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We introduce the \textit{Extract-Refine-Retrieve-Read} (ERRR) framework, a novel approach designed to bridge the pre-retrieval information gap in Retrieval-Augmented Generation (RAG) systems through query optimization tailored to meet the…

Computation and Language · Computer Science 2025-09-22 Youan Cong , Pritom Saha Akash , Cheng Wang , Kevin Chen-Chuan Chang

Question Answering (QA) systems face challenges in handling complex questions that require multi-domain knowledge synthesis. The naive RAG models, although effective in information retrieval, struggle with complex questions that require…

Computation and Language · Computer Science 2024-10-24 Ziyang Chen , Xiaobin Wang , Yong Jiang , Jinzhi Liao , Pengjun Xie , Fei Huang , Xiang Zhao

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by integrating up-to-date external knowledge, yet real-world web environments present unique challenges. These limitations manifest as two key challenges: pervasive…

Information Retrieval · Computer Science 2026-03-24 Yuqin Dai , Shuo Yang , Guoqing Wang , Yong Deng , Zhanwei Zhang , Jun Yin , Pengyu Zeng , Zhenzhe Ying , Changhua Meng , Can Yi , Yuchen Zhou , Weiqiang Wang , Shuai Lu

This paper introduces uRAG--a framework with a unified retrieval engine that serves multiple downstream retrieval-augmented generation (RAG) systems. Each RAG system consumes the retrieval results for a unique purpose, such as open-domain…

Computation and Language · Computer Science 2024-05-02 Alireza Salemi , Hamed Zamani

Retrieval-Augmented Generation (RAG) improves Large Language Models (LLMs) by retrieving supporting documents into the prompt, but existing methods do not explicitly target queries that require fetching multiple documents with substantially…

Considering the limited internal parametric knowledge, retrieval-augmented generation (RAG) has been widely used to extend the knowledge scope of large language models (LLMs). Despite the extensive efforts on RAG research, in existing…

Computation and Language · Computer Science 2024-11-22 Yuhao Wang , Ruiyang Ren , Junyi Li , Wayne Xin Zhao , Jing Liu , Ji-Rong Wen

Large Language Models (LLMs) suffer from hallucinations and outdated knowledge due to their reliance on static training data. Retrieval-Augmented Generation (RAG) mitigates these issues by integrating external dynamic information for…

We designed a Retrieval-Augmented Generation (RAG) system to provide large language models with relevant documents for answering domain-specific questions about Pittsburgh and Carnegie Mellon University (CMU). We extracted over 1,800…

Machine Learning · Computer Science 2024-11-22 Haojia Sun , Yaqi Wang , Shuting Zhang

Retrieval-Augmented Generation (RAG) has recently demonstrated the performance of Large Language Models (LLMs) in the knowledge-intensive tasks such as Question-Answering (QA). RAG expands the query context by incorporating external…

Machine Learning · Computer Science 2024-06-18 Zijian Hei , Weiling Liu , Wenjie Ou , Juyi Qiao , Junming Jiao , Guowen Song , Ting Tian , Yi Lin

Large Language Models (LLMs) have demonstrated impressive capabilities in answering questions, but they lack domain-specific knowledge and are prone to hallucinations. Retrieval Augmented Generation (RAG) is one approach to address these…

Computation and Language · Computer Science 2024-10-30 Monica Riedler , Stefan Langer

Regulatory compliance in the pharmaceutical industry entails navigating through complex and voluminous guidelines, often requiring significant human resources. To address these challenges, our study introduces a chatbot model that utilizes…

Computation and Language · Computer Science 2024-02-07 Jaewoong Kim , Moohong Min

Multimodal Retrieval Augmented Generation (MMRAG) is a powerful approach to question-answering over multimodal documents. A key challenge with evaluating MMRAG is the paucity of high-quality datasets matching the question styles and…

Computation and Language · Computer Science 2024-10-07 Ian Wu , Sravan Jayanthi , Vijay Viswanathan , Simon Rosenberg , Sina Pakazad , Tongshuang Wu , Graham Neubig

Large Language Models (LLMs) have shown versatility in various Natural Language Processing (NLP) tasks, including their potential as effective question-answering systems. However, to provide precise and relevant information in response to…

Computation and Language · Computer Science 2024-09-09 Sriram Veturi , Saurabh Vaichal , Reshma Lal Jagadheesh , Nafis Irtiza Tripto , Nian Yan

Retrieval-Augmented Generation (RAG) utilizes external knowledge to augment Large Language Models' (LLMs) reliability. For flexibility, agentic RAG employs autonomous, multi-round retrieval and reasoning to resolve queries. Although recent…

Information Retrieval · Computer Science 2025-11-10 Chao Zhang , Yuhao Wang , Derong Xu , Haoxin Zhang , Yuanjie Lyu , Yuhao Chen , Shuochen Liu , Tong Xu , Xiangyu Zhao , Yan Gao , Yao Hu , Enhong Chen

Successfully handling context is essential for any dialog understanding task. This context maybe be conversational (relying on previous user queries or system responses), visual (relying on what the user sees, for example, on their screen),…

Multi-hop question answering (QA) necessitates multi-step reasoning and retrieval across interconnected subjects, attributes, and relations. Existing retrieval-augmented generation (RAG) methods struggle to capture these structural…

Computation and Language · Computer Science 2026-02-19 Jimeng Shi , Wei Hu , Runchu Tian , Bowen Jin , Wonbin Kweon , SeongKu Kang , Yunfan Kang , Dingqi Ye , Sizhe Zhou , Shaowen Wang , Jiawei Han

Retrieval-augmented generation (RAG) augments large language models (LLM) by retrieving relevant knowledge, showing promising potential in mitigating LLM hallucinations and enhancing response quality, thereby facilitating the great adoption…

Computation and Language · Computer Science 2024-01-30 Yixuan Tang , Yi Yang

Retrieval-augmented generation (RAG) has emerged as a promising approach to enhance the performance of large language models (LLMs) in knowledge-intensive tasks such as those from medical domain. However, the sensitive nature of the medical…

Computation and Language · Computer Science 2024-11-15 Nghia Trung Ngo , Chien Van Nguyen , Franck Dernoncourt , Thien Huu Nguyen

Conversational query clarification enables users to refine their search queries through interactive dialogue, improving search effectiveness. Traditional approaches rely on text-based clarifying questions, which often fail to capture…

Information Retrieval · Computer Science 2025-02-18 Kimia Ramezan , Alireza Amiri Bavandpour , Yifei Yuan , Clemencia Siro , Mohammad Aliannejadi

Community Question Answering (CQA) platforms can be deemed as important knowledge bases in community, but effectively leveraging historical interactions and domain knowledge in real-time remains a challenge. Existing methods often…

Computation and Language · Computer Science 2025-07-02 Qinwen Chen , Wenbiao Tao , Zhiwei Zhu , Mingfan Xi , Liangzhong Guo , Yuan Wang , Wei Wang , Yunshi Lan