Large language models (LLMs) excel at many language understanding tasks but struggle to reason over knowledge that evolves. To address this, recent work has explored augmenting LLMs with knowledge graphs (KGs) to provide structured,…

Machine Learning · Computer Science 2025-09-22 Junhong Lin , Song Wang , Xiaojie Guo , Julian Shun , Yada Zhu

Many real-world systems exhibit temporal, dynamic behaviors, which are captured as time series of complex agent interactions. To perform temporal reasoning, current methods primarily encode temporal dynamics through simple sequence-based…

Machine Learning · Computer Science 2024-01-09 Paridhi Maheshwari , Hongyu Ren , Yanan Wang , Rok Sosic , Jure Leskovec

Processing overlapping narrative documents, such as legal testimonies or historical accounts, often aims not for compression but for a unified, coherent, and chronologically sound text. Standard Multi-Document Summarization (MDS), with its…

Computation and Language · Computer Science 2025-12-23 Roger A. Finger , Eduardo G. Cortes , Sandro J. Rigo , Gabriel de O. Ramos

Temporal Knowledge Graphs have emerged as a powerful way of not only modeling static relationships between entities but also the dynamics of how relations evolve over time. As these informational structures can be used to store information…

Machine Learning · Computer Science 2025-10-29 Edward Markai , Sina Molavipour

Multi-relational temporal graphs are powerful tools for modeling real-world data, capturing the evolving and interconnected nature of entities over time. Recently, many novel models are proposed for ML on such graphs intensifying the need…

Knowledge Graph-based Question Answering (KGQA) plays a pivotal role in complex reasoning tasks but remains constrained by two persistent challenges: the structural heterogeneity of Knowledge Graphs(KGs) often leads to semantic mismatch…

Computation and Language · Computer Science 2026-05-19 Peng Yu , En Xu , Bin Chen , Haibiao Chen , Yinfei Xu

Recently there is an increasing scholarly interest in time-varying knowledge graphs, or temporal knowledge graphs (TKG). Previous research suggests diverse approaches to TKG reasoning that uses historical information. However, less…

Machine Learning · Computer Science 2022-09-14 Jihoon Sohn , Mingyu Derek Ma , Muhao Chen

Forecasting over Temporal Knowledge Graphs (TKGs) which predicts future facts based on historical ones has received much attention. Recent studies have introduced Large Language Models (LLMs) for this task to enhance the models'…

Computation and Language · Computer Science 2025-06-03 Long Bai , Zixuan Li , Xiaolong Jin , Jiafeng Guo , Xueqi Cheng , Tat-Seng Chua

Temporal sequences have become pervasive in various real-world applications. Consequently, the volume of data generated in the form of continuous time-event sequence(s) or CTES(s) has increased exponentially in the past few years. Thus, a…

Machine Learning · Computer Science 2023-07-20 Vinayak Gupta , Srikanta Bedathur , Abir De

Social events provide valuable insights into group social behaviors and public concerns and therefore have many applications in fields such as product recommendation and crisis management. The complexity and streaming nature of social…

Machine Learning · Computer Science 2021-08-31 Yuwei Cao , Hao Peng , Jia Wu , Yingtong Dou , Jianxin Li , Philip S. Yu

Time-Sensitive Question Answering (TSQA) demands the effective utilization of specific temporal contexts, encompassing multiple time-evolving facts, to address time-sensitive questions. This necessitates not only the parsing of temporal…

Computation and Language · Computer Science 2024-10-01 Wanqi Yang , Yanda Li , Meng Fang , Ling Chen

Building machines that can reason about physical events and their causal relationships is crucial for flexible interaction with the physical world. However, most existing physical and causal reasoning benchmarks are exclusively based on…

Artificial Intelligence · Computer Science 2025-05-28 Jiayuan Mao , Xuelin Yang , Xikun Zhang , Noah D. Goodman , Jiajun Wu

Temporal graph neural network has recently received significant attention due to its wide application scenarios, such as bioinformatics, knowledge graphs, and social networks. There are some temporal graph neural networks that achieve…

Machine Learning · Computer Science 2023-01-23 Mingyi Liu , Zhiying Tu , Xiaofei Xu , Zhongjie Wang

Outdated facts in temporal knowledge graphs (TKGs) result from exceeding the expiration date of facts, which negatively impact reasoning performance on TKGs. However, existing reasoning methods primarily focus on positive importance of…

Artificial Intelligence · Computer Science 2025-05-13 Feng Ding , Tingting Wang , Yupeng Gao , Shuo Yu , Jing Ren , Feng Xia

Retrieval-Augmented Generation (RAG) enhances language models by grounding responses in external information, yet explainability remains a critical challenge, particularly when retrieval relies on unstructured text. Knowledge graphs (KGs)…

Machine Learning · Computer Science 2025-07-14 Georgios Balanos , Evangelos Chasanis , Konstantinos Skianis , Evaggelia Pitoura

Spiking Neural Networks (SNNs) have attracted significant attention from researchers across various domains due to their brain-like information processing mechanism. However, SNNs typically grapple with challenges such as extended time…

Neural and Evolutionary Computing · Computer Science 2023-10-24 Yiting Dong , Dongcheng Zhao , Yi Zeng

Knowledge graphs have been demonstrated to be an effective tool for numerous intelligent applications. However, a large amount of valuable knowledge still exists implicitly in the knowledge graphs. To enrich the existing knowledge graphs,…

Artificial Intelligence · Computer Science 2020-11-17 Pengpeng Shao , Guohua Yang , Dawei Zhang , Jianhua Tao , Feihu Che , Tong Liu

Temporal relation prediction in incomplete temporal knowledge graphs (TKGs) is a popular temporal knowledge graph completion (TKGC) problem in both transductive and inductive settings. Traditional embedding-based TKGC models (TKGE) rely on…

Computation and Language · Computer Science 2023-04-11 Zhongwu Chen , Chengjin Xu , Fenglong Su , Zhen Huang , Yong Dou