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Retrieval-augmented generation (RAG) has emerged as an approach to augment large language models (LLMs) by reducing their reliance on static knowledge and improving answer factuality. RAG retrieves relevant context snippets and generates an…

Computation and Language · Computer Science 2025-02-21 Juraj Vladika , Florian Matthes

Large Multimodal Models (LMMs) excel in natural language and visual understanding but are challenged by exacting tasks such as Knowledge-based Visual Question Answering (KB-VQA) which involve the retrieval of relevant information from…

Computation and Language · Computer Science 2024-06-06 Weizhe Lin , Jingbiao Mei , Jinghong Chen , Bill Byrne

We propose a method to improve Visual Question Answering (VQA) with Retrieval-Augmented Generation (RAG) by introducing text-grounded object localization. Rather than retrieving information based on the entire image, our approach enables…

Artificial Intelligence · Computer Science 2025-10-01 Xinxi Chen , Tianyang Chen , Lijia Hong

The advancement of Multimodal Large Language Models (MLLMs) has driven significant progress in Visual Question Answering (VQA), evolving from Single to Multi Image VQA (MVQA). However, the increased number of images in MVQA inevitably…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Kang Zeng , Guojin Zhong , Jintao Cheng , Jin Yuan , Zhiyong Li

The integration of Large Language Models (LLMs) into healthcare is constrained by knowledge limitations, hallucinations, and a disconnect from Evidence-Based Medicine (EBM). While Retrieval-Augmented Generation (RAG) offers a solution,…

Computation and Language · Computer Science 2026-02-03 Qiaoyu Zheng , Yuze Sun , Chaoyi Wu , Weike Zhao , Pengcheng Qiu , Yongguo Yu , Kun Sun , Jian Zhang , Yanfeng Wang , Ya Zhang , Weidi Xie

Multi-modal large language models (MLLMs) have demonstrated remarkable vision-language capabilities, primarily due to the exceptional in-context understanding and multi-task learning strengths of large language models (LLMs). The advent of…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Jianing Li , Xi Nan , Ming Lu , Li Du , Shanghang Zhang

Multi-modal retrieval-augmented Question Answering (MRAQA), integrating text and images, has gained significant attention in information retrieval (IR) and natural language processing (NLP). Traditional ranking methods rely on small…

Computation and Language · Computer Science 2025-01-24 Yang Bai , Christan Earl Grant , Daisy Zhe Wang

Visual question answering (VQA) is a challenging multi-modal task that requires not only the semantic understanding of both images and questions, but also the sound perception of a step-by-step reasoning process that would lead to the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Siwen Luo , Soyeon Caren Han , Kaiyuan Sun , Josiah Poon

Large Language Models (LLMs) have achieved unprecedented fluency but remain susceptible to "hallucinations" - the generation of factually incorrect or ungrounded content. This limitation is particularly critical in high-stakes domains where…

Computation and Language · Computer Science 2026-03-26 Md. Asraful Haque , Aasar Mehdi , Maaz Mahboob , Tamkeen Fatima

Large Language Models (LLMs) demonstrate impressive reasoning ability and the maintenance of world knowledge not only in natural language tasks, but also in some vision-language tasks such as open-domain knowledge-based visual question…

Computation and Language · Computer Science 2024-06-11 Ziyue Wang , Chi Chen , Peng Li , Yang Liu

Retrieval-Augmented Generation (RAG) has significantly mitigated the hallucinations of Large Language Models (LLMs) by grounding the generation with external knowledge. Recent extensions of RAG to graph-based retrieval offer a promising…

Machine Learning · Computer Science 2025-09-23 Jialin Chen , Houyu Zhang , Seongjun Yun , Alejandro Mottini , Rex Ying , Xiang Song , Vassilis N. Ioannidis , Zheng Li , Qingjun Cui

While Retrieval-Augmented Generation (RAG) augments Large Language Models (LLMs) with external knowledge, conventional single-agent RAG remains fundamentally limited in resolving complex queries demanding coordinated reasoning across…

Computation and Language · Computer Science 2025-04-18 Pei Liu , Xin Liu , Ruoyu Yao , Junming Liu , Siyuan Meng , Ding Wang , Jun Ma

Multimodal Retrieval-Augmented Generation (MRAG) is widely adopted for Multimodal Large Language Models (MLLMs) with external evidence to reduce hallucinations. Despite its success, most existing MRAG frameworks treat retrieved evidence as…

Information Retrieval · Computer Science 2026-05-01 Xihang Wang , Zihan Wang , Chengkai Huang , Cao Liu , Ke Zeng , Quan Z. Sheng , Lina Yao

Document visual question answering (DocVQA) pipelines that answer questions from documents have broad applications. Existing methods focus on handling single-page documents with multi-modal language models (MLMs), or rely on text-based…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Jaemin Cho , Debanjan Mahata , Ozan Irsoy , Yujie He , Mohit Bansal

Generating high-quality answers consistently by providing contextual information embedded in the prompt passed to the Large Language Model (LLM) is dependent on the quality of information retrieval. As the corpus of contextual information…

Information Retrieval · Computer Science 2024-08-01 Sai Ganesh , Anupam Purwar , Gautam B

Prevailing Multimodal Large Language Models (MLLMs) encode the input image(s) as vision tokens and feed them into the language backbone, similar to how Large Language Models (LLMs) process the text tokens. However, the number of vision…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Shiyu Zhao , Zhenting Wang , Felix Juefei-Xu , Xide Xia , Miao Liu , Xiaofang Wang , Mingfu Liang , Ning Zhang , Dimitris N. Metaxas , Licheng Yu

Multimodal Retrieval-Augmented Generation (MRAG) has emerged as a key paradigm for grounding MLLMs with external knowledge. While query pre-processing (e.g., rewriting) is standard in text-based RAG, existing MRAG pipelines predominantly…

Information Retrieval · Computer Science 2026-02-16 Jiankun Zhang , Shenglai Zeng , Kai Guo , Xinnan Dai , Hui Liu , Jiliang Tang , Yi Chang

In this paper, we rethink sparse lexical representations for image retrieval. By utilizing multi-modal large language models (M-LLMs) that support visual prompting, we can extract image features and convert them into textual data, enabling…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Kengo Nakata , Daisuke Miyashita , Youyang Ng , Yasuto Hoshi , Jun Deguchi

Multimodal Large Language Models (MLLMs) have recently been applied to universal multimodal retrieval, where Chain-of-Thought (CoT) reasoning improves candidate reranking. However, existing approaches remain largely language-driven, relying…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Dongyang Chen , Chaoyang Wang , Dezhao Su , Xi Xiao , Zeyu Zhang , Jing Xiong , Qing Li , Yuzhang Shang , Shichao Kan

As connected and automated transportation systems evolve, there is a growing need for federal and state authorities to revise existing laws and develop new statutes to address emerging cybersecurity and data privacy challenges. This study…

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