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Retrieval-augmented generation (RAG) has emerged as a promising paradigm for enhancing large language models (LLMs) on multi-hop question answering (QA), which requires reasoning over evidence from multiple documents. Current multi-hop RAG…

Computation and Language · Computer Science 2026-05-28 Yikai Zhu , Kunfeng Chen , Qihuang Zhong , Juhua Liu , Bo Du

Retrieval-Augmented Generation (RAG) has become a standard approach for enhancing large language models (LLMs) with external knowledge, mitigating hallucinations, and improving factuality. However, existing systems rely on generating…

Computation and Language · Computer Science 2026-05-08 Ha Lan N. T , Minh-Anh Nguyen , Dung D. Le

Large Language Models (LLMs) exhibit remarkable capabilities but are prone to generating inaccurate or hallucinatory responses. This limitation stems from their reliance on vast pretraining datasets, making them susceptible to errors in…

Computation and Language · Computer Science 2024-04-02 Chi-Min Chan , Chunpu Xu , Ruibin Yuan , Hongyin Luo , Wei Xue , Yike Guo , Jie Fu

Large Vision-Language Models (LVLMs) have made remarkable strides in multimodal tasks such as visual question answering, visual grounding, and complex reasoning. However, they remain limited by static training data, susceptibility to…

Artificial Intelligence · Computer Science 2025-08-27 Chan-Wei Hu , Yueqi Wang , Shuo Xing , Chia-Ju Chen , Suofei Feng , Ryan Rossi , Zhengzhong Tu

Large language models (LLMs) exhibit remarkable generative capabilities but often suffer from hallucinations. Retrieval-augmented generation (RAG) offers an effective solution by incorporating external knowledge, but existing methods still…

Computation and Language · Computer Science 2024-12-17 Xiaoxi Li , Jiajie Jin , Yujia Zhou , Yongkang Wu , Zhonghua Li , Qi Ye , Zhicheng Dou

Given a semi-structured knowledge base (SKB), where text documents are interconnected by relations, how can we effectively retrieve relevant information to answer user questions? Retrieval-Augmented Generation (RAG) retrieves documents to…

Retrieval-augmented generation (RAG) augments large language models (LLM) by retrieving relevant knowledge, showing promising potential in mitigating LLM hallucinations and enhancing response quality, thereby facilitating the great adoption…

Computation and Language · Computer Science 2024-01-30 Yixuan Tang , Yi Yang

Retrieval-Augmented Generation (RAG) over Knowledge Graphs (KGs) suffers from the fact that indexing approaches may lose important contextual nuance when text is reduced to triples, thereby degrading performance in downstream…

Computation and Language · Computer Science 2026-03-13 Riccardo Campi , Nicolò Oreste Pinciroli Vago , Mathyas Giudici , Marco Brambilla , Piero Fraternali

Retrieval-augmented generation has gained significant attention due to its ability to integrate relevant external knowledge, enhancing the accuracy and reliability of the LLMs' responses. Most of the existing methods apply a dynamic…

Computation and Language · Computer Science 2025-01-13 Liang Xiao , Wen Dai , Shuai Chen , Bin Qin , Chongyang Shi , Haopeng Jing , Tianyu Guo

Grounding large language models (LLMs) in external knowledge sources is a promising method for faithful prediction. While existing grounding approaches work well for simple queries, many real-world information needs require synthesizing…

Computation and Language · Computer Science 2025-09-23 Cheng Jiayang , Qianqian Zhuang , Haoran Li , Chunkit Chan , Xin Liu , Lin Qiu , Yangqiu Song

Retrieval-Augmented Generation (RAG) has become a foundational paradigm for equipping large language models (LLMs) with external knowledge, playing a critical role in information retrieval and knowledge-intensive applications. However,…

Computation and Language · Computer Science 2025-06-10 Weihang Su , Qingyao Ai , Jingtao Zhan , Qian Dong , Yiqun Liu

Medical open-domain question answering demands substantial access to specialized knowledge. Recent efforts have sought to decouple knowledge from model parameters, counteracting architectural scaling and allowing for training on common…

Computation and Language · Computer Science 2024-06-14 Giacomo Frisoni , Alessio Cocchieri , Alex Presepi , Gianluca Moro , Zaiqiao Meng

Recent advancements in large language models (LLMs) and multi-modal LLMs have been remarkable. However, these models still rely solely on their parametric knowledge, which limits their ability to generate up-to-date information and…

Artificial Intelligence · Computer Science 2025-04-22 Zihan Ling , Zhiyao Guo , Yixuan Huang , Yi An , Shuai Xiao , Jinsong Lan , Xiaoyong Zhu , Bo Zheng

Multi-hop Question Answering (QA) necessitates complex reasoning by integrating multiple pieces of information to resolve intricate questions. However, existing QA systems encounter challenges such as outdated information, context window…

Computation and Language · Computer Science 2024-08-23 Xiaoming Zhang , Ming Wang , Xiaocui Yang , Daling Wang , Shi Feng , Yifei Zhang

Multi-hop Question Generation (QG) aims to generate answer-related questions by aggregating and reasoning over multiple scattered evidence from different paragraphs. It is a more challenging yet under-explored task compared to conventional…

Computation and Language · Computer Science 2021-02-10 Dan Su , Yan Xu , Wenliang Dai , Ziwei Ji , Tiezheng Yu , Pascale Fung

Large Language Models (LLMs) have shown remarkable capabilities across diverse tasks, yet they face inherent limitations such as constrained parametric knowledge and high retraining costs. Retrieval-Augmented Generation (RAG) augments the…

Information Retrieval · Computer Science 2025-08-26 Leqian Li , Dianxi Shi , Jialu Zhou , Xinyu Wei , Mingyue Yang , Songchang Jin , Shaowu Yang

Retrieval-augmented generation (RAG) enhances LLMs with external knowledge, yet generation remains vulnerable to retrieval-induced noise and uncertain placement of relevant chunks, often causing hallucinations. We present Ext2Gen, an…

Computation and Language · Computer Science 2025-11-18 Hwanjun Song , Jeonghwan Choi , Minseok Kim

Large language models (LLMs) continue to struggle with knowledge-intensive questions that require up-to-date information and multi-hop reasoning. Augmenting LLMs with hybrid external knowledge, such as unstructured text and structured…

Machine Learning · Computer Science 2026-02-12 Junhong Lin , Bing Zhang , Song Wang , Ziyan Liu , Dan Gutfreund , Julian Shun , Yada Zhu

Retrieval-Augmented Generation (RAG) enhances language models by combining retrieval with generation. However, its current workflow remains largely text-centric, limiting its applicability in geoscience. Many geoscientific tasks are…

Emerging Technologies · Computer Science 2025-08-18 Runlong Yu , Shiyuan Luo , Rahul Ghosh , Lingyao Li , Yiqun Xie , Xiaowei Jia

Retrieval-augmented generation (RAG) has become a key paradigm for knowledge-intensive question answering. However, existing multi-hop RAG systems remain inefficient, as they alternate between retrieval and reasoning at each step, resulting…

Computation and Language · Computer Science 2026-02-06 Hao Yang , Zhiyu Yang , Xupeng Zhang , Wei Wei , Yunjie Zhang , Lin Yang