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Retrieval-Augmented Generation (RAG) improves large language models by retrieving external knowledge, often truncated into smaller chunks due to the input context window, which leads to information loss, resulting in response hallucinations…

Computation and Language · Computer Science 2025-11-18 Jie Zhang , Bo Tang , Wanzi Shao , Wenqiang Wei , Jihao Zhao , Jianqing Zhu , Zhiyu li , Wen Xi , Zehao Lin , Feiyu Xiong , Yanchao Tan

Retrieval-augmented generation (RAG) is critical for reducing hallucinations and incorporating external knowledge into Large Language Models (LLMs). However, advanced RAG systems face a trade-off between performance and efficiency.…

Information Retrieval · Computer Science 2025-08-05 Shengbo Gong , Xianfeng Tang , Carl Yang , Wei jin

Meta-learning of numerical algorithms for a given task consists of the data-driven identification and adaptation of an algorithmic structure and the associated hyperparameters. To limit the complexity of the meta-learning problem, neural…

Machine Learning · Computer Science 2023-07-07 Danimir T. Doncevic , Alexander Mitsos , Yue Guo , Qianxiao Li , Felix Dietrich , Manuel Dahmen , Ioannis G. Kevrekidis

This paper introduces AgriIR, a configurable retrieval augmented generation (RAG) framework designed to deliver grounded, domain-specific answers while maintaining flexibility and low computational cost. Instead of relying on large,…

Information Retrieval · Computer Science 2026-04-21 Shuvam Banerji Seal , Aheli Poddar , Alok Mishra , Dwaipayan Roy

RAG systems rely on rerankers to identify relevant documents. However, fine-tuning these models remains challenging due to the scarcity of annotated query-document pairs. Existing distillation-based approaches suffer from training-inference…

Computation and Language · Computer Science 2025-06-10 Siyuan Huang , Zhiyuan Ma , Jintao Du , Changhua Meng , Weiqiang Wang , Jingwen Leng , Minyi Guo , Zhouhan Lin

Text-to-Image (T2I) models and Unified Multimodal Models (UMMs) have achieved remarkable progress in visual generation. However, their reliance on a single-pass generation paradigm limits their ability to handle complex prompts requiring…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Junjie Wang , Xinghua Lou , Jason Li , Ye Tian , Keyu Chen , Yulin Li , Bin Kang , Jacky Mai , Yanwei Li , Zhuotao Tian , Liqiang Nie

Retrieval-augmented generation (RAG) is a common way to ground language models in external documents and up-to-date information. Classical retrieval systems relied on lexical methods such as BM25, which rank documents by term overlap with…

Computation and Language · Computer Science 2026-03-05 Martin Asenov , Kenza Benkirane , Dan Goldwater , Aneiss Ghodsi

Multi-modal Retrieval-Augmented Generation (RAG) has become a critical method for empowering LLMs by leveraging candidate visual documents. However, current methods consider the entire document as the basic retrieval unit, introducing…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Yinglu Li , Zhiying Lu , Zhihang Liu , Yiwei Sun , Chuanbin Liu , Hongtao Xie

Retrieval-augmented generation (RAG) has gained wide attention as the key component to improve generative models with external knowledge augmentation from information retrieval. It has shown great prominence in enhancing the functionality…

Information Retrieval · Computer Science 2024-11-06 Zihan Wang , Xuri Ge , Joemon M. Jose , Haitao Yu , Weizhi Ma , Zhaochun Ren , Xin Xin

Multi-agent reinforcement learning (MARL) provides an efficient way for simultaneously learning policies for multiple agents interacting with each other. However, in scenarios requiring complex interactions, existing algorithms can suffer…

Machine Learning · Computer Science 2022-03-08 Xiaobai Ma , David Isele , Jayesh K. Gupta , Kikuo Fujimura , Mykel J. Kochenderfer

Deep convolutional neural networks perform better on images containing spatially invariant degradations, also known as synthetic degradations; however, their performance is limited on real-degraded photographs and requires multiple-stage…

Computer Vision and Pattern Recognition · Computer Science 2020-10-02 Saeed Anwar , Nick Barnes , Lars Petersson

Recent studies indicate that deep learning plays a crucial role in the automated visual inspection of road infrastructures. However, current learning schemes are static, implying no dynamic adaptation to users' feedback. To address this…

Computer Vision and Pattern Recognition · Computer Science 2023-03-06 Iason Katsamenis , Eftychios Protopapadakis , Nikolaos Bakalos , Anastasios Doulamis , Nikolaos Doulamis , Athanasios Voulodimos

Continual Learning entails progressively acquiring knowledge from new data while retaining previously acquired knowledge, thereby mitigating ``Catastrophic Forgetting'' in neural networks. Our work presents a novel uncertainty-driven…

Computer Vision and Pattern Recognition · Computer Science 2025-05-12 Sriram Mandalika , Harsha Vardhan , Athira Nambiar

Advanced Multimodal Large Language Models (MLLMs) struggle with recent Knowledge-based VQA tasks, such as INFOSEEK and Encyclopedic-VQA, due to their limited and frozen knowledge scope, often leading to ambiguous and inaccurate responses.…

Artificial Intelligence · Computer Science 2024-11-25 Tao Zhang , Ziqi Zhang , Zongyang Ma , Yuxin Chen , Zhongang Qi , Chunfeng Yuan , Bing Li , Junfu Pu , Yuxuan Zhao , Zehua Xie , Jin Ma , Ying Shan , Weiming Hu

Information retrieval methods often rely on a single embedding model trained on large, general-domain datasets like MSMARCO. While this approach can produce a retriever with reasonable overall performance, they often underperform models…

Information Retrieval · Computer Science 2025-02-27 Hyunji Lee , Luca Soldaini , Arman Cohan , Minjoon Seo , Kyle Lo

Retrieval-augmented generation (RAG) effectively addresses issues of static knowledge and hallucination in large language models. Existing studies mostly focus on question scenarios with clear user intents and concise answers. However, it…

Computation and Language · Computer Science 2025-02-18 Shuting Wang , Xin Yu , Mang Wang , Weipeng Chen , Yutao Zhu , Zhicheng Dou

Leveraging powerful deep learning techniques, the end-to-end (E2E) learning of communication system is able to outperform the classical communication system. Unfortunately, this communication system cannot be trained by deep learning…

Information Theory · Computer Science 2022-04-04 Hao Jiang , Shuangkaisheng Bi , Linglong Dai , Hao Wang , Jiankun Zhang

Large language models (LLMs) often exhibit limited performance on domain-specific tasks due to the natural disproportionate representation of specialized information in their training data and the static nature of these datasets. Knowledge…

Computation and Language · Computer Science 2025-09-30 Chaojun Nie , Jun Zhou , Guanxiang Wang , Shisong Wu , Zichen Wang

Multimodal document retrieval systems enable information access across text, images, and layouts, benefiting various domains like document-based question answering, report analysis, and interactive content summarization. Rerankers improve…

Artificial Intelligence · Computer Science 2025-06-24 Mingjun Xu , Jinhan Dong , Jue Hou , Zehui Wang , Sihang Li , Zhifeng Gao , Renxin Zhong , Hengxing Cai

Accurately identifying adversarial techniques in security texts is critical for effective cyber defense. However, existing methods face a fundamental trade-off: they either rely on generic models with limited domain precision or require…

Cryptography and Security · Computer Science 2025-08-12 Ahmed Lekssays , Utsav Shukla , Husrev Taha Sencar , Md Rizwan Parvez