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Recent advancements in large language models (LLMs) have shown impressive versatility across various tasks. To eliminate their hallucinations, retrieval-augmented generation (RAG) has emerged as a powerful approach, leveraging external…

Computation and Language · Computer Science 2025-05-30 Yuzheng Cai , Zhenyue Guo , Yiwen Pei , Wanrui Bian , Weiguo Zheng

The automatic extraction of information is important for populating large web knowledge bases such as Wikidata. The temporal version of that task, temporal knowledge graph extraction (TKGE), involves extracting temporally grounded facts…

Computation and Language · Computer Science 2026-01-21 Arthur Amalvy , Hen-Hsen Huang

Text-based question answering (TBQA) has been studied extensively in recent years. Most existing approaches focus on finding the answer to a question within a single paragraph. However, many difficult questions require multiple supporting…

Computation and Language · Computer Science 2019-06-07 Yunxuan Xiao , Yanru Qu , Lin Qiu , Hao Zhou , Lei Li , Weinan Zhang , Yong Yu

This study aims to optimize the existing retrieval-augmented generation model (RAG) by introducing a graph structure to improve the performance of the model in dealing with complex knowledge reasoning tasks. The traditional RAG model has…

Information Retrieval · Computer Science 2024-11-07 Yuxin Dong , Shuo Wang , Hongye Zheng , Jiajing Chen , Zhenhong Zhang , Chihang Wang

Click-through rate prediction plays an important role in the field of recommender system and many other applications. Existing methods mainly extract user interests from user historical behaviors. However, behavioral sequences only contain…

Information Retrieval · Computer Science 2021-09-28 Yunfei Chu , Xiaofu Chang , Kunyang Jia , Jingzhen Zhou , Hongxia Yang

Temporal Knowledge Graphs (TKGs) have been developed and used in many different areas. Reasoning on TKGs that predicts potential facts (events) in the future brings great challenges to existing models. When facing a prediction task, human…

Artificial Intelligence · Computer Science 2021-06-02 Zixuan Li , Xiaolong Jin , Saiping Guan , Wei Li , Jiafeng Guo , Yuanzhuo Wang , Xueqi Cheng

Representation learning on dynamic graphs requires capturing complex dependencies that evolve across both time and structure. Existing approaches typically adopt fixed temporal decay schemes or predetermined structural propagation depths,…

Machine Learning · Computer Science 2026-05-29 Qian Chang , Ciprian Doru Giurcaneanu , Runsong Jia , Xia Li , Guoping Hu , Xiufeng Cheng , Jinqing Yang , Mengjia Wu , Yi Zhang

Temporal Knowledge Graph (TKG) completion models traditionally assume access to the entire graph during training. This overlooks challenges stemming from the evolving nature of TKGs, such as: (i) the model's requirement to generalize and…

Artificial Intelligence · Computer Science 2025-07-28 Mehrnoosh Mirtaheri , Ryan A. Rossi , Sungchul Kim , Kanak Mahadik , Tong Yu , Xiang Chen , Mohammad Rostami

Temporal Knowledge Graph Reasoning (TKGR) aims at inferring missing (especially future) events from historical data. Current evaluation in TKGR uniformly weights all events, ignoring that most are trivial repetitions, which overestimate the…

Artificial Intelligence · Computer Science 2026-05-14 Rikui Huang , Shengzhe Zhang , Wei Wei

Temporal interpolation often plays a crucial role to learn meaningful representations in dynamic scenes. In this paper, we propose a novel method to train spatiotemporal neural radiance fields of dynamic scenes based on temporal…

Computer Vision and Pattern Recognition · Computer Science 2023-03-30 Sungheon Park , Minjung Son , Seokhwan Jang , Young Chun Ahn , Ji-Yeon Kim , Nahyup Kang

Knowledge graph (KG) embedding encodes the entities and relations from a KG into low-dimensional vector spaces to support various applications such as KG completion, question answering, and recommender systems. In real world, knowledge…

Databases · Computer Science 2022-06-02 Tianxing Wu , Arijit Khan , Melvin Yong , Guilin Qi , Meng Wang

The Dissemination Process Classification (DPC) is a popular application of temporal graph classification. The aim of DPC is to classify different spreading patterns of information or pestilence within a community represented by…

Machine Learning · Computer Science 2023-07-06 Ziqiang Li , Kantaro Fujiwara , Gouhei Tanaka

Temporal Knowledge Graph Reasoning (TKGR) is the task of inferring missing facts for incomplete TKGs in complex scenarios (e.g., transductive and inductive settings), which has been gaining increasing attention. Recently, to mitigate…

Artificial Intelligence · Computer Science 2024-04-02 Miao Peng , Ben Liu , Wenjie Xu , Zihao Jiang , Jiahui Zhu , Min Peng

Predicting links in sparse, continuously evolving networks is a central challenge in network science. Conventional heuristic methods and deep learning models, including Graph Neural Networks (GNNs), are typically designed for static graphs…

Social and Information Networks · Computer Science 2026-02-17 Nafiseh Sadat Sajadi , Behnam Bahrak , Mahdi Jafari Siavoshani

Dynamic graph representation learning has emerged as a crucial research area, driven by the growing need for analyzing time-evolving graph data in real-world applications. While recent approaches leveraging recurrent neural networks (RNNs)…

Machine Learning · Computer Science 2024-10-28 Shengxiang Hu , Guobing Zou , Song Yang , Shiyi Lin , Yanglan Gan , Bofeng Zhang

Temporal Graph Learning (TGL) has become a prevalent technique across diverse real-world applications, especially in domains where data can be represented as a graph and evolves over time. Although TGL has recently seen notable progress in…

Machine Learning · Computer Science 2024-02-27 Weilin Cong , Jian Kang , Hanghang Tong , Mehrdad Mahdavi

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

Question answering over temporal knowledge graphs (TKGQA) has recently found increasing interest. TKGQA requires temporal reasoning techniques to extract the relevant information from temporal knowledge bases. The only existing TKGQA…

Artificial Intelligence · Computer Science 2023-07-21 Zifeng Ding , Zongyue Li , Ruoxia Qi , Jingpei Wu , Bailan He , Yunpu Ma , Zhao Meng , Shuo Chen , Ruotong Liao , Zhen Han , Volker Tresp

Dynamic interactions between entities are prevalent in domains like social platforms, financial systems, healthcare, and e-commerce. These interactions can be effectively represented as time-evolving graphs, where predicting future…

Machine Learning · Computer Science 2026-01-21 Sidharth Agarwal , Tanishq Dubey , Shubham Gupta , Srikanta Bedathur

Many real world graphs are inherently dynamic, constantly evolving with node and edge additions. These graphs can be represented by temporal graphs, either through a stream of edge events or a sequence of graph snapshots. Until now, the…

Machine Learning · Computer Science 2024-12-03 Shenyang Huang , Farimah Poursafaei , Reihaneh Rabbany , Guillaume Rabusseau , Emanuele Rossi
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