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Retrieval-Augmented Generation (RAG) systems commonly use chunking strategies for retrieval, which enhance large language models (LLMs) by enabling them to access external knowledge, ensuring that the retrieved information is up-to-date and…

Computation and Language · Computer Science 2025-07-15 Hai Toan Nguyen , Tien Dat Nguyen , Viet Ha Nguyen

The effectiveness of Retrieval-Augmented Generation (RAG) is highly dependent on how documents are chunked, that is, segmented into smaller units for indexing and retrieval. Yet, commonly used "one-size-fits-all" approaches often fail to…

Computation and Language · Computer Science 2026-03-27 Paulo Roberto de Moura Júnior , Jean Lelong , Annabelle Blangero

Retrieval-augmented generation (RAG) has strong potential for producing accurate and factual outputs by combining language models (LMs) with evidence retrieved from large text corpora. However, current pipelines are limited by static…

Information Retrieval · Computer Science 2026-02-27 Xuechen Zhang , Koustava Goswami , Samet Oymak , Jiasi Chen , Nedim Lipka

The effectiveness upper bound of retrieval-augmented generation (RAG) is fundamentally constrained by the semantic integrity and information granularity of text chunks in its knowledge base. To address these challenges, this paper proposes…

Computation and Language · Computer Science 2026-03-13 Jihao Zhao , Daixuan Li , Pengfei Li , Shuaishuai Zu , Biao Qin , Hongyan Liu

Retrieval-Augmented Generation (RAG) enhances the response capabilities of language models by integrating external knowledge sources. However, document chunking as an important part of RAG system often lacks effective evaluation tools. This…

Computation and Language · Computer Science 2025-10-10 Wensheng Lu , Keyu Chen , Ruizhi Qiao , Xing Sun

Retrieval-Augmented Generation (RAG), while serving as a viable complement to large language models (LLMs), often overlooks the crucial aspect of text chunking within its pipeline. This paper initially introduces a dual-metric evaluation…

Computation and Language · Computer Science 2025-05-27 Jihao Zhao , Zhiyuan Ji , Zhaoxin Fan , Hanyu Wang , Simin Niu , Bo Tang , Feiyu Xiong , Zhiyu Li

Standard Retrieval-Augmented Generation (RAG) chunking methods often create excessive redundancy, increasing storage costs and slowing retrieval. This study explores chunk filtering strategies, such as semantic, topic-based, and…

Computation and Language · Computer Science 2026-04-28 Daria Berdyugina , Anaëlle Cohen , Yohann Rioual

Retrieval-Augmented Generation (RAG) prevails in Large Language Models. It mainly consists of retrieval and generation. The retrieval modules (a.k.a. retrievers) aim to find useful information used to facilitate the generation modules…

Information Retrieval · Computer Science 2025-02-18 Xinping Zhao , Yan Zhong , Zetian Sun , Xinshuo Hu , Zhenyu Liu , Dongfang Li , Baotian Hu , Min Zhang

We study how document chunking choices impact the reliability of Retrieval-Augmented Generation (RAG) systems in industry. While practice often relies on heuristics, our end-to-end evaluation on Natural Questions systematically varies…

Computation and Language · Computer Science 2026-01-21 Sofia Bennani , Charles Moslonka

Retrieval-Augmented Generation (RAG) has become a widely adopted paradigm for enhancing the reliability of large language models (LLMs). However, RAG systems are sensitive to retrieval strategies that rely on text chunking to construct…

Information Retrieval · Computer Science 2026-03-31 Sun Xu , Tongkai Xu , Baiheng Xie , Li Huang , Qiang Gao , Kunpeng Zhang

Retrieval-Augmented Generation (RAG) systems critically depend on effective document chunking strategies to balance retrieval quality, latency, and operational cost. Traditional chunking approaches, such as fixed-size, rule-based, or fully…

Information Retrieval · Computer Science 2026-04-08 Uday Allu , Sonu Kedia , Tanmay Odapally , Biddwan Ahmed

While Retrieval-Augmented Generation (RAG) has emerged as a promising paradigm for boosting large language models (LLMs) in knowledge-intensive tasks, it often overlooks the crucial aspect of text chunking within its workflow. This paper…

Computation and Language · Computer Science 2025-05-22 Jihao Zhao , Zhiyuan Ji , Yuchen Feng , Pengnian Qi , Simin Niu , Bo Tang , Feiyu Xiong , Zhiyu Li

Retrieval-Augmented Generation (RAG) systems depend critically on document chunking quality for retrieving relevant context. Fixed chunking segments documents into uniform units irrespective of semantics or user intent, producing a…

Computation and Language · Computer Science 2026-05-27 Mudit Rastogi

Retrieval-Augmented Generation (RAG) systems using large language models (LLMs) often generate inaccurate responses due to the retrieval of irrelevant or loosely related information. Existing methods, which operate at the document level,…

Computation and Language · Computer Science 2025-04-24 Ishneet Sukhvinder Singh , Ritvik Aggarwal , Ibrahim Allahverdiyev , Muhammad Taha , Aslihan Akalin , Kevin Zhu , Sean O'Brien

Retrieval-Augmented Generation (RAG) encounters efficiency challenges when scaling to massive knowledge bases while preserving contextual relevance. We propose Hash-RAG, a framework that integrates deep hashing techniques with systematic…

Information Retrieval · Computer Science 2025-06-04 Jinyu Guo , Xunlei Chen , Qiyang Xia , Zhaokun Wang , Jie Ou , Libo Qin , Shunyu Yao , Wenhong Tian

Retrieval-Augmented Generation (RAG) has proven effective in open-domain question answering. However, the chunking process, which is essential to this pipeline, often receives insufficient attention relative to retrieval and synthesis…

Computation and Language · Computer Science 2025-01-20 Zuhong Liu , Charles-Elie Simon , Fabien Caspani

Retrieval-Augmented Generation (RAG) has emerged as a framework to address the constraints of Large Language Models (LLMs). Yet, its effectiveness fundamentally hinges on document chunking - an often-overlooked determinant of its quality.…

Information Retrieval · Computer Science 2026-03-26 Samuel Taiwo , Mohd Amaluddin Yusoff

Chunking is a crucial preprocessing step in retrieval-augmented generation (RAG) systems, significantly impacting retrieval effectiveness across diverse datasets. In this study, we systematically evaluate fixed-size chunking strategies and…

Information Retrieval · Computer Science 2025-05-30 Sinchana Ramakanth Bhat , Max Rudat , Jannis Spiekermann , Nicolas Flores-Herr

Recent advances in Retrieval-Augmented Generation (RAG) systems have popularized semantic chunking, which aims to improve retrieval performance by dividing documents into semantically coherent segments. Despite its growing adoption, the…

Computation and Language · Computer Science 2024-10-18 Renyi Qu , Ruixuan Tu , Forrest Bao

Chunking information is a key step in Retrieval Augmented Generation (RAG). Current research primarily centers on paragraph-level chunking. This approach treats all texts as equal and neglects the information contained in the structure of…

Computation and Language · Computer Science 2024-03-19 Antonio Jimeno Yepes , Yao You , Jan Milczek , Sebastian Laverde , Renyu Li
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