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Recently, end-to-end trained models for multiple-choice commonsense question answering (QA) have delivered promising results. However, such question-answering systems cannot be directly applied in real-world scenarios where answer…

计算与语言 · 计算机科学 2023-03-21 Zhen Han , Yue Feng , Mingming Sun

While Retrieval-Augmented Generation (RAG) mitigates hallucination and knowledge staleness in Large Language Models (LLMs), existing frameworks often falter on complex, multi-hop queries that require synthesizing information from disparate…

计算与语言 · 计算机科学 2025-10-28 Mohammad Aghajani Asl , Majid Asgari-Bidhendi , Behrooz Minaei-Bidgoli

Retrieval-augmented generation (RAG) enables large language models (LLMs) to dynamically access external information, which is powerful for answering questions over previously unseen documents. Nonetheless, they struggle with high-level…

人工智能 · 计算机科学 2026-04-21 Chi-Hsiang Hsiao , Yi-Cheng Wang , Tzung-Sheng Lin , Yi-Ren Yeh , Chu-Song Chen

Large Language Models (LLMs) excel in many natural language processing tasks but often exhibit factual inconsistencies in knowledge-intensive settings. Integrating external knowledge resources, particularly knowledge graphs (KGs), provides…

计算与语言 · 计算机科学 2026-02-17 Shuai Wang , Yinan Yu

Large language models (LLMs) still struggle with multi-hop reasoning over knowledge-graphs (KGs), and we identify a previously overlooked structural reason for this difficulty: Transformer attention heads naturally specialize in distinct…

计算与语言 · 计算机科学 2026-04-15 Jinliang Liu , Jiale Bai , Shaoning Zeng

Information retrieval and question answering from safety regulations are essential for automated construction compliance checking but are hindered by the linguistic and structural complexity of regulatory text. Many queries are multi-hop,…

人工智能 · 计算机科学 2026-05-13 Yuxin Zhang , Xi Wang , Mo Hu , Zhenyu Zhang

Iterative retrieval-augmented generation (iRAG) models offer an effective approach for multi-hop question answering (QA). However, their retrieval process faces two key challenges: (1) it can be disrupted by irrelevant documents or…

计算与语言 · 计算机科学 2025-02-26 Jinyuan Fang , Zaiqiao Meng , Craig Macdonald

Visual Question Answering (VQA) is concerned with answering free-form questions about an image. Since it requires a deep semantic and linguistic understanding of the question and the ability to associate it with various objects that are…

计算机视觉与模式识别 · 计算机科学 2021-07-15 Rajat Koner , Hang Li , Marcel Hildebrandt , Deepan Das , Volker Tresp , Stephan Günnemann

Retrieval Augmented Generation (RAG) has gradually emerged as a promising paradigm for enhancing the accuracy and factual consistency of content generated by large language models (LLMs). However, existing RAG studies primarily focus on…

信息检索 · 计算机科学 2025-07-24 Qikai Wei , Huansheng Ning , Chunlong Han , Jianguo Ding

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…

信息检索 · 计算机科学 2026-05-05 Wenbiao Tao , Xinyuan Li , Yunshi Lan , Weining Qian

Large Language Models (LLMs) often struggle with inherent knowledge boundaries and hallucinations, limiting their reliability in knowledge-intensive tasks. While Retrieval-Augmented Generation (RAG) mitigates these issues, it frequently…

人工智能 · 计算机科学 2026-02-25 Yuqi Huang , Ning Liao , Kai Yang , Anning Hu , Shengchao Hu , Xiaoxing Wang , Junchi Yan

Multi-hop question answering (QA) requires systems to iteratively retrieve evidence and reason across multiple hops. While recent RAG and agentic methods report strong results, the underlying retrieval--reasoning \emph{process} is often…

计算与语言 · 计算机科学 2026-01-05 Yuelyu Ji , Zhuochun Li , Rui Meng , Daqing He

Large language models have shown remarkable language processing and reasoning ability but are prone to hallucinate when asked about private data. Retrieval-augmented generation (RAG) retrieves relevant data that fit into an LLM's context…

机器学习 · 计算机科学 2025-11-13 Alfred Clemedtson , Borun Shi

Recent advances in retrieval-augmented generation (RAG) furnish large language models (LLMs) with iterative retrievals of relevant information to handle complex multi-hop questions. These methods typically alternate between LLM reasoning…

计算与语言 · 计算机科学 2025-05-27 Rui Li , Quanyu Dai , Zeyu Zhang , Xu Chen , Zhenhua Dong , Ji-Rong Wen

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…

计算与语言 · 计算机科学 2026-02-06 Hao Yang , Zhiyu Yang , Xupeng Zhang , Wei Wei , Yunjie Zhang , Lin Yang

Graph Retrieval-Augmented Generation (GraphRAG) has emerged as a promising paradigm that organizes external knowledge into structured graphs of entities and relations, enabling large language models (LLMs) to perform complex reasoning…

计算与语言 · 计算机科学 2026-04-14 Jinyoung Park , Sanghyeok Lee , Omar Zia Khan , Hyunwoo J. Kim , Joo-Kyung Kim

Multi-hop reasoning requires aggregating multiple documents to answer a complex question. Existing methods usually decompose the multi-hop question into simpler single-hop questions to solve the problem for illustrating the explainable…

计算与语言 · 计算机科学 2022-08-23 Siyuan Wang , Zhongyu Wei , Zhihao Fan , Qi Zhang , Xuanjing Huang

Question answering systems are the latest evolution in information retrieval technology, designed to accept complex queries in natural language and provide accurate answers using both unstructured and structured knowledge sources. Knowledge…

信息检索 · 计算机科学 2025-01-29 Arash Ghafouri , Mahdi Firouzmandi , Hasan Naderi

A key challenge of multi-hop question answering (QA) in the open-domain setting is to accurately retrieve the supporting passages from a large corpus. Existing work on open-domain QA typically relies on off-the-shelf information retrieval…

计算与语言 · 计算机科学 2019-11-05 Wenhan Xiong , Mo Yu , Xiaoxiao Guo , Hong Wang , Shiyu Chang , Murray Campbell , William Yang Wang

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…

计算与语言 · 计算机科学 2025-02-12 Xiangrong Zhu , Yuexiang Xie , Yi Liu , Yaliang Li , Wei Hu