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Table understanding (TU) has achieved promising advancements, but it faces the challenges of the scarcity of manually labeled tables and the presence of complex table structures.To address these challenges, we propose HGT, a framework with…

Computation and Language · Computer Science 2024-12-17 Rihui Jin , Yu Li , Guilin Qi , Nan Hu , Yuan-Fang Li , Jiaoyan Chen , Jianan Wang , Yongrui Chen , Dehai Min , Sheng Bi

Knowledge Graph (KG) completion has been excessively studied with a massive number of models proposed for the Link Prediction (LP) task. The main limitation of such models is their insensitivity to time. Indeed, the temporal aspect of…

Computation and Language · Computer Science 2021-06-09 Sebastien Montella , Lina Rojas-Barahona , Johannes Heinecke

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…

Machine Learning · Computer Science 2023-12-13 Xing Tang , Ling Chen

Modeling time-evolving knowledge graphs (KGs) has recently gained increasing interest. Here, graph representation learning has become the dominant paradigm for link prediction on temporal KGs. However, the embedding-based approaches largely…

Machine Learning · Computer Science 2021-04-02 Zhen Han , Peng Chen , Yunpu Ma , Volker Tresp

Temporal knowledge graphs (TKGs) inherently reflect the transient nature of real-world knowledge, as opposed to static knowledge graphs. Naturally, automatic TKG completion has drawn much research interests for a more realistic modeling of…

Machine Learning · Computer Science 2020-12-22 Jaehun Jung , Jinhong Jung , U Kang

Narrative data spans all disciplines and provides a coherent model of the world to the reader or viewer. Recent advancement in machine learning and Large Language Models (LLMs) have enable great strides in analyzing natural language.…

Complex Query Answering (CQA) has been extensively studied in recent years. In order to model data that is closer to real-world distribution, knowledge graphs with different modalities have been introduced. Triple KGs, as the classic KGs…

Computation and Language · Computer Science 2025-04-24 Hong Ting Tsang , Zihao Wang , Yangqiu Song

Semantic Knowledge Graphs (SKG) face challenges with scalability, flexibility, contextual understanding, and handling unstructured or ambiguous information. However, they offer formal and structured knowledge enabling highly interpretable…

Artificial Intelligence · Computer Science 2025-01-22 Aldo Gangemi , Andrea Giovanni Nuzzolese

Question Answering over Temporal Knowledge Graphs (TKGQA) has attracted growing interest for handling time-sensitive queries. However, existing methods still struggle with: 1) weak incorporation of temporal constraints in question…

Computation and Language · Computer Science 2026-02-24 Wuzhenghong Wen , Bowen Zhou , Jinwen Huang , Xianjie Wu , Yuwei Sun , Su Pan , Liang Li , Jianting Liu

Large Language Models (LLMs) have revolutionized Natural Language Processing (NLP) based applications including automated text generation, question answering, chatbots, and others. However, they face a significant challenge: hallucinations,…

Computation and Language · Computer Science 2024-11-22 Ernests Lavrinovics , Russa Biswas , Johannes Bjerva , Katja Hose

Hyper-relational Knowledge Graphs (HRKGs) extend traditional KGs beyond binary relations, enabling the representation of contextual, provenance, and temporal information in domains, such as historical events, sensor data, video content, and…

Machine Learning · Computer Science 2025-04-01 Shusaku Egami , Kyoumoto Matsushita , Takanori Ugai , Ken Fukuda

Currently, the main approach for Large Language Models (LLMs) to tackle the hallucination issue is incorporating Knowledge Graphs(KGs).However, LLMs typically treat KGs as plain text, extracting only semantic information and limiting their…

Computation and Language · Computer Science 2025-09-29 Yifang Zhang , Pengfei Duan , Yiwen Yang , Shengwu Xiong

The provision of multilingual event-centric temporal knowledge graphs such as EventKG enables structured access to representations of a large number of historical and contemporary events in a variety of language contexts. Timelines provide…

Information Retrieval · Computer Science 2020-12-07 Simon Gottschalk , Elena Demidova

Large Language Models (LLMs) have achieved impressive reasoning abilities, but struggle with temporal understanding, especially when questions involve multiple entities, compound operators, and evolving event sequences. Temporal Knowledge…

Computation and Language · Computer Science 2026-02-24 Xingyu Tan , Xiaoyang Wang , Qing Liu , Xiwei Xu , Xin Yuan , Liming Zhu , Wenjie Zhang

Knowledge graphs (KGs) are valuable for representing structured, interconnected information across domains, enabling tasks like semantic search, recommendation systems and inference. A pertinent challenge with KGs, however, is that many…

Computation and Language · Computer Science 2024-12-17 Haji Gul , Abdul Ghani Naim , Ajaz A. Bhat

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

Temporal Knowledge Graph (TKG) Forecasting aims at predicting links in Knowledge Graphs for future timesteps based on a history of Knowledge Graphs. To this day, standardized evaluation protocols and rigorous comparison across TKG models…

Machine Learning · Computer Science 2024-05-01 Julia Gastinger , Christian Meilicke , Federico Errica , Timo Sztyler , Anett Schuelke , Heiner Stuckenschmidt

Temporal knowledge graph (TKG) reasoning has become a hot topic due to its great value in many practical tasks. The key to TKG reasoning is modeling the structural information and evolutional patterns of the TKGs. While great efforts have…

Social and Information Networks · Computer Science 2025-01-07 Yuwei Du , Xinyue Liu , Wenxin Liang , Linlin Zong , Xianchao Zhang

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

Recent advances in Large Language Models (LLMs) have positioned them as a prominent solution for Natural Language Processing tasks. Notably, they can approach these problems in a zero or few-shot manner, thereby eliminating the need for…

Machine Learning · Computer Science 2025-05-07 Gerard Pons , Besim Bilalli , Anna Queralt