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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

Query expansion is a well known method to improve the performance of information retrieval systems. In this work we have tested different approaches to extract the candidate query terms from the top ranked documents returned by the…

Information Retrieval · Computer Science 2008-12-18 José R. Pérez-Agüera , Lourdes Araujo

In this paper, we propose an alternative to deep neural networks for semantic information retrieval for the case of long documents. This new approach exploiting clustering techniques to take into account the meaning of words in Information…

Information Retrieval · Computer Science 2025-07-29 Paul Mbathe Mekontchou , Armel Fotsoh , Bernabe Batchakui , Eddy Ella

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

Query expansion is an effective approach for mitigating vocabulary mismatch between queries and documents in information retrieval. One recent line of research uses language models to generate query-related contexts for expansion. Along…

Computation and Language · Computer Science 2022-10-14 Linqing Liu , Minghan Li , Jimmy Lin , Sebastian Riedel , Pontus Stenetorp

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

In this paper, we study machine reading comprehension (MRC) on long texts, where a model takes as inputs a lengthy document and a question and then extracts a text span from the document as an answer. State-of-the-art models tend to use a…

Computation and Language · Computer Science 2020-05-20 Hongyu Gong , Yelong Shen , Dian Yu , Jianshu Chen , Dong Yu

The emerging citation-based QA systems are gaining more attention especially in generative AI search applications. The importance of extracted knowledge provided to these systems is vital from both accuracy (completeness of information) and…

Text clustering holds significant value across various domains due to its ability to identify patterns and group related information. Current approaches which rely heavily on a computed similarity measure between documents are often limited…

Information Retrieval · Computer Science 2025-04-09 Laurence Hirsch , Robin Hirsch , Bayode Ogunleye

Long-document topic segmentation plays an important role in information retrieval and document understanding, yet existing methods still show clear shortcomings in ultra-long text settings. Traditional discriminative models are constrained…

Computation and Language · Computer Science 2026-03-02 Kaifeng Wu , Junyan Wu , Qiang Liu , Jiarui Zhang , Wen Xu

Retrieval-augmented generation (RAG) methods can enhance the performance of LLMs by incorporating retrieved knowledge chunks into the generation process. In general, the retrieval and generation steps usually have different requirements for…

Information Retrieval · Computer Science 2025-04-16 Peiru Yang , Xintian Li , Zhiyang Hu , Jiapeng Wang , Jinhua Yin , Huili Wang , Lizhi He , Shuai Yang , Shangguang Wang , Yongfeng Huang , Tao Qi

Large language models augmented with task-relevant documents have demonstrated impressive performance on knowledge-intensive tasks. However, regarding how to obtain effective documents, the existing methods are mainly divided into two…

Computation and Language · Computer Science 2023-10-10 Zhangyin Feng , Xiaocheng Feng , Dezhi Zhao , Maojin Yang , Bing Qin

Prompt compression methods enhance the efficiency of Large Language Models (LLMs) and minimize the cost by reducing the length of input context. The goal of prompt compression is to shorten the LLM prompt while maintaining a high generation…

Computation and Language · Computer Science 2025-08-25 Tinghui Zhang , Yifan Wang , Daisy Zhe Wang

Retrieval-Augmented Generation (RAG) enhances the performance of Large Language Models (LLMs) by incorporating external knowledge. However, LLMs still encounter challenges in effectively utilizing the knowledge from retrieved documents,…

Computation and Language · Computer Science 2025-02-26 Mingyan Wu , Zhenghao Liu , Yukun Yan , Xinze Li , Shi Yu , Zheni Zeng , Yu Gu , Ge Yu

We present an end-to-end differentiable training method for retrieval-augmented open-domain question answering systems that combine information from multiple retrieved documents when generating answers. We model retrieval decisions as…

Computation and Language · Computer Science 2021-12-07 Devendra Singh Sachan , Siva Reddy , William Hamilton , Chris Dyer , Dani Yogatama

Generating multiple-choice questions (MCQs) with difficulty estimation remains challenging in automated MCQ-generation systems used in adaptive, AI-assisted education. This study proposes a novel methodology for generating MCQs with…

Computation and Language · Computer Science 2026-04-14 Mehmet Can Şakiroğlu , H. Altay Güvenir , Kamer Kaya

Most Reading Comprehension methods limit themselves to queries which can be answered using a single sentence, paragraph, or document. Enabling models to combine disjoint pieces of textual evidence would extend the scope of machine…

Computation and Language · Computer Science 2018-06-12 Johannes Welbl , Pontus Stenetorp , Sebastian Riedel

One of the first steps in many text-based social science studies is to retrieve documents that are relevant for the analysis from large corpora of otherwise irrelevant documents. The conventional approach in social science to address this…

Information Retrieval · Computer Science 2022-05-04 Sandra Wankmüller

Retrieval-Augmented Generation (RAG) systems have revolutionized information retrieval and question answering, but traditional text-based chunking methods struggle with complex document structures, multi-page tables, embedded figures, and…

Machine Learning · Computer Science 2025-07-15 Vishesh Tripathi , Tanmay Odapally , Indraneel Das , Uday Allu , Biddwan Ahmed

The production of microchips is a complex and thus well documented process. Therefore, available textual data about the production can be overwhelming in terms of quantity. This affects the visibility and retrieval of a certain piece of…

Information Retrieval · Computer Science 2021-05-12 H. Abu-Rasheed , C. Weber , J. Zenkert , P. Czerner , R. Krumm , M. Fathi