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We propose SelfDoc, a task-agnostic pre-training framework for document image understanding. Because documents are multimodal and are intended for sequential reading, our framework exploits the positional, textual, and visual information of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Peizhao Li , Jiuxiang Gu , Jason Kuen , Vlad I. Morariu , Handong Zhao , Rajiv Jain , Varun Manjunatha , Hongfu Liu

Current tasks and methods in Document Understanding aims to process documents as single elements. However, documents are usually organized in collections (historical records, purchase invoices), that provide context useful for their…

Information Retrieval · Computer Science 2023-04-04 Rubèn Tito , Dimosthenis Karatzas , Ernest Valveny

We propose DocVXQA, a novel framework for visually self-explainable document question answering. The framework is designed not only to produce accurate answers to questions but also to learn visual heatmaps that highlight contextually…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Mohamed Ali Souibgui , Changkyu Choi , Andrey Barsky , Kangsoo Jung , Ernest Valveny , Dimosthenis Karatzas

Multimodal retrieval-augmented Generation (MM-RAG) is a key approach for applying large language models (LLMs) and agents to real-world knowledge bases, yet current evaluations are fragmented -- focusing on either text or images in…

Computation and Language · Computer Science 2026-01-06 Xiangyu Peng , Can Qin , Zeyuan Chen , Ran Xu , Caiming Xiong , Chien-Sheng Wu

In the modern era of rapidly increasing data volumes, accurately retrieving and recommending relevant documents has become crucial in enhancing the reliability of Question Answering (QA) systems. Recently, Retrieval Augmented Generation…

Information Retrieval · Computer Science 2024-09-24 Thiem Nguyen Ba , Vinh Doan The , Tung Pham Quang , Toan Tran Van

Document Visual Question Answering (DocVQA) remains challenging for existing Vision-Language Models (VLMs), especially under complex reasoning and multi-step workflows. Current approaches struggle to decompose intricate questions into…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Aymen Lassoued , Mohamed Ali Souibgui , Yousri Kessentini

We introduce a novel retrieval-augmented generation (RAG) framework tailored for multihop question answering. First, our system uses large language model (LLM) to decompose complex multihop questions into a sequence of single-hop…

Computation and Language · Computer Science 2025-08-14 Seokgi Lee

This paper introduces SynthDoc, a novel synthetic document generation pipeline designed to enhance Visual Document Understanding (VDU) by generating high-quality, diverse datasets that include text, images, tables, and charts. Addressing…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Chuanghao Ding , Xuejing Liu , Wei Tang , Juan Li , Xiaoliang Wang , Rui Zhao , Cam-Tu Nguyen , Fei Tan

Retrieval-Augmented Generation (RAG) is a powerful strategy for improving the factual accuracy of models by retrieving external knowledge relevant to queries and incorporating it into the generation process. However, existing approaches…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Soyeong Jeong , Kangsan Kim , Jinheon Baek , Sung Ju Hwang

Retrieval-augmented generation (RAG) is a paradigm that augments large language models (LLMs) with external knowledge to tackle knowledge-intensive question answering. While several benchmarks evaluate Multimodal LLMs (MLLMs) under…

Computation and Language · Computer Science 2025-08-18 Yin Wu , Quanyu Long , Jing Li , Jianfei Yu , Wenya Wang

Retrieval-Augmented Generation (RAG) pipelines must address challenges beyond simple single-document retrieval, such as interpreting visual elements (tables, charts, images), synthesizing information across documents, and providing accurate…

Artificial Intelligence · Computer Science 2026-04-22 António Loison , Quentin Macé , Antoine Edy , Victor Xing , Tom Balough , Gabriel Moreira , Bo Liu , Manuel Faysse , Céline Hudelot , Gautier Viaud

Retrieval-based multimodal document QA aims to identify and integrate relevant information from visually rich documents with complex multimodal structures. While retrieval-augmented generation (RAG) has shown strong performance in…

Information Retrieval · Computer Science 2026-04-21 Hui Wu , Haoquan Zhai , Yuchen Li , Hengyi Cai , Peirong Zhang , Yidan Zhang , Lei Wang , Chunle Wang , Yingyan Hou , Shuaiqiang Wang , Dawei Yin

Domain-specific Visually Rich Document Understanding (VRDU) presents significant challenges due to the complexity and sensitivity of documents in fields such as medicine, finance, and material science. Existing Large (Multimodal) Language…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Yihao Ding , Soyeon Caren Han , Yanbei Jiang , Yan Li , Zechuan Li , Yifan Peng

Source attribution aims to enhance the reliability of AI-generated answers by including references for each statement, helping users validate the provided answers. However, existing work has primarily focused on text-only scenario and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-19 Seokwon Song , Minsu Park , Gunhee Kim

Knowledge-based visual question answering (KB-VQA) requires vision-language models to understand images and use external knowledge, especially for rare entities and long-tail facts. Most existing retrieval-augmented generation (RAG) methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Zhuohong Chen , Zhenxian Wu , Yunyao Yu , Hangrui Xu , Zirui Liao , Zhifang Liu , Xiangwen Deng , Pen Jiao , Haoqian Wang

Financial documents--such as 10-Ks, 10-Qs, and investor presentations--span hundreds of pages and combine diverse modalities, including dense narrative text, structured tables, and complex figures. Answering questions over such content…

Computation and Language · Computer Science 2026-04-13 Chinmay Gondhalekar , Urjitkumar Patel , Fang-Chun Yeh

Visual Question Answering (VQA) focuses on providing answers to natural language questions by utilizing information from images. Although cutting-edge multimodal large language models (MLLMs) such as GPT-4o achieve strong performance on VQA…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Zhengxuan Zhang , Yin Wu , Yuyu Luo , Nan Tang

Multimodal Large Language Models (MLLMs) perform well in video understanding but degrade on long videos due to fixed-length context and weak long-term dependency modeling. Retrieval-Augmented Generation (RAG) can expand knowledge…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Zhucun Xue , Jiangning Zhang , Xurong Xie , Yuxuan Cai , Yong Liu , Xiangtai Li , Dacheng Tao

Document Visual Question Answering (DocVQA) refers to the task of answering questions from document images. Existing work on DocVQA only considers single-page documents. However, in real scenarios documents are mostly composed of multiple…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Rubèn Tito , Dimosthenis Karatzas , Ernest Valveny

Retrieval-Augmented Generation (RAG) extends Large Vision-Language Models (LVLMs) with external visual knowledge. However, existing visual RAG systems typically rely on generic retrieval signals that overlook the fine-grained visual…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Jun Wang , Shuo Tan , Zelong Sun , Tiancheng Gu , Yongle Zhao , Ziyong Feng , Kaicheng Yang , Zhiwu Lu