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Retrieval augmented generation (RAG) has shown great power in improving Large Language Models (LLMs). However, most existing RAG-based LLMs are dedicated to retrieving single modality information, mainly text; while for many real-world…

Computation and Language · Computer Science 2025-06-09 Saptarshi Sengupta , Shuhua Yang , Paul Kwong Yu , Fali Wang , Suhang Wang

The rapid evolution of communication technologies has led to an explosion of standards, rendering traditional expert-dependent consultation methods inefficient and slow. To address this challenge, we propose \textbf{KG2QA}, a question…

Computation and Language · Computer Science 2025-10-16 Zhongze Luo , Weixuan Wan , Tianya Zhang , Dan Wang , Xiaoying Tang

Retrieval-augmented generation (RAG) is a popular technique for using large language models (LLMs) to build customer-support, question-answering solutions. In this paper, we share our team's practical experience building and maintaining…

Information Retrieval · Computer Science 2024-10-18 Sarah Packowski , Inge Halilovic , Jenifer Schlotfeldt , Trish Smith

Retrieval-Augmented Generation (RAG) systems have shown promise in enhancing the performance of Large Language Models (LLMs). However, these systems face challenges in effectively integrating external knowledge with the LLM's internal…

This paper investigates the impact of domain-specific model fine-tuning and of reasoning mechanisms on the performance of question-answering (Q&A) systems powered by large language models (LLMs) and Retrieval-Augmented Generation (RAG).…

Artificial Intelligence · Computer Science 2024-04-23 Zooey Nguyen , Anthony Annunziata , Vinh Luong , Sang Dinh , Quynh Le , Anh Hai Ha , Chanh Le , Hong An Phan , Shruti Raghavan , Christopher Nguyen

Review-based Product Question Answering (PQA) allows e-commerce platforms to automatically address customer queries by leveraging insights from user reviews. However, existing PQA systems generate answers with only a single perspective,…

Computation and Language · Computer Science 2025-06-05 An Quang Tang , Xiuzhen Zhang , Minh Ngoc Dinh , Zhuang Li

This study introduces Knowledge Augmented Question Generation (KAQG), an educational assessment framework that integrates Item Response Theory, abbreviated as IRT, Bloom's Taxonomy, and knowledge graphs into a multi-agent…

Information Retrieval · Computer Science 2025-09-30 Ching Han Chen , Ming Fang Shiu

Competency question (CQ) formulation is central to several ontology development and evaluation methodologies. Traditionally, the task of crafting these competency questions heavily relies on the effort of domain experts and knowledge…

Artificial Intelligence · Computer Science 2025-02-13 Xueli Pan , Jacco van Ossenbruggen , Victor de Boer , Zhisheng Huang

A question-answering (QA) system is to search suitable answers within a knowledge base. Current QA systems struggle with queries requiring complex reasoning or real-time knowledge integration. They are often supplemented with retrieval…

Computation and Language · Computer Science 2025-05-21 Sizhe Yuen , Ting Su , Ziyang Wang , Yali Du , Adam J. Sobey

We proposed an end-to-end system design towards utilizing Retrieval Augmented Generation (RAG) to improve the factual accuracy of Large Language Models (LLMs) for domain-specific and time-sensitive queries related to private…

Computation and Language · Computer Science 2024-03-18 Jiarui Li , Ye Yuan , Zehua Zhang

Open-domain question answering (QA) aims to find the answer to a question from a large collection of documents.Though many models for single-document machine comprehension have achieved strong performance, there is still much room for…

Computation and Language · Computer Science 2020-06-11 Mantong Zhou , Zhouxing Shi , Minlie Huang , Xiaoyan Zhu

Retrieval Augmented Generation (RAG) systems are a widespread application of Large Language Models (LLMs) in the industry. While many tools exist empowering developers to build their own systems, measuring their performance locally, with…

Information Retrieval · Computer Science 2024-12-02 Rafael Teixeira de Lima , Shubham Gupta , Cesar Berrospi , Lokesh Mishra , Michele Dolfi , Peter Staar , Panagiotis Vagenas

Large Language Models (LLMs) often struggle with dynamically changing knowledge and handling unknown static information. Retrieval-Augmented Generation (RAG) is employed to tackle these challenges and has a significant impact on improving…

Computation and Language · Computer Science 2025-09-18 Zhen Zhang , Xinyu Wang , Yong Jiang , Zile Qiao , Zhuo Chen , Guangyu Li , Feiteng Mu , Mengting Hu , Pengjun Xie , Fei Huang

Responding to the thousands of student questions on online QA platforms each semester has a considerable human cost, particularly in computing courses with rapidly growing enrollments. To address the challenges of scalable and intelligent…

Machine Learning · Computer Science 2023-12-20 Yann Hicke , Anmol Agarwal , Qianou Ma , Paul Denny

Large-scale language models (LLMs) have achieved remarkable success across various language tasks but suffer from hallucinations and temporal misalignment. To mitigate these shortcomings, Retrieval-augmented generation (RAG) has been…

Computation and Language · Computer Science 2024-04-30 Zhongzhen Huang , Kui Xue , Yongqi Fan , Linjie Mu , Ruoyu Liu , Tong Ruan , Shaoting Zhang , Xiaofan Zhang

Knowledge-based Vision Question Answering (KB-VQA) systems address complex visual-grounded questions with knowledge retrieved from external knowledge bases. The tasks of knowledge retrieval and answer generation tasks both necessitate…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Jiaqi Deng , Kaize Shi , Zonghan Wu , Huan Huo , Dingxian Wang , Guandong Xu

Retrieval-Augmented Generation (RAG) has been introduced to mitigate hallucinations in Multimodal Large Language Models (MLLMs) by incorporating external knowledge into the generation process, and it has become a widely adopted approach for…

Artificial Intelligence · Computer Science 2026-03-17 Zhuohang Jiang , Pangjing Wu , Xu Yuan , Wenqi Fan , Qing Li

Large Language Models (LLMs), although powerful in general domains, often perform poorly on domain-specific tasks such as medical question answering (QA). In addition, LLMs tend to function as "black-boxes", making it challenging to modify…

Computation and Language · Computer Science 2024-08-19 Yucheng Shi , Shaochen Xu , Tianze Yang , Zhengliang Liu , Tianming Liu , Quanzheng Li , Xiang Li , Ninghao Liu

Answering questions over domain-specific graphs requires a tailored approach due to the limited number of relations and the specific nature of the domain. Our approach integrates classic logical programming languages into large language…

Machine Learning · Computer Science 2023-08-24 Navid Madani , Rohini K. Srihari , Kenneth Joseph

Retrieval-Augmented Generation (RAG) offers a promising solution to address various limitations of Large Language Models (LLMs), such as hallucination and difficulties in keeping up with real-time updates. This approach is particularly…

Computation and Language · Computer Science 2024-06-18 Shuting Wang , Jiongnan Liu , Shiren Song , Jiehan Cheng , Yuqi Fu , Peidong Guo , Kun Fang , Yutao Zhu , Zhicheng Dou