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Large language models (LLMs) often struggle with knowledge intensive NLP tasks, such as answering "Who won the latest World Cup?" because the knowledge they learn during training may be insufficient or outdated. Conditioning generation on…

计算与语言 · 计算机科学 2025-03-04 Matthew Finlayson , Ilia Kulikov , Daniel M. Bikel , Barlas Oguz , Xilun Chen , Aasish Pappu

Large language models (LLMs) often need to incorporate external knowledge to solve theme-specific problems. Retrieval-augmented generation (RAG) has shown its high promise, empowering LLMs to generate more qualified responses with retrieved…

机器学习 · 计算机科学 2025-08-05 Jimeng Shi , Sizhe Zhou , Bowen Jin , Wei Hu , Runchu Tian , Shaowen Wang , Giri Narasimhan , Jiawei Han

Question answering (QA) over tables and text has gained much popularity over the years. Multi-hop table-text QA requires multiple hops between the table and text, making it a challenging QA task. Although several works have attempted to…

计算与语言 · 计算机科学 2024-10-02 Jayetri Bardhan , Bushi Xiao , Daisy Zhe Wang

Retrieval-augmented generation (RAG) has emerged as a promising approach to enhance the performance of large language models (LLMs) in knowledge-intensive tasks such as those from medical domain. However, the sensitive nature of the medical…

计算与语言 · 计算机科学 2024-11-15 Nghia Trung Ngo , Chien Van Nguyen , Franck Dernoncourt , Thien Huu Nguyen

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…

Multi-hop Question Answering (QA) requires the machine to answer complex questions by finding scattering clues and reasoning from multiple documents. Graph Network (GN) and Question Decomposition (QD) are two common approaches at present.…

计算与语言 · 计算机科学 2022-03-18 Jiawei Li , Mucheng Ren , Yang Gao , Yizhe Yang

Large Language Models (LLMs) have shown proficiency in question-answering tasks but often struggle to integrate real-time knowledge, leading to potentially outdated or inaccurate responses. This problem becomes even more challenging when…

计算与语言 · 计算机科学 2024-08-15 Yucheng Shi , Qiaoyu Tan , Xuansheng Wu , Shaochen Zhong , Kaixiong Zhou , Ninghao Liu

We present RAGentA, a multi-agent retrieval-augmented generation (RAG) framework for attributed question answering (QA) with large language models (LLMs). With the goal of trustworthy answer generation, RAGentA focuses on optimizing answer…

信息检索 · 计算机科学 2025-09-03 Ines Besrour , Jingbo He , Tobias Schreieder , Michael Färber

Grounding large language models (LLMs) in verifiable external sources is a well-established strategy for generating reliable answers. Retrieval-augmented generation (RAG) is one such approach, particularly effective for tasks like question…

计算与语言 · 计算机科学 2025-07-02 Paul J. L. Ammann , Jonas Golde , Alan Akbik

Multi-hop question answering (MHQA) enables accurate answers to complex queries by retrieving and reasoning over evidence dispersed across multiple documents. Existing MHQA approaches mainly rely on iterative retrieval-augmented generation,…

人工智能 · 计算机科学 2026-04-21 Wei Chen , Lili Zhao , Zhi Zheng , HuiJun Hou , Tong Xu

Multi-hop question answering is widely used to evaluate the reasoning capabilities of large language models (LLMs), as it requires integrating multiple pieces of supporting knowledge to arrive at a correct answer. While prior work has…

计算与语言 · 计算机科学 2026-01-13 Zhuoyi Yang , Yurun Song , Iftekhar Ahmed , Ian Harris

Knowledge Graph Question Answering (KGQA) is a crucial task in natural language processing that requires reasoning over knowledge graphs (KGs) to answer natural language questions. Recent methods utilizing large language models (LLMs) have…

计算与语言 · 计算机科学 2025-06-12 Xiujun Zhou , Pingjian Zhang , Deyou Tang

Large Language Models (LLMs) have shown remarkable reasoning capabilities, while their practical applications are limited by severe factual hallucinations due to limitations in the timeliness, accuracy, and comprehensiveness of their…

人工智能 · 计算机科学 2025-06-10 Xinyan Guan , Jiali Zeng , Fandong Meng , Chunlei Xin , Yaojie Lu , Hongyu Lin , Xianpei Han , Le Sun , Jie Zhou

In Textual question answering (TQA) systems, complex questions often require retrieving multiple textual fact chains with multiple reasoning steps. While existing benchmarks are limited to single-chain or single-hop retrieval scenarios. In…

计算与语言 · 计算机科学 2023-05-24 Minjun Zhu , Yixuan Weng , Shizhu He , Kang Liu , Jun Zhao

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,…

计算与语言 · 计算机科学 2024-10-03 Shayekh Bin Islam , Md Asib Rahman , K S M Tozammel Hossain , Enamul Hoque , Shafiq Joty , Md Rizwan Parvez

Large Language Models (LLMs) have shown remarkable performance on general Question Answering (QA), yet they often struggle in domain-specific scenarios where accurate and up-to-date information is required. Retrieval-Augmented Generation…

计算与语言 · 计算机科学 2026-02-13 Haoyue Bai , Haoyu Wang , Shengyu Chen , Zhengzhang Chen , Lu-An Tang , Wei Cheng , Haifeng Chen , Yanjie Fu

Large Language Models (LLMs) demonstrate human-level capabilities in dialogue, reasoning, and knowledge retention. However, even the most advanced LLMs face challenges such as hallucinations and real-time updating of their knowledge.…

Question generation (QG) attempts to solve the inverse of question answering (QA) problem by generating a natural language question given a document and an answer. While sequence to sequence neural models surpass rule-based systems for QG,…

计算与语言 · 计算机科学 2020-11-03 Deepak Gupta , Hardik Chauhan , Akella Ravi Tej , Asif Ekbal , Pushpak Bhattacharyya

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…

计算与语言 · 计算机科学 2025-01-28 Weihang Su , Yichen Tang , Qingyao Ai , Junxi Yan , Changyue Wang , Hongning Wang , Ziyi Ye , Yujia Zhou , Yiqun Liu

Despite their remarkable capabilities, large language models (LLMs) often produce responses containing factual inaccuracies due to their sole reliance on the parametric knowledge they encapsulate. Retrieval-Augmented Generation (RAG), an ad…

计算与语言 · 计算机科学 2023-10-19 Akari Asai , Zeqiu Wu , Yizhong Wang , Avirup Sil , Hannaneh Hajishirzi