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Large Language Models (LLMs) face information overload when handling long contexts, particularly in Retrieval-Augmented Generation (RAG) where extensive supporting documents often introduce redundant content. This issue not only weakens…

计算与语言 · 计算机科学 2025-11-25 Kaize Shi , Xueyao Sun , Xiaohui Tao , Lin Li , Qika Lin , Guandong Xu

Large language models (LLMs) inevitably exhibit hallucinations since the accuracy of generated texts cannot be secured solely by the parametric knowledge they encapsulate. Although retrieval-augmented generation (RAG) is a practicable…

计算与语言 · 计算机科学 2024-10-08 Shi-Qi Yan , Jia-Chen Gu , Yun Zhu , Zhen-Hua Ling

This paper introduces xRAG, an innovative context compression method tailored for retrieval-augmented generation. xRAG reinterprets document embeddings in dense retrieval--traditionally used solely for retrieval--as features from the…

计算与语言 · 计算机科学 2024-12-10 Xin Cheng , Xun Wang , Xingxing Zhang , Tao Ge , Si-Qing Chen , Furu Wei , Huishuai Zhang , Dongyan Zhao

Model compression techniques allow to significantly reduce the computational cost associated with data processing by deep neural networks with only a minor decrease in average accuracy. Simultaneously, reducing the model size may have a…

机器学习 · 计算机科学 2021-09-28 Sebastian Cygert , Andrzej Czyżewski

Abstraction reasoning is a long-standing challenge in artificial intelligence. Recent studies suggest that many of the deep architectures that have triumphed over other domains failed to work well in abstract reasoning. In this paper, we…

人工智能 · 计算机科学 2019-12-03 Kecheng Zheng , Zheng-jun Zha , Wei Wei

Retrieval-Augmented Generation (RAG) has become a widely adopted approach to enhance Large Language Models (LLMs) by incorporating external knowledge and reducing hallucinations. However, noisy or irrelevant documents are often introduced…

计算与语言 · 计算机科学 2026-01-07 Jingyu Liu , Jiaen Lin , Yong Liu

Large Language Models (LLMs) excel in language tasks but are prone to hallucinations and outdated knowledge. Retrieval-Augmented Generation (RAG) mitigates these by grounding LLMs in external knowledge. However, in complex domains involving…

计算与语言 · 计算机科学 2025-08-28 Peiran Zhou , Junnan Zhu , Yichen Shen , Ruoxi Yu

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…

信息检索 · 计算机科学 2026-02-27 Xuechen Zhang , Koustava Goswami , Samet Oymak , Jiasi Chen , Nedim Lipka

Standard LLM-based speech recognition systems typically process utterances in isolation, limiting their ability to leverage conversational context. In this work, we study whether multimodal context from prior turns improves LLM-based ASR…

Dense Retrieval (DR) has achieved state-of-the-art first-stage ranking effectiveness. However, the efficiency of most existing DR models is limited by the large memory cost of storing dense vectors and the time-consuming nearest neighbor…

信息检索 · 计算机科学 2021-10-13 Jingtao Zhan , Jiaxin Mao , Yiqun Liu , Jiafeng Guo , Min Zhang , Shaoping Ma

Retrieval-augmented generation (RAG) has emerged as a pivotal method for expanding the knowledge of large language models. To handle complex queries more effectively, researchers developed Adaptive-RAG (A-RAG) to enhance the generated…

人工智能 · 计算机科学 2025-05-27 Jie Ou , Jinyu Guo , Shuaihong Jiang , Zhaokun Wang , Libo Qin , Shunyu Yao , Wenhong Tian

Large Language Models (LLMs) often experience performance degradation during long-running interactions due to increasing context length, memory saturation, and computational overhead. This paper presents an adaptive context compression…

计算机视觉与模式识别 · 计算机科学 2026-04-01 Payal Fofadiya , Sunil Tiwari

Recent retrieval-augmented models enhance basic methods by building a hierarchical structure over retrieved text chunks through recursive embedding, clustering, and summarization. The most relevant information is then retrieved from both…

计算与语言 · 计算机科学 2024-10-03 Charbel Chucri , Rami Azouz , Joachim Ott

Retrieval-augmented Generation (RAG) extends large language models (LLMs) with external knowledge but faces key challenges: restricted effective context length and redundancy in retrieved documents. Pure compression-based approaches reduce…

计算与语言 · 计算机科学 2025-07-09 Yiqiao Jin , Kartik Sharma , Vineeth Rakesh , Yingtong Dou , Menghai Pan , Mahashweta Das , Srijan Kumar

Retrieval-Augmented Generation (RAG) has become a standard approach for enhancing large language models (LLMs) with external knowledge, mitigating hallucinations, and improving factuality. However, existing systems rely on generating…

计算与语言 · 计算机科学 2026-05-08 Ha Lan N. T , Minh-Anh Nguyen , Dung D. Le

Multimodal large language models (MLLMs) have demonstrated great performance on visual question answering (VQA). When it comes to knowledge-based Visual Question Answering (KB-VQA), MLLMs may lack the specialized domain knowledge needed to…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Weixi Weng , Jieming Zhu , Xiaojun Meng , Hao Zhang , Rui Zhang , Chun Yuan

Retrieval-augmented language models (RALMs) hold promise to produce language understanding systems that are are factual, efficient, and up-to-date. An important desideratum of RALMs, is that retrieved information helps model performance…

计算与语言 · 计算机科学 2024-05-07 Ori Yoran , Tomer Wolfson , Ori Ram , Jonathan Berant

Recent advances in vision-language models have demonstrated remarkable performance across diverse multi-modal tasks, including document question answering that leverages structured visual cues from text, tables, and figures. However, unlike…

计算机视觉与模式识别 · 计算机科学 2026-04-27 Joonmyung Choi , Sanghyeok Lee , Jongha Kim , Sehyung Kim , Dohwan Ko , Jihyung Kil , Hyunwoo J. Kim

Retrieval-augmented generation (RAG) enhances LLMs with external knowledge, yet generation remains vulnerable to retrieval-induced noise and uncertain placement of relevant chunks, often causing hallucinations. We present Ext2Gen, an…

计算与语言 · 计算机科学 2025-11-18 Hwanjun Song , Jeonghwan Choi , Minseok Kim

Recent techniques such as retrieval-augmented generation or chain-of-thought reasoning have led to longer contexts and increased inference costs. Context compression techniques can reduce these costs, but the most effective approaches…

计算与语言 · 计算机科学 2025-10-24 Hippolyte Pilchen , Edouard Grave , Patrick Pérez