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Vision-and-Language Navigation (VLN) in large-scale urban environments requires embodied agents to ground linguistic instructions in complex scenes and recall relevant experiences over extended time horizons. Prior modular pipelines offer…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Lixuan He , Haoyu Dong , Zhenxing Chen , Yangcheng Yu , Jie Feng , Yong Li

LLM-based conversational AI agents struggle to maintain coherent behavior over long horizons due to limited context. While RAG-based approaches are increasingly adopted to overcome this limitation by storing interactions in external memory…

Artificial Intelligence · Computer Science 2026-05-13 Jiazhou Liang , Armin Toroghi , Yifan Simon Liu , Faeze Moradi Kalarde , Liam Gallagher , Scott Sanner

Retrieval-Augmented Generation (RAG) mitigates key limitations of Large Language Models (LLMs)-such as factual errors, outdated knowledge, and hallucinations-by dynamically retrieving external information. Recent work extends this paradigm…

Computation and Language · Computer Science 2026-05-22 Jingru Lin , Chen Zhang , Stephen Y. Liu , Haizhou Li

When video reasoning requires external knowledge, many systems with large multimodal models (LMMs) adopt retrieval augmentation to supply the missing context. Appending textual or multi-clip evidence, however, forces heterogeneous signals…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Songyuan Yang , Weijiang Yu , Ziyu Liu , Guijian Tang , Wenjing Yang , Huibin Tan , Nong Xiao

Despite the impressive advancements of Large Language Models (LLMs) in generating text, they are often limited by the knowledge contained in the input and prone to producing inaccurate or hallucinated content. To tackle these issues,…

Information Retrieval · Computer Science 2024-05-29 Yu Wang , Nedim Lipka , Ruiyi Zhang , Alexa Siu , Yuying Zhao , Bo Ni , Xin Wang , Ryan Rossi , Tyler Derr

Object navigation (ObjectNav) in real-world environments is a complex problem that requires simultaneously addressing multiple challenges, including complex spatial structure, long-horizon planning and semantic understanding. Recent…

Robotics · Computer Science 2026-03-10 Haokun Zhu , Zongtai Li , Zihan Liu , Kevin Guo , Zhengzhi Lin , Yuxin Cai , Guofei Chen , Chen Lv , Wenshan Wang , Jean Oh , Ji Zhang

Visual navigation is a fundamental capability for autonomous home-assistance robots, enabling long-horizon tasks such as object search. While recent methods have leveraged Large Language Models (LLMs) to incorporate commonsense reasoning…

Robotics · Computer Science 2026-05-01 Teng Wang , Xinxin Zhao , Wenzhe Cai , Changyin Sun

Recent advances in Iterative Vision-and-Language Navigation (IVLN) introduce a more meaningful and practical paradigm of VLN by maintaining the agent's memory across tours of scenes. Although the long-term memory aligns better with the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Ganlong Zhao , Guanbin Li , Weikai Chen , Yizhou Yu

With the recent progress in large-scale vision and language representation learning, Vision Language Pre-training (VLP) models have achieved promising improvements on various multi-modal downstream tasks. Albeit powerful, these models have…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Jiahua Rao , Zifei Shan , Longpo Liu , Yao Zhou , Yuedong Yang

Existing Vision-Language Navigation (VLN) methods typically adopt an egocentric, step-by-step paradigm, which struggles with error accumulation and limits efficiency. While recent approaches attempt to leverage pre-built environment maps,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Dijia Zhan , Jinyi Li , Chenxi Zheng , Shaoyu Huang , Yong Li , Jie Tang , Xuemiao Xu

Retrieval-Augmented Generation (RAG) has gained significant attention in recent years for its potential to enhance natural language understanding and generation by combining large-scale retrieval systems with generative models. RAG…

Computation and Language · Computer Science 2025-03-18 Mingyue Cheng , Yucong Luo , Jie Ouyang , Qi Liu , Huijie Liu , Li Li , Shuo Yu , Bohou Zhang , Jiawei Cao , Jie Ma , Daoyu Wang , Enhong Chen

Retrieval-Augmented Generation (RAG) mitigates hallucination in large language models (LLMs) by incorporating external knowledge during generation. However, the effectiveness of RAG depends not only on the design of the retriever and the…

Computation and Language · Computer Science 2026-04-15 Xudong Wang , Chaoning Zhang , Qigan Sun , Zhenzhen Huang , Chang Lu , Sheng Zheng , Zeyu Ma , Caiyan Qin , Yang Yang , Hengtao Shen

Retrieval-Augmented Generation (RAG) has been introduced to mitigate hallucinations in Multimodal Large Language Models (MLLMs) by incorporating external knowledge into the generation process, and it has become a widely adopted approach for…

Artificial Intelligence · Computer Science 2026-03-17 Zhuohang Jiang , Pangjing Wu , Xu Yuan , Wenqi Fan , Qing Li

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

Vision-language retrieval-augmented generation (RAG) has become an effective approach for tackling Knowledge-Based Visual Question Answering (KB-VQA), which requires external knowledge beyond the visual content presented in images. The…

Information Retrieval · Computer Science 2025-09-15 Wei Yang , Jingjing Fu , Rui Wang , Jinyu Wang , Lei Song , Jiang Bian

Vision-and-language navigation (VLN) enables the agent to navigate to a remote location following the natural language instruction in 3D environments. At each navigation step, the agent selects from possible candidate locations and then…

Computer Vision and Pattern Recognition · Computer Science 2024-04-03 Zihan Wang , Xiangyang Li , Jiahao Yang , Yeqi Liu , Junjie Hu , Ming Jiang , Shuqiang Jiang

Object Goal Navigation (ObjectNav) in temporally changing indoor environments is challenging because object relocation can invalidate historical scene knowledge. To address this issue, we propose a probabilistic planning framework that…

Image-goal navigation steers an agent to a target location specified by an image in unseen environments. Existing methods primarily handle this task by learning an end-to-end navigation policy, which compares the similarities of target and…

Robotics · Computer Science 2026-04-21 Pengna Li , Kangyi Wu , Shaoqing Xu , Fang Li , Lin Zhao , Long Chen , Zhi-Xin Yang , Nanning Zheng

Retrieval-Augmented Generation (RAG) has emerged as a powerful framework to overcome the knowledge limitations of Large Language Models (LLMs) by integrating external retrieval with language generation. While early RAG systems based on…

Artificial Intelligence · Computer Science 2025-06-13 Jintao Liang , Gang Su , Huifeng Lin , You Wu , Rui Zhao , Ziyue Li

Object goal navigation (ObjectNav) is a fundamental task in embodied AI, requiring an agent to locate a target object in previously unseen environments. This task is particularly challenging because it requires both perceptual and cognitive…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Yihan Cao , Jiazhao Zhang , Zhinan Yu , Shuzhen Liu , Zheng Qin , Qin Zou , Bo Du , Kai Xu