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Question answering over knowledge graphs (KG-QA) is a vital topic in IR. Questions with temporal intent are a special class of practical importance, but have not received much attention in research. This work presents EXAQT, the first…

Information Retrieval · Computer Science 2021-09-21 Zhen Jia , Soumajit Pramanik , Rishiraj Saha Roy , Gerhard Weikum

Temporal Knowledge Graph Forecasting (TKGF) aims to predict future events based on the observed events in history. Recently, Large Language Models (LLMs) have exhibited remarkable capabilities, generating significant research interest in…

Information Retrieval · Computer Science 2025-01-22 He Chang , Jie Wu , Zhulin Tao , Yunshan Ma , Xianglin Huang , Tat-Seng Chua

We introduce the idea of temporal graphs, a representation that encodes temporal data into graphs while fully retaining the temporal information of the original data. This representation lets us explore the dynamic temporal properties of…

Physics and Society · Physics 2013-06-06 Vassilis Kostakos

A reliable and efficient representation of multivariate time series is crucial in various downstream machine learning tasks. In multivariate time series forecasting, each variable depends on its historical values and there are…

Machine Learning · Computer Science 2022-08-22 William T. Ng , K. Siu , Albert C. Cheung , Michael K. Ng

Long-context question answering over narrative tasks is challenging because correct answers often hinge on reconstructing a coherent timeline of events while preserving contextual f low in a limited context window. Retrievalaugmented…

Computation and Language · Computer Science 2025-10-14 Byeongjeong Kim , Jeonghyun Park , Joonho Yang , Hwanhee Lee

Accurate time-series forecasting is vital for numerous areas of application such as transportation, energy, finance, economics, etc. However, while modern techniques are able to explore large sets of temporal data to build forecasting…

Machine Learning · Statistics 2018-08-17 Filipe Rodrigues , Ioulia Markou , Francisco Pereira

Recent advances have enabled the extraction of vectorized features from digital historical maps. To fully leverage this information, however, the extracted features must be organized in a structured and meaningful way that supports…

Information Retrieval · Computer Science 2025-12-09 Ziyi Liu , Sidi Wu , Lorenz Hurni

Temporal knowledge graph (TKG) reasoning is a crucial task that has gained increasing research interest in recent years. Most existing methods focus on reasoning at past timestamps to complete the missing facts, and there are only a few…

Machine Learning · Computer Science 2021-09-10 Haohai Sun , Jialun Zhong , Yunpu Ma , Zhen Han , Kun He

Question Answering (QA) is a task that entails reasoning over natural language contexts, and many relevant works augment language models (LMs) with graph neural networks (GNNs) to encode the Knowledge Graph (KG) information. However, most…

Computation and Language · Computer Science 2023-04-26 Jinyoung Park , Hyeong Kyu Choi , Juyeon Ko , Hyeonjin Park , Ji-Hoon Kim , Jisu Jeong , Kyungmin Kim , Hyunwoo J. Kim

In this paper, we focus on task-specific question answering (QA). To this end, we introduce a method for generating exhaustive and high-quality training data, which allows us to train compact (e.g., run on a mobile device), task-specific QA…

Computation and Language · Computer Science 2024-01-25 Hai X. Pham , Isma Hadji , Xinnuo Xu , Ziedune Degutyte , Jay Rainey , Evangelos Kazakos , Afsaneh Fazly , Georgios Tzimiropoulos , Brais Martinez

Question-Answering (QA) from technical documents often involves questions whose answers are present in figures, such as flowcharts or flow diagrams. Text-based Retrieval Augmented Generation (RAG) systems may fail to answer such questions.…

Computation and Language · Computer Science 2025-08-01 Sumit Soman , H. G. Ranjani , Sujoy Roychowdhury , Venkata Dharma Surya Narayana Sastry , Akshat Jain , Pranav Gangrade , Ayaaz Khan

The analysis of events in dynamic environments poses a fundamental challenge in the development of intelligent agents and robots capable of interacting with humans. Current approaches predominantly utilize visual models. However, these…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Sergey Linok , Vadim Semenov , Anastasia Trunova , Oleg Bulichev , Dmitry Yudin

Conversational question answering systems often rely on semantic parsing to enable interactive information retrieval, which involves the generation of structured database queries from a natural language input. For information-seeking…

Computation and Language · Computer Science 2024-01-04 Phillip Schneider , Manuel Klettner , Kristiina Jokinen , Elena Simperl , Florian Matthes

The temporal aspect is a significant dimension of our reality. We notice the challenge that large language models (LLMs) face when engaging in temporal reasoning. Our preliminary experiments show that methods involving the generation of…

Computation and Language · Computer Science 2024-11-05 Xingxuan Li , Liying Cheng , Qingyu Tan , Hwee Tou Ng , Shafiq Joty , Lidong Bing

Knowledge in the real world is being updated constantly. However, it is costly to frequently update large language models (LLMs). Therefore, it is crucial for LLMs to understand the concept of temporal knowledge. However, prior works on…

Computation and Language · Computer Science 2024-07-15 Qingyu Tan , Hwee Tou Ng , Lidong Bing

There has been a recent surge in learning generative models for graphs. While impressive progress has been made on static graphs, work on generative modeling of temporal graphs is at a nascent stage with significant scope for improvement.…

Machine Learning · Computer Science 2022-08-26 Shubham Gupta , Sahil Manchanda , Srikanta Bedathur , Sayan Ranu

Previous works have shown that contextual information can improve the performance of neural machine translation (NMT). However, most existing document-level NMT methods only consider a few number of previous sentences. How to make use of…

Computation and Language · Computer Science 2021-09-15 Mingzhou Xu , Liangyou Li , Derek. F. Wong , Qun Liu , Lidia S. Chao

Large language models have demonstrated strong reasoning capabilities in general knowledge question answering. However, their ability to handle temporal information remains limited. To address this limitation, existing approaches often…

Computation and Language · Computer Science 2026-04-28 Yimin Deng , Yejing Wang , Zhenxi Lin , Zichuan Fu , Guoshuai Zhao , Derong Xu , Yefeng Zheng , Xiangyu Zhao , Xian Wu , Li Zhu , Xueming Qian

Temporal knowledge graph question answering (TKGQA) aims to answer time-sensitive questions by leveraging temporal knowledge bases. While Large Language Models (LLMs) demonstrate significant potential in TKGQA, current prompting strategies…

Artificial Intelligence · Computer Science 2026-02-10 Zihao Jiang , Miao Peng , Zhenyan Shan , Wenjie Xu , Ben Liu , Gong Chen , Ziqi Gao , Min Peng

Knowledge graphs have emerged as an effective tool for managing and standardizing semistructured domain knowledge in a human- and machine-interpretable way. In terms of graph-based domain applications, such as embeddings and graph neural…

Artificial Intelligence · Computer Science 2022-07-21 Franz Krause , Tobias Weller , Heiko Paulheim