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Generative AI, such as Large Language Models (LLMs), has achieved impressive progress but still produces hallucinations and unverifiable claims, limiting reliability in sensitive domains. Retrieval-Augmented Generation (RAG) improves…

Large Language Models (LLMs) as interactive agents show significant promise in Knowledge Graph Question Answering (KGQA) but often struggle with the semantic gap between natural language queries and structured knowledge graph (KG)…

Computation and Language · Computer Science 2025-10-20 Jingao Xu , Shuoyoucheng Ma , Xin Song , Rong Jiang , Hongkui Tu , Bin Zhou

In recent years, Natural Language Processing (NLP) has played a significant role in various Artificial Intelligence (AI) applications such as chatbots, text generation, and language translation. The emergence of large language models (LLMs)…

Computation and Language · Computer Science 2024-07-10 Amanda Kau , Xuzeng He , Aishwarya Nambissan , Aland Astudillo , Hui Yin , Amir Aryani

Knowledge Graphs (KG) constitute a flexible representation of complex relationships between entities particularly useful for biomedical data. These KG, however, are very sparse with many missing edges (facts) and the visualisation of the…

Artificial Intelligence · Computer Science 2016-12-08 Armando Vieira

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

Temporal Knowledge Graphs (TKGs) represent dynamic facts as timestamped relations between entities. TKG completion involves forecasting missing or future links, requiring models to reason over time-evolving structure. While LLMs show…

Machine Learning · Computer Science 2025-05-26 Ömer Faruk Akgül , Feiyu Zhu , Yuxin Yang , Rajgopal Kannan , Viktor Prasanna

Large Language Models (LLMs) have achieved impressive capabilities in language understanding and generation, yet they continue to underperform on knowledge-intensive reasoning tasks due to limited access to structured context and multi-hop…

Computation and Language · Computer Science 2025-06-26 Travis Thompson , Seung-Hwan Lim , Paul Liu , Ruoying He , Dongkuan Xu

Knowledge graphs (KGs) are vital for knowledge-intensive tasks and have shown promise in reducing hallucinations in large language models (LLMs). However, constructing high-quality KGs remains difficult, requiring accurate information…

Computation and Language · Computer Science 2025-10-14 Ruirui Chen , Weifeng Jiang , Chengwei Qin , Bo Xiong , Fiona Liausvia , Dongkyu Choi , Boon Kiat Quek

Retrieval-Augmented Generation (RAG) has significantly mitigated the hallucinations of Large Language Models (LLMs) by grounding the generation with external knowledge. Recent extensions of RAG to graph-based retrieval offer a promising…

Machine Learning · Computer Science 2025-09-23 Jialin Chen , Houyu Zhang , Seongjun Yun , Alejandro Mottini , Rex Ying , Xiang Song , Vassilis N. Ioannidis , Zheng Li , Qingjun Cui

Integrating Large Language Models (LLMs) with Knowledge Graphs (KGs) results in complex systems with numerous hyperparameters that directly affect performance. While such systems are increasingly common in retrieval-augmented generation,…

Artificial Intelligence · Computer Science 2025-06-02 Vasilije Markovic , Lazar Obradovic , Laszlo Hajdu , Jovan Pavlovic

Although Large Language Models achieve strong success in many tasks, they still suffer from hallucinations and knowledge deficiencies in real-world applications. Many knowledge graph-based retrieval-augmented generation (KG-RAG) methods…

Artificial Intelligence · Computer Science 2025-05-28 Hairu Wang , Yuan Feng , Xike Xie , S Kevin Zhou

Knowledge Graph (KG) can effectively integrate valuable information from massive data, and thus has been rapidly developed and widely used in many fields. Traditional KG construction methods rely on manual annotation, which often consumes a…

Computation and Language · Computer Science 2026-04-22 Qiubai Zhu , Qingwang Wang , Haibin Yuan , Wei Chen , Tao Shen

This comprehensive review aims to provide an overview of the current state of Healthcare Knowledge Graphs (HKGs), including their construction, utilization models, and applications across various healthcare and biomedical research domains.…

Multimodal knowledge graph link prediction aims to improve the accuracy and efficiency of link prediction tasks for multimodal data. However, for complex multimodal information and sparse training data, it is usually difficult to achieve…

Artificial Intelligence · Computer Science 2023-01-12 Yilin Wen , Biao Luo , Yuqian Zhao

The important challenge of keeping knowledge in Large Language Models (LLMs) up-to-date has led to the development of various methods for incorporating new facts. However, existing methods for such knowledge editing still face difficulties…

Computation and Language · Computer Science 2024-12-05 Ruirui Chen , Weifeng Jiang , Chengwei Qin , Ishaan Singh Rawal , Cheston Tan , Dongkyu Choi , Bo Xiong , Bo Ai

Artificial intelligence (AI) is reshaping modern healthcare by advancing disease diagnosis, treatment decision-making, and biomedical research. Among AI technologies, large language models (LLMs) have become especially impactful, enabling…

Artificial Intelligence · Computer Science 2025-11-18 Zhengda Wang , Daqian Shi , Jingyi Zhao , Xiaolei Diao , Xiongfeng Tang , Yanguo Qin

A Temporal Knowledge Graph (TKG) is a sequence of KGs with respective timestamps, which adopts quadruples in the form of (\emph{subject}, \emph{relation}, \emph{object}, \emph{timestamp}) to describe dynamic facts. TKG reasoning has…

Artificial Intelligence · Computer Science 2022-10-19 Zixuan Li , Zhongni Hou , Saiping Guan , Xiaolong Jin , Weihua Peng , Long Bai , Yajuan Lyu , Wei Li , Jiafeng Guo , Xueqi Cheng

Knowledge Graphs (KGs) represent relationships between entities in a graph structure and have been widely studied as promising tools for realizing recommendations that consider the accurate content information of items. However, traditional…

Information Retrieval · Computer Science 2024-12-18 Keigo Sakurai , Ren Togo , Takahiro Ogawa , Miki Haseyama

Large Language Models (LLMs) have shown useful applications in a variety of tasks, including data wrangling. In this paper, we investigate the use of an off-the-shelf LLM for schema matching. Our objective is to identify semantic…

Databases · Computer Science 2024-07-17 Marcel Parciak , Brecht Vandevoort , Frank Neven , Liesbet M. Peeters , Stijn Vansummeren

The proposed research aims to develop an innovative semantic query processing system that enables users to obtain comprehensive information about research works produced by Computer Science (CS) researchers at the Australian National…

Information Retrieval · Computer Science 2026-03-05 Runsong Jia , Bowen Zhang , Sergio J. Rodríguez Méndez , Pouya G. Omran