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Retrieval-augmented generation (RAG) enables large language models (LLMs) to dynamically access external information, which is powerful for answering questions over previously unseen documents. Nonetheless, they struggle with high-level…

Artificial Intelligence · Computer Science 2026-04-21 Chi-Hsiang Hsiao , Yi-Cheng Wang , Tzung-Sheng Lin , Yi-Ren Yeh , Chu-Song Chen

Document retrieval is an important task for search and Retrieval-Augmented Generation (RAG) applications. Large Language Models (LLMs) have contributed to improving the accuracy of text-based document retrieval. However, documents with…

Information Retrieval · Computer Science 2025-05-22 Radek Osmulski , Gabriel de Souza P. Moreira , Ronay Ak , Mengyao Xu , Benedikt Schifferer , Even Oldridge

We propose a scalable and cost-efficient framework for deploying Graph-based Retrieval-Augmented Generation (GraphRAG) in enterprise environments. While GraphRAG has shown promise for multi- hop reasoning and structured retrieval, its…

Artificial Intelligence · Computer Science 2025-12-19 Congmin Min , Sahil Bansal , Joyce Pan , Abbas Keshavarzi , Rhea Mathew , Amar Viswanathan Kannan

Vision-language retrieval-augmented generation (RAG) has become an effective approach for tackling Knowledge-Based Visual Question Answering (KB-VQA), which requires external knowledge beyond the visual content presented in images. The…

Information Retrieval · Computer Science 2025-09-15 Wei Yang , Jingjing Fu , Rui Wang , Jinyu Wang , Lei Song , Jiang Bian

Vision-centric retrieval for VQA requires retrieving images to supply missing visual cues and integrating them into the reasoning process. However, selecting the right images and integrating them effectively into the model's reasoning…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Zhuohong Chen , Zhengxian Wu , Zirui Liao , Shenao Jiang , Hangrui Xu , Yang Chen , Chaokui Su , Xiaoyu Liu , Haoqian Wang

Visual RAG has offered an alternative to traditional RAG. It treats documents as images and uses vision encoders to obtain vision patch tokens. However, hundreds of patch tokens per document create retrieval and storage challenges in a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Ho Hung Lim , Yi Yang

Understanding information from a collection of multiple documents, particularly those with visually rich elements, is important for document-grounded question answering. This paper introduces VisDoMBench, the first comprehensive benchmark…

Computation and Language · Computer Science 2025-02-12 Manan Suri , Puneet Mathur , Franck Dernoncourt , Kanika Goswami , Ryan A. Rossi , Dinesh Manocha

This paper addresses the need for improved precision in existing knowledge-enhanced question-answering frameworks, specifically Retrieval-Augmented Generation (RAG) methods that primarily focus on enhancing recall. We propose a multi-layer…

Artificial Intelligence · Computer Science 2025-02-24 Rubing Chen , Xulu Zhang , Jiaxin Wu , Wenqi Fan , Xiao-Yong Wei , Qing Li

Retrieval-Augmented Generation (RAG) systems critically depend on retrieval quality, yet no systematic comparison of modern retrieval methods exists for heterogeneous documents containing both text and tabular data. We benchmark ten…

Information Retrieval · Computer Science 2026-04-03 Meftun Akarsu , Recep Kaan Karaman , Christopher Mierbach

Large multimodal models (LMMs) have achieved impressive progress in vision-language understanding, yet they face limitations in real-world applications requiring complex reasoning over a large number of images. Existing benchmarks for…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Jun Chen , Dannong Xu , Junjie Fei , Chun-Mei Feng , Mohamed Elhoseiny

Multi-page Document Visual Question Answering requires reasoning over semantics, layouts, and visual elements in long, visually dense documents. Existing OCR-free methods face a trade-off between capacity and precision: end-to-end models…

Computation and Language · Computer Science 2026-04-16 Yuanlei Zheng , Pei Fu , Hang Li , Ziyang Wang , Yuyi Zhang , Wenyu Ruan , Xiaojin Zhang , Zhongyu Wei , Zhenbo Luo , Jian Luan , Wei Chen , Xiang Bai

In long, multi-page industrial documents, retrieval-augmented generation (RAG) depends heavily on whether chunk boundaries follow the document's true structure. Existing text-centric chunkers and generative hierarchy parsers often miss…

Information Retrieval · Computer Science 2026-05-20 Joongmin Shin , Jeongbae Park , Jaehyung Seo , Heuiseok Lim

Despite initial successes and a variety of architectures, retrieval-augmented generation systems still struggle to reliably retrieve and connect the multi-step evidence required for complicated reasoning tasks. Most of the standard RAG…

Artificial Intelligence · Computer Science 2026-05-26 Jovan Pavlović , Miklós Krész , László Hajdu

Retrieval-Augmented Generation (RAG) has become the standard paradigm for grounding Large Language Model outputs in external knowledge. Lumer et al. [1] presented the first systematic evaluation comparing vector-based agentic RAG against…

Information Retrieval · Computer Science 2026-04-17 Afshan Hashmi

AI systems have achieved remarkable success in processing text and relational data, yet visual document processing remains relatively underexplored. Whereas traditional systems require OCR transcriptions to convert these visual documents…

Retrieval-Augmented Generation (RAG) enhances language models by incorporating external knowledge at inference time. However, graph-based RAG systems often suffer from structural overhead and imprecise retrieval: they require costly…

Information Retrieval · Computer Science 2025-06-24 Jiale Zhang , Jiaxiang Chen , Zhucong Li , Jie Ding , Kui Zhao , Zenglin Xu , Xin Pang , Yinghui Xu

Document retrieval systems have experienced a revitalized interest with the advent of retrieval-augmented generation (RAG). RAG architecture offers a lower hallucination rate than LLM-only applications. However, the accuracy of the…

Information Retrieval · Computer Science 2024-08-21 Kavsar Huseynova , Jafar Isbarov

Retrieval-Augmented Generation (RAG) improves Large Language Models (LLMs) by retrieving supporting documents into the prompt, but existing methods do not explicitly target queries that require fetching multiple documents with substantially…

RAG-based QA has emerged as a powerful method for processing long industrial documents. However, conventional text chunking approaches often neglect complex and long industrial document structures, causing information loss and reduced…

Artificial Intelligence · Computer Science 2026-04-15 Joongmin Shin , Chanjun Park , Jeongbae Park , Jaehyung Seo , Heuiseok Lim

This paper addresses the challenge of building multimodal recommender systems for the movie domain, where sparse item metadata (e.g., title and genres) can limit retrieval quality and downstream recommendations. We introduce RAG-VisualRec,…

Information Retrieval · Computer Science 2026-02-17 Ali Tourani , Fatemeh Nazary , Yashar Deldjoo