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We introduce a novel graph-based Retrieval-Augmented Generation (RAG) framework specifically designed for the medical domain, called \textbf{MedGraphRAG}, aimed at enhancing Large Language Model (LLM) capabilities for generating…

Computer Vision and Pattern Recognition · Computer Science 2024-10-17 Junde Wu , Jiayuan Zhu , Yunli Qi , Jingkun Chen , Min Xu , Filippo Menolascina , Vicente Grau

Cyber Threat Intelligence (CTI) reports document observations of cyber threats, synthesizing evidence about adversaries' actions and intent into actionable knowledge that informs detection, response, and defense planning. However, the…

Cryptography and Security · Computer Science 2026-03-04 Haokai Ma , Javier Yong , Yunshan Ma , Kuei Chen , Anis Yusof , Zhenkai Liang , Ee-Chien Chang

Nowadays, Knowledge graphs (KGs) have been playing a pivotal role in AI-related applications. Despite the large sizes, existing KGs are far from complete and comprehensive. In order to continuously enrich KGs, automatic knowledge…

Computation and Language · Computer Science 2021-11-12 Zhao Zhang , Fuzhen Zhuang , Hengshu Zhu , Chao Li , Hui Xiong , Qing He , Yongjun Xu

Cross-border insider threats pose a critical challenge to government financial schemes, particularly when dealing with distributed, privacy-sensitive data across multiple jurisdictions. Existing approaches face fundamental limitations: they…

Cryptography and Security · Computer Science 2026-02-19 Srikumar Nayak , James Walmesley

Knowledge Graphs (KG) provide us with a structured, flexible, transparent, cross-system, and collaborative way of organizing our knowledge and data across various domains in society and industrial as well as scientific disciplines. KGs…

Cyber-defense systems are being developed to automatically ingest Cyber Threat Intelligence (CTI) that contains semi-structured data and/or text to populate knowledge graphs. A potential risk is that fake CTI can be generated and spread…

Cryptography and Security · Computer Science 2021-06-22 Priyanka Ranade , Aritran Piplai , Sudip Mittal , Anupam Joshi , Tim Finin

This paper presents $\mu\text{KG}$, an open-source Python library for representation learning over knowledge graphs. $\mu\text{KG}$ supports joint representation learning over multi-source knowledge graphs (and also a single knowledge…

Computation and Language · Computer Science 2022-07-29 Xindi Luo , Zequn Sun , Wei Hu

Knowledge graph completion (KGC) focuses on identifying missing triples in a knowledge graph (KG) , which is crucial for many downstream applications. Given the rapid development of large language models (LLMs), some LLM-based methods are…

Computation and Language · Computer Science 2025-01-06 Rui Yang , Jiahao Zhu , Jianping Man , Hongze Liu , Li Fang , Yi Zhou

Electronic Health Records (EHRs) and routine documentation practices play a vital role in patients' daily care, providing a holistic record of health, diagnoses, and treatment. However, complex and verbose EHR narratives overload healthcare…

Computation and Language · Computer Science 2025-02-26 Yanjun Gao , Ruizhe Li , Emma Croxford , John Caskey , Brian W Patterson , Matthew Churpek , Timothy Miller , Dmitriy Dligach , Majid Afshar

Cyber Threat Intelligence (CTI) summarization involves generating concise and accurate highlights from web intelligence data, which is critical for providing decision-makers with actionable insights to swiftly detect and respond to cyber…

Computation and Language · Computer Science 2025-07-01 Wei Peng , Junmei Ding , Wei Wang , Lei Cui , Wei Cai , Zhiyu Hao , Xiaochun Yun

With the rapid advancement of Large Language Models (LLMs), LLM-based approaches have demonstrated strong problem-solving capabilities across various domains. However, in automatic programming, a single LLM is typically limited to…

Software Engineering · Computer Science 2025-04-22 Zixiao Zhao , Jing Sun , Zhe Hou , Zhiyuan Wei , Cheng-Hao Cai , Miao Qiao , Jin Song Dong

Legal decision-making process requires the availability of comprehensive and detailed legislative background knowledge and up-to-date information on legal cases and related sentences/decisions. Legal Knowledge Graphs (KGs) would be a…

Artificial Intelligence · Computer Science 2025-08-11 Claudia dAmato , Giuseppe Rubini , Francesco Didio , Donato Francioso , Fatima Zahra Amara , Nicola Fanizzi

Retrieval-augmented generation (RAG) systems have been widely adopted in contemporary large language models (LLMs) due to their ability to improve generation quality while reducing the required input context length. In this work, we focus…

Computation and Language · Computer Science 2026-04-07 Tianyi Zhang , Andreas Marfurt

Thanks to the increasing availability of drug-drug interactions (DDI) datasets and large biomedical knowledge graphs (KGs), accurate detection of adverse DDI using machine learning models becomes possible. However, it remains largely an…

Machine Learning · Computer Science 2021-05-10 Yue Yu , Kexin Huang , Chao Zhang , Lucas M. Glass , Jimeng Sun , Cao Xiao

The rapid expansion of medical literature presents growing challenges for structuring and integrating domain knowledge at scale. Knowledge Graphs (KGs) offer a promising solution by enabling efficient retrieval, automated reasoning, and…

Computation and Language · Computer Science 2025-08-20 Duzhen Zhang , Zixiao Wang , Zhong-Zhi Li , Yahan Yu , Shuncheng Jia , Jiahua Dong , Haotian Xu , Xing Wu , Yingying Zhang , Tielin Zhang , Jie Yang , Xiuying Chen , Le Song

To address the increasing complexity and frequency of cybersecurity incidents emphasized by the recent cybersecurity threat reports with over 10 billion instances, cyber threat intelligence (CTI) plays a critical role in the modern…

Cryptography and Security · Computer Science 2024-06-04 Hangyuan Ji , Jian Yang , Linzheng Chai , Chaoren Wei , Liqun Yang , Yunlong Duan , Yunli Wang , Tianzhen Sun , Hongcheng Guo , Tongliang Li , Changyu Ren , Zhoujun Li

Knowledge graph question answering (KGQA) presents significant challenges due to the structural and semantic variations across input graphs. Existing works rely on Large Language Model (LLM) agents for graph traversal and retrieval; an…

Computation and Language · Computer Science 2025-07-08 Costas Mavromatis , Soji Adeshina , Vassilis N. Ioannidis , Zhen Han , Qi Zhu , Ian Robinson , Bryan Thompson , Huzefa Rangwala , George Karypis

Large Language Models (LLMs) possess human-level cognitive and decision-making capabilities, making them a key technology for 6G. However, applying LLMs to the communication domain faces three major challenges: 1) Inadequate communication…

Information Theory · Computer Science 2025-02-27 Feibo Jiang , Wanyun Zhu , Li Dong , Kezhi Wang , Kun Yang , Cunhua Pan , Octavia A. Dobre

Verifying the credibility of Cyber Threat Intelligence (CTI) is essential for reliable cybersecurity defense. However, traditional approaches typically treat this task as a static classification problem, relying on handcrafted features or…

Cryptography and Security · Computer Science 2025-07-16 Fengxiao Tang , Huan Li , Ming Zhao , Zongzong Wu , Shisong Peng , Tao Yin

Inferring new facts from existing knowledge graphs (KG) with explainable reasoning processes is a significant problem and has received much attention recently. However, few studies have focused on relation types unseen in the original KG,…

Machine Learning · Computer Science 2019-06-14 Zhengxiao Du , Chang Zhou , Ming Ding , Hongxia Yang , Jie Tang