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Document centric RAG pipelines usually begin with OCR, followed by brittle heuristics for chunking, table parsing, and layout reconstruction. These text first workflows are costly to maintain, sensitive to small layout shifts, and often…

Information Retrieval · Computer Science 2026-01-07 Anup Roy , Rishabh Gyanendra Upadhyay , Animesh Rameshbhai Panara , Robin Mills , Aidan Millar

GraphRAG integrates (knowledge) graphs with large language models (LLMs) to improve reasoning accuracy and contextual relevance. Despite its promising applications and strong relevance to multiple research communities, such as databases and…

Artificial Intelligence · Computer Science 2025-08-20 Yukun Cao , Zengyi Gao , Zhiyang Li , Xike Xie , S. Kevin Zhou , Jianliang Xu

Organizations increasingly rely on proprietary enterprise data, including HR records, structured reports, and tabular documents, for critical decision-making. While Large Language Models (LLMs) have strong generative capabilities, they are…

Computation and Language · Computer Science 2025-07-17 Chandana Cheerla

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

Recent progress in retrieval-augmented generation (RAG) has led to more accurate and interpretable multi-hop question answering (QA). Yet, challenges persist in integrating iterative reasoning steps with external knowledge retrieval. To…

Computation and Language · Computer Science 2025-10-06 Tengjun Ni , Xin Yuan , Shenghong Li , Kai Wu , Ren Ping Liu , Wei Ni , Wenjie Zhang

Large Language Models (LLMs) demonstrate strong reasoning abilities but face limitations such as hallucinations and outdated knowledge. Knowledge Graph (KG)-based Retrieval-Augmented Generation (RAG) addresses these issues by grounding LLM…

Computation and Language · Computer Science 2025-03-04 Mufei Li , Siqi Miao , Pan Li

Retrieval Augmented Generation (RAG) has emerged as a new paradigm for enhancing Large Language Model reliability through integration with external knowledge sources. However, efficient deployment of these systems presents significant…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-14 Bodun Hu , Luis Pabon , Saurabh Agarwal , Aditya Akella

Retrieval-Augmented Generation (RAG) systems for question answering typically retrieve evidence by semantic similarity between the query and document chunks. While effective for unstructured text, this approach is less reliable on…

Retrieval-augmented generation (RAG) enhances large language models with external knowledge, and tree-based RAG organizes documents into hierarchical indexes to support queries at multiple granularities. However, existing Tree-RAG methods…

Machine Learning · Computer Science 2026-05-04 Ziwen Zhao , Menglin Yang

The accelerating growth of scientific publications has intensified the need for scalable, trustworthy systems to synthesize knowledge across diverse literature. While recent retrieval-augmented generation (RAG) methods have improved access…

Digital Libraries · Computer Science 2025-11-19 Hang Ding , Yilun Zhao , Tiansheng Hu , Manasi Patwardhan , Arman Cohan

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

The volume of scientific literature is growing exponentially, leading to underutilized discoveries, duplicated efforts, and limited cross-disciplinary collaboration. Retrieval Augmented Generation (RAG) offers a way to assist scientists by…

Graph-based RAG methods like GraphRAG have shown promising global understanding of the knowledge base by constructing hierarchical entity graphs. However, they often suffer from inefficiency and rely on manually pre-defined query modes,…

Artificial Intelligence · Computer Science 2025-06-09 Yibo Zhao , Jiapeng Zhu , Ye Guo , Kangkang He , Xiang Li

Retrieval-augmented question answering over heterogeneous corpora requires connected evidence across text, tables, and graph nodes. While entity-level knowledge graphs support structured access, they are costly to construct and maintain,…

Information Retrieval · Computer Science 2026-02-20 Prasham Titiya , Rohit Khoja , Tomer Wolfson , Vivek Gupta , Dan Roth

Retrieval-Augmented Generation (RAG) has emerged as a promising framework to mitigate hallucinations in Large Language Models (LLMs), yet its overall performance is dependent on the underlying retrieval system. In the finance domain,…

Information Retrieval · Computer Science 2025-03-20 Sejong Kim , Hyunseo Song , Hyunwoo Seo , Hyunjun Kim

Process Flow Diagrams (PFDs) and Process and Instrumentation Diagrams (PIDs) are critical tools for industrial process design, control, and safety. However, the generation of precise and regulation-compliant diagrams remains a significant…

Machine Learning · Computer Science 2024-12-10 Sakhinana Sagar Srinivas , Akash Das , Shivam Gupta , Venkataramana Runkana

Retrieval-Augmented Generation (RAG) has become a core paradigm for enhancing factual grounding and multi-hop reasoning in Large Language Models (LLMs). Traditional text-based RAG often retrieves logically irrelevant pseudo-evidence, while…

Artificial Intelligence · Computer Science 2026-05-08 Jiarui Zhong , Hong Cai Chen

Standard Operating Procedures (SOPs) are critical for enterprise operations, yet existing language models struggle with SOP understanding and cross-domain generalization. Current methods fail because joint training cannot differentiate…

Computation and Language · Computer Science 2026-02-11 Siyuan Huang , Ziyu Wang , Chao Pan , Han Zhao

Building upon the standard graph-based Retrieval-Augmented Generation (RAG), the introduction of heterogeneous graphs and hypergraphs aims to enrich retrieval and generation by leveraging the relationships between multiple entities through…

Computation and Language · Computer Science 2025-09-03 Xuecheng Zou , Ke Liu , Bingbing Wang , Huafei Deng , Li Zhang , Yu Tang

Retrieval-Augmented Generation (RAG) enhances Large Language Models (LLMs) by integrating external knowledge, leading to improved accuracy and relevance. However, scaling RAG pipelines remains computationally expensive as retrieval sizes…

Information Retrieval · Computer Science 2026-03-05 Maxime Louis , Thibault Formal , Hervé Dejean , Stéphane Clinchant
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