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Retrieval-augmented generation (RAG) has emerged as a popular solution to mitigate the hallucination issues of large language models. However, existing studies on RAG seldom address the issue of predictive uncertainty, i.e., how likely it…

Computation and Language · Computer Science 2024-12-05 Lu Chen , Ruqing Zhang , Jiafeng Guo , Yixing Fan , Xueqi Cheng

Retrieval-Augmented Generation (RAG) effectively enhances Large Language Models (LLMs) by incorporating retrieved external knowledge into the generation process. Reasoning models improve LLM performance in multi-hop QA tasks, which require…

Computation and Language · Computer Science 2026-01-21 Guo Chen , Junjie Huang , Huaijin Xie , Fei Sun , Tao Jia

Conformance checking techniques detect undesired process behavior by comparing process executions that are recorded in event logs to desired behavior that is captured in a dedicated process model. If such models are not available,…

Machine Learning · Computer Science 2025-05-29 Michael Grohs , Adrian Rebmann , Jana-Rebecca Rehse

Large Language Models (LLMs) excel in various language tasks but they often generate incorrect information, a phenomenon known as "hallucinations". Retrieval-Augmented Generation (RAG) aims to mitigate this by using document retrieval for…

Information Retrieval · Computer Science 2024-07-18 Hamin Koo , Minseon Kim , Sung Ju Hwang

We propose a simple, unsupervised method that injects pragmatic principles in retrieval-augmented generation (RAG) frameworks such as Dense Passage Retrieval to enhance the utility of retrieved contexts. Our approach first identifies which…

Computation and Language · Computer Science 2025-02-28 Haris Riaz , Ellen Riloff , Mihai Surdeanu

Retrieval-augmented generation (RAG) helps address the limitations of parametric knowledge embedded within a language model (LM). In real world settings, retrieved information can vary in complexity, yet most investigations of LM…

Computation and Language · Computer Science 2025-05-30 Lovisa Hagström , Sara Vera Marjanović , Haeun Yu , Arnav Arora , Christina Lioma , Maria Maistro , Pepa Atanasova , Isabelle Augenstein

Large language models (LLMs) have shown remarkable capabilities in various natural language processing tasks, yet they often struggle with maintaining factual accuracy, particularly in knowledge-intensive domains like healthcare. This study…

Computation and Language · Computer Science 2024-11-01 Hieu Tran , Junda Wang , Yujan Ting , Weijing Huang , Terrence Chen

Retrieval-Augmented Generation (RAG) was introduced to enhance the capabilities of Large Language Models (LLMs) beyond their encoded prior knowledge. This is achieved by providing LLMs with an external source of knowledge, which helps…

Computation and Language · Computer Science 2026-03-11 Hazem Amamou , Stéphane Gagnon , Alan Davoust , Anderson R. Avila

Retrieval-Augmented Generation (RAG) has recently emerged as a method to extend beyond the pre-trained knowledge of Large Language Models by augmenting the original prompt with relevant passages or documents retrieved by an Information…

Retrieval-Augmented Generation (RAG) grounds Large Language Model (LLM) output by leveraging external knowledge sources to reduce factual hallucinations. However, prior work lacks a comprehensive evaluation of different language families,…

Retrieval-Augmented Generation (RAG) is a framework in which a Generator, such as a Large Language Model (LLM), produces answers by retrieving documents from an external collection using a Retriever. In practice, Generators must integrate…

Computation and Language · Computer Science 2026-04-30 Koki Itai , Shunichi Hasegawa , Yuta Yamamoto , Gouki Minegishi , Masaki Otsuki

Large language models (LLMs) frequently hallucinate, limiting their reliability in knowledge-intensive applications. Retrieval-augmented generation (RAG) and conformal factuality have emerged as potential ways to address this limitation.…

Artificial Intelligence · Computer Science 2026-03-18 Yi Chen , Daiwei Chen , Sukrut Madhav Chikodikar , Caitlyn Heqi Yin , Ramya Korlakai Vinayak

Large language models (LLMs) incorporated with Retrieval-Augmented Generation (RAG) have demonstrated powerful capabilities in generating counterspeech against misinformation. However, current studies rely on limited evidence and offer less…

Computation and Language · Computer Science 2025-09-16 Anirban Saha Anik , Xiaoying Song , Elliott Wang , Bryan Wang , Bengisu Yarimbas , Lingzi Hong

Large language models (LLMs) have achieved strong empirical performance in various fields, benefiting from their huge amount of parameters that store knowledge. However, LLMs still suffer from several key issues, such as hallucination…

Computation and Language · Computer Science 2026-05-20 Shangyu Wu , Ying Xiong , Yufei Cui , Haolun Wu , Can Chen , Ye Yuan , Lianming Huang , Xue Liu , Tei-Wei Kuo , Nan Guan , Chun Jason Xue

Retrieval-Augmented Generation (RAG) aims to generate more reliable and accurate responses, by augmenting large language models (LLMs) with the external vast and dynamic knowledge. Most previous work focuses on using RAG for single-round…

Artificial Intelligence · Computer Science 2024-03-28 Linhao Ye , Zhikai Lei , Jianghao Yin , Qin Chen , Jie Zhou , Liang He

Retrieval-Augmented Generation (RAG) has been shown to enhance the factual accuracy of Large Language Models (LLMs), but existing methods often suffer from limited reasoning capabilities in effectively using the retrieved evidence,…

Computation and Language · Computer Science 2024-10-03 Shayekh Bin Islam , Md Asib Rahman , K S M Tozammel Hossain , Enamul Hoque , Shafiq Joty , Md Rizwan Parvez

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

Retrieval-augmented generation (RAG) techniques have emerged as a promising solution to enhance the reliability of large language models (LLMs) by addressing issues like hallucinations, outdated knowledge, and domain adaptation. In…

Computation and Language · Computer Science 2025-01-28 Weihang Su , Yichen Tang , Qingyao Ai , Junxi Yan , Changyue Wang , Hongning Wang , Ziyi Ye , Yujia Zhou , Yiqun Liu

Large language models (LLMs) frequently generate confident yet factually incorrect content when used for language generation (a phenomenon often known as hallucination). Retrieval augmented generation (RAG) tries to reduce factual errors by…

Information Retrieval · Computer Science 2026-04-01 Dobrik Georgiev , Kheeran Naidu , Alberto Cattaneo , Federico Monti , Carlo Luschi , Daniel Justus

Retrieval augmented generation (RAG) is frequently used to mitigate hallucinations and provide up-to-date knowledge for large language models (LLMs). However, given that document retrieval is an imprecise task and sometimes results in…

Computation and Language · Computer Science 2025-02-10 Kevin Wu , Eric Wu , James Zou