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Retrieval-augmented generation (RAG) has emerged as a promising technology for addressing hallucination issues in the responses generated by large language models (LLMs). Existing studies on RAG primarily focus on applying semantic-based…

Computation and Language · Computer Science 2025-02-12 Xiangrong Zhu , Yuexiang Xie , Yi Liu , Yaliang Li , Wei Hu

Large Language Models (LLMs) exhibit hallucinations in knowledge-intensive tasks. Graph-based retrieval augmented generation (RAG) has emerged as a promising solution, yet existing approaches suffer from fundamental recall and precision…

Information Retrieval · Computer Science 2026-03-24 Duyi Pan , Tianao Lou , Xin Li , Haoze Song , Yiwen Wu , Mengyi Deng , Mingyu Yang , Wei Wang

The rapid advancement of large language models (LLMs) has significantly impacted various domains, including healthcare and biomedicine. However, the phenomenon of hallucination, where LLMs generate outputs that deviate from factual accuracy…

Computation and Language · Computer Science 2024-08-27 Duy Khoa Pham , Bao Quoc Vo

Despite the potential of Large Language Models (LLMs) in medicine, they may generate responses lacking supporting evidence or based on hallucinated evidence. While Retrieval Augment Generation (RAG) is popular to address this issue, few…

Retrieval-augmented generation (RAG) has emerged as a leading approach to reducing hallucinations in large language models (LLMs). Current RAG evaluation benchmarks primarily focus on what we call local RAG: retrieving relevant chunks from…

Computation and Language · Computer Science 2025-11-05 Qi Luo , Xiaonan Li , Tingshuo Fan , Xinchi Chen , Xipeng Qiu

Retrieval-augmented generation (RAG) based on large language models often falters on narrative documents with inherent temporal structures. Standard unstructured RAG methods rely solely on embedding-similarity matching and lack any general…

Information Retrieval · Computer Science 2025-06-09 Ze Yu Zhang , Zitao Li , Yaliang Li , Bolin Ding , Bryan Kian Hsiang Low

Retrieval-augmented generation (RAG) systems have been widely adopted in contemporary large language models (LLMs) due to their ability to improve generation quality while reducing the required input context length. In this work, we focus…

Computation and Language · Computer Science 2026-04-07 Tianyi Zhang , Andreas Marfurt

Hallucination is a key roadblock for applications of Large Language Models (LLMs), particularly for enterprise applications that are sensitive to information accuracy. To address this issue, two general approaches have been explored:…

Computation and Language · Computer Science 2024-10-15 Xinxi Chen , Li Wang , Wei Wu , Qi Tang , Yiyao Liu

Large language models are extensively applied across a wide range of tasks, such as customer support, content creation, educational tutoring, and providing financial guidance. However, a well-known drawback is their predisposition to…

Computation and Language · Computer Science 2024-07-08 Noa Nonkes , Sergei Agaronian , Evangelos Kanoulas , Roxana Petcu

Large Language Models (LLMs) succeed in many natural language processing tasks. However, their tendency to hallucinate - generate plausible but inconsistent or factually incorrect text - can cause significant problems in certain tasks,…

Computation and Language · Computer Science 2025-08-08 Xiangyan Chen , Yujian Gan , Yimeng Gu , Matthew Purver

Hallucinations, the generation of apparently convincing yet false statements, remain a major barrier to the safe deployment of LLMs. Building on the strong performance of self-detection methods, we examine the use of structured knowledge…

Computation and Language · Computer Science 2025-12-30 Sahil Kale , Antonio Luca Alfeo

This paper presents a domain-specific implementation of Retrieval-Augmented Generation (RAG) tailored to the Fair Use Doctrine in U.S. copyright law. Motivated by the increasing prevalence of DMCA takedowns and the lack of accessible legal…

Computation and Language · Computer Science 2025-05-06 Justin Ho , Alexandra Colby , William Fisher

Large Language models (LLMs) have shown strong capabilities in code review automation, such as review comment generation, yet they suffer from hallucinations -- where the generated review comments are ungrounded in the actual code -- poses…

Software Engineering · Computer Science 2026-03-26 Kla Tantithamthavorn , Hong Yi Lin , Patanamon Thongtanunam , Wachiraphan Charoenwet , Minwoo Jeong , Ming Wu

Retrieval-Augmented Generation (RAG) enhances factual accuracy by integrating external knowledge, yet it introduces a critical issue: erroneous or biased retrieval can mislead generation, compounding hallucinations, a phenomenon we term…

Computation and Language · Computer Science 2025-05-27 Wentao Hu , Wengyu Zhang , Yiyang Jiang , Chen Jason Zhang , Xiaoyong Wei , Qing Li

Retrieval-Augmented Generation (RAG) models frequently encounter hallucination phenomena when integrating external information with internal parametric knowledge. Empirical studies demonstrate that the disequilibrium between external…

Computation and Language · Computer Science 2025-05-13 Lei Wang

Retrieval-Augmented Generation enhances language models by retrieving external knowledge to support informed and grounded responses. However, traditional RAG methods rely on fragment-level retrieval, limiting their ability to address…

Information Retrieval · Computer Science 2026-05-05 Wenbiao Tao , Xinyuan Li , Yunshi Lan , Weining Qian

Electronic health record (EHR) systems present clinicians with vast repositories of clinical information, creating a significant cognitive burden where critical details are easily overlooked. While Large Language Models (LLMs) offer…

Computation and Language · Computer Science 2026-03-17 Samuel Thio , Matthew Lewis , Spiros Denaxas , Richard JB Dobson

Despite their impressive ability to generate high-quality and fluent text, generative large language models (LLMs) also produce hallucinations: statements that are misaligned with established world knowledge or provided input context.…

Computation and Language · Computer Science 2025-01-15 Abhilasha Ravichander , Shrusti Ghela , David Wadden , Yejin Choi

The legal profession necessitates a multidimensional approach that involves synthesizing an in-depth comprehension of a legal issue with insightful commentary based on personal experience, combined with a comprehensive understanding of…

Computation and Language · Computer Science 2023-06-21 Shawn Curran , Sam Lansley , Oliver Bethell

A common and fundamental limitation of Generative AI (GenAI) is its propensity to hallucinate. While large language models (LLM) have taken the world by storm, without eliminating or at least reducing hallucinations, real-world GenAI…

Machine Learning · Computer Science 2024-12-03 Patrice Béchard , Orlando Marquez Ayala