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Rapid growth of documents, web pages, and other types of text content is a huge challenge for the modern content management systems. One of the problems in the areas of information storage and retrieval is the lacking of semantic data.…

Databases · Computer Science 2015-02-23 Mona Dadjoo , Esmaeil Kheirkhah

Modern information systems are changing the idea of "data processing" to the idea of "concept processing", meaning that instead of processing words, such systems process semantic concepts which carry meaning and share contexts with other…

Computation and Language · Computer Science 2018-11-09 Roger Granada , Renata Vieira , Cassia Trojahn , Nathalie Aussenac-Gilles

Despite their remarkable capabilities, large language models (LLMs) often produce responses containing factual inaccuracies due to their sole reliance on the parametric knowledge they encapsulate. Retrieval-Augmented Generation (RAG), an ad…

Computation and Language · Computer Science 2023-10-19 Akari Asai , Zeqiu Wu , Yizhong Wang , Avirup Sil , Hannaneh Hajishirzi

In the rapidly evolving field of data science, efficiently navigating the expansive body of academic literature is crucial for informed decision-making and innovation. This paper presents an enhanced Retrieval-Augmented Generation (RAG)…

Information Retrieval · Computer Science 2025-05-15 Ahmet Yasin Aytar , Kemal Kilic , Kamer Kaya

Retrieval-augmented generation (RAG) integrates large language models ( LLM s) with retrievers to access external knowledge, improving the factuality of LLM generation in knowledge-grounded tasks. To optimize the RAG performance, most…

Information Retrieval · Computer Science 2025-05-07 Zhengliang Shi , Lingyong Yan , Weiwei Sun , Yue Feng , Pengjie Ren , Xinyu Ma , Shuaiqiang Wang , Dawei Yin , Maarten de Rijke , Zhaochun Ren

Retrieval-Augmented Generation (RAG) is a technique that enhances the capabilities of large language models (LLMs) by incorporating external knowledge sources. This method addresses common LLM limitations, including outdated information and…

Computation and Language · Computer Science 2024-07-16 Yuanjie Lyu , Zhiyu Li , Simin Niu , Feiyu Xiong , Bo Tang , Wenjin Wang , Hao Wu , Huanyong Liu , Tong Xu , Enhong Chen

Extracting relevant and structured knowledge from large, complex technical documents within the Reliability and Maintainability (RAM) domain is labor-intensive and prone to errors. Our work addresses this challenge by presenting OntoKGen, a…

Artificial Intelligence · Computer Science 2024-12-11 Mohammad Sadeq Abolhasani , Rong Pan

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm to enhance large language models (LLMs) by conditioning generation on external evidence retrieved at inference time. While RAG addresses critical limitations of…

Information Retrieval · Computer Science 2025-06-03 Chaitanya Sharma

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

Retrieval-Augmented Generation (RAG) has been shown to enhance the factual accuracy of Large Language Models (LLMs), but existing methods often suffer from limited reasoning capabilities in effectively using the retrieved evidence,…

Computation and Language · Computer Science 2024-10-03 Shayekh Bin Islam , Md Asib Rahman , K S M Tozammel Hossain , Enamul Hoque , Shafiq Joty , Md Rizwan Parvez

Ontologies are essential for structuring domain knowledge, improving accessibility, sharing, and reuse. However, traditional ontology construction relies on manual annotation and conventional natural language processing (NLP) techniques,…

Artificial Intelligence · Computer Science 2026-02-03 Xuan Liu , Ziyu Li , Mu He , Ziyang Ma , Xiaoxu Wu , Gizem Yilmaz , Yiyuan Xia , Bingbing Li , He Tan , Jerry Ying Hsi Fuh , Wen Feng Lu , Anders E. W. Jarfors , Per Jansson

Retrieval-augmented generation (RAG) has emerged as a pivotal method for expanding the knowledge of large language models. To handle complex queries more effectively, researchers developed Adaptive-RAG (A-RAG) to enhance the generated…

Artificial Intelligence · Computer Science 2025-05-27 Jie Ou , Jinyu Guo , Shuaihong Jiang , Zhaokun Wang , Libo Qin , Shunyu Yao , Wenhong Tian

Ontologies have been known for their semantic representation of knowledge. ontologies cannot automatically evolve to reflect updates that occur in respective domains. To address this limitation, researchers have called for automatic…

Artificial Intelligence · Computer Science 2022-01-19 Samaa Elnagar , Victoria Yoon , Manoj A. Thomas

Retrieval-Augmented Generation (RAG) has become a foundational paradigm for equipping large language models (LLMs) with external knowledge, playing a critical role in information retrieval and knowledge-intensive applications. However,…

Computation and Language · Computer Science 2025-06-10 Weihang Su , Qingyao Ai , Jingtao Zhan , Qian Dong , Yiqun Liu

Retrieval augmented generation (RAG) enhances the accuracy and reliability of generative AI models by sourcing factual information from external databases, which is extensively employed in document-grounded question-answering (QA) tasks.…

Computation and Language · Computer Science 2024-07-29 Yuan Pu , Zhuolun He , Tairu Qiu , Haoyuan Wu , Bei Yu

Retrieval augmentation, which enhances downstream models by a knowledge retriever and an external corpus instead of by merely increasing the number of model parameters, has been successfully applied to many natural language processing (NLP)…

Information Retrieval · Computer Science 2023-09-18 Chenyu Zhao , Yunjiang Jiang , Yiming Qiu , Han Zhang , Wen-Yun Yang

Retrieval-augmented generation (RAG) systems are increasingly used to analyze complex policy documents, but achieving sufficient reliability for expert usage remains challenging in domains characterized by dense legal language and evolving,…

Computation and Language · Computer Science 2026-03-26 Saahil Mathur , Ryan David Rittner , Vedant Ajit Thakur , Daniel Stuart Schiff , Tunazzina Islam

Retrieving and extracting knowledge from extensive research documents and large databases presents significant challenges for researchers, students, and professionals in today's information-rich era. Existing retrieval systems, which rely…

Information Retrieval · Computer Science 2025-02-06 Mohammed-Khalil Ghali , Abdelrahman Farrag , Daehan Won , Yu Jin

Ontology development methodologies emphasise knowledge gathering from domain experts and documentary resources, and knowledge representation using an ontology language such as OWL or FOL. However, working ontologists are often surprised by…

Artificial Intelligence · Computer Science 2023-01-11 Fabian Neuhaus , Janna Hastings

Retrieval-Augmented Generation (RAG) systems combine Large Language Models (LLMs) with external knowledge, and their performance depends heavily on how that knowledge is represented. This study investigates how different Knowledge Graph…

Information Retrieval · Computer Science 2025-11-11 Tiago da Cruz , Bernardo Tavares , Francisco Belo