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Retrieval-Augmented Generation (RAG) systems often struggle with imperfect retrieval, as traditional retrievers focus on lexical or semantic similarity rather than logical relevance. To address this, we propose \textbf{HopRAG}, a novel RAG…

信息检索 · 计算机科学 2025-05-27 Hao Liu , Zhengren Wang , Xi Chen , Zhiyu Li , Feiyu Xiong , Qinhan Yu , Wentao Zhang

Multi-hop question answering is a challenging task with distinct industrial relevance, and Retrieval-Augmented Generation (RAG) methods based on large language models (LLMs) have become a popular approach to tackle this task. Owing to the…

计算与语言 · 计算机科学 2025-01-31 Zhouyu Jiang , Mengshu Sun , Lei Liang , Zhiqiang Zhang

Multi-hop question answering (QA) requires reasoning across multiple documents, yet existing retrieval-augmented generation (RAG) approaches address this either through graph-based methods requiring additional online processing or iterative…

计算与语言 · 计算机科学 2026-03-18 Zhenghua Bao , Yi Shi

Multi-hop Question Answering (QA) necessitates complex reasoning by integrating multiple pieces of information to resolve intricate questions. However, existing QA systems encounter challenges such as outdated information, context window…

计算与语言 · 计算机科学 2024-08-23 Xiaoming Zhang , Ming Wang , Xiaocui Yang , Daling Wang , Shi Feng , Yifei Zhang

Retrieval-augmented generation (RAG) enhances large language models with external knowledge, and tree-based RAG organizes documents into hierarchical indexes to support queries at multiple granularities. However, existing Tree-RAG methods…

机器学习 · 计算机科学 2026-05-04 Ziwen Zhao , Menglin Yang

Multi-Hop Question Answering (MHQA) tasks permeate real-world applications, posing challenges in orchestrating multi-step reasoning across diverse knowledge domains. While existing approaches have been improved with iterative retrieval,…

机器学习 · 计算机科学 2025-10-06 Rong Cheng , Jinyi Liu , Yan Zheng , Fei Ni , Jiazhen Du , Hangyu Mao , Fuzheng Zhang , Bo Wang , Jianye Hao

Recently, Retrieval Augmented Generation (RAG) has shifted focus to multi-retrieval approaches to tackle complex tasks such as multi-hop question answering. However, these systems struggle to decide when to stop searching once enough…

信息检索 · 计算机科学 2026-04-23 Gabriel Iturra-Bocaz , Petra Galuscakova

Retrieval-Augmented Generation (RAG) has become a standard approach for knowledge-intensive question answering, but existing systems remain brittle on multi-hop questions, where solving the task requires chaining multiple retrieval and…

Retrieval-Augmented Generation (RAG) systems rely critically on the retriever module to surface relevant context for large language models. Although numerous retrievers have recently been proposed, each built on different ranking principles…

Iterative retrieval-augmented generation (iRAG) models offer an effective approach for multi-hop question answering (QA). However, their retrieval process faces two key challenges: (1) it can be disrupted by irrelevant documents or…

计算与语言 · 计算机科学 2025-02-26 Jinyuan Fang , Zaiqiao Meng , Craig Macdonald

This research introduces ScoreRAG, an approach to enhance the quality of automated news generation. Despite advancements in Natural Language Processing and large language models, current news generation methods often struggle with…

计算与语言 · 计算机科学 2025-06-05 Pei-Yun Lin , Yen-lung Tsai

The rapid evolution of Retrieval-Augmented Generation (RAG) toward multimodal, high-stakes enterprise applications has outpaced the development of domain specific evaluation benchmarks. Existing datasets often rely on general-domain corpora…

人工智能 · 计算机科学 2026-01-23 Chandan Kumar Sahu , Premith Kumar Chilukuri , Matthew Hetrich

As an effective method to boost the performance of Large Language Models (LLMs) on the question answering (QA) task, Retrieval-Augmented Generation (RAG), which queries highly relevant information from external complex documents, has…

信息检索 · 计算机科学 2025-12-04 Shu Wang , Yingli Zhou , Yixiang Fang

Retrieval-Augmented Generation (RAG) has demonstrated significant effectiveness in enhancing large language models (LLMs) for complex multi-hop question answering (QA). For multi-hop QA tasks, current iterative approaches predominantly rely…

计算与语言 · 计算机科学 2026-01-19 Yuling Shi , Maolin Sun , Zijun Liu , Mo Yang , Yixiong Fang , Tianran Sun , Xiaodong Gu

Reinforcement learning has recently shown promise in improving retrieval-augmented generation (RAG). Despite these advances, its effectiveness in multi-hop question answering (QA) remains limited by two fundamental limitations: (i) global…

计算与语言 · 计算机科学 2026-03-17 Jinchang Luo , Mingquan Cheng , Fan Wan , Ni Li , Xiaoling Xia , Shuangshuang Tian , Tingcheng Bian , Haiwei Wang , Haohuan Fu , Yan Tao

Retrieval-Augmented Generation (RAG) has demonstrated considerable effectiveness in open-domain question answering. However, when applied to heterogeneous documents, comprising both textual and tabular components, existing RAG approaches…

计算与语言 · 计算机科学 2025-10-01 Xiaohan Yu , Pu Jian , Chong Chen

Retrieval-Augmented Generation (RAG) enables Large Language Models (LLMs) to extend their existing knowledge by dynamically incorporating external information. However, practical deployment is fundamentally constrained by the LLM's finite…

信息检索 · 计算机科学 2026-03-24 Jiarui Guo , Yuemeng Xu , Zongwei Lv , Yangyujia Wang , Xiaolin Wang , Kan Liu , Tao Lan , Lin Qu , Tong Yang

In recent years, large language models (LLMs) have made remarkable achievements in various domains. However, the untimeliness and cost of knowledge updates coupled with hallucination issues of LLMs have curtailed their applications in…

机器学习 · 计算机科学 2024-05-31 Chunjing Gan , Dan Yang , Binbin Hu , Hanxiao Zhang , Siyuan Li , Ziqi Liu , Yue Shen , Lin Ju , Zhiqiang Zhang , Jinjie Gu , Lei Liang , Jun Zhou

Retrieval-augmented generation (RAG) has become a fundamental paradigm for addressing the challenges faced by large language models in handling real-time information and domain-specific problems. Traditional RAG systems primarily rely on…

计算与语言 · 计算机科学 2025-09-11 YiHan Jiao , ZheHao Tan , Dan Yang , DuoLin Sun , Jie Feng , Yue Shen , Jian Wang , Peng Wei

Retrieval-Augmented Generation (RAG) has demonstrated strong effectiveness in knowledge-intensive tasks by grounding language generation in external evidence. Despite its success, many existing RAG systems are built based on a…

计算与语言 · 计算机科学 2026-04-27 Lichang Song , Ting Long , Yi Chang
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