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Navigating complex, densely packed environments like retail stores, warehouses, and hospitals poses a significant spatial grounding challenge for humans and embodied AI. In these spaces, dense visual features quickly become stale given the…

Artificial Intelligence · Computer Science 2026-04-20 Shivendra Agrawal , Bradley Hayes

Learning low-dimensional topological representation of a network in dynamic environments is attracting much attention due to the time-evolving nature of many real-world networks. The main and common objective of Dynamic Network Embedding…

Social and Information Networks · Computer Science 2021-12-07 Chengbin Hou , Han Zhang , Shan He , Ke Tang

Heterogeneous Graph Neural Networks (HGNNs) are a class of powerful deep learning methods widely used to learn representations of heterogeneous graphs. Despite the fast development of HGNNs, they still face some challenges such as…

Machine Learning · Computer Science 2023-05-29 Xiao Yang , Xuejiao Zhao , Zhiqi Shen

Embodied agents are expected to perform object navigation in dynamic, open-world environments. However, existing approaches typically rely on static trajectories and a fixed set of object categories during training, overlooking the…

Robotics · Computer Science 2026-04-07 Ming-Ming Yu , Fei Zhu , Wenzhuo Liu , Yirong Yang , Qunbo Wang , Wenjun Wu , Jing Liu

Embodied artificial intelligence (AI) tasks shift from tasks focusing on internet images to active settings involving embodied agents that perceive and act within 3D environments. In this paper, we investigate the target-driven visual…

Computer Vision and Pattern Recognition · Computer Science 2020-05-06 Yunlian Lv , Ning Xie , Yimin Shi , Zijiao Wang , Heng Tao Shen

Trajectory data has become a key resource for automated map in-ference due to its low cost, broad coverage, and continuous availability. However, uneven trajectory density often leads to frag-mented roads in sparse areas and redundant…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Yudong Shen , Wenyu Wu , Jiali Mao , Yixiao Tong , Guoping Liu , Chaoya Wang

Despite significant progress in Vision-Language Navigation (VLN), existing approaches still rely on dense RGB videos that produce excessive patch tokens and lack explicit spatial structure, resulting in substantial computational overhead…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Jiahao Yang , Zihan Wang , Xiangyang Li , Xing Zhu , Yujun Shen , Yinghao Xu , Shuqiang Jiang

Existing navigation decision support systems often perform poorly when handling non-predefined navigation scenarios. Leveraging the generalization capabilities of large language model (LLM) in handling unknown scenarios, this research…

Artificial Intelligence · Computer Science 2025-02-25 Feng Ma , Xiu-min Wang , Chen Chen , Xiao-bin Xu , Xin-ping Yan

Graph neural networks (GNNs) learn the representation of graph-structured data, and their expressiveness can be further enhanced by inferring node relations for propagation. Attention-based GNNs infer neighbor importance to manipulate the…

Machine Learning · Computer Science 2023-06-06 Soo Yong Lee , Fanchen Bu , Jaemin Yoo , Kijung Shin

Visual navigation is fundamental to autonomous systems, yet generating reliable trajectories in cluttered and uncertain environments remains a core challenge. Recent generative models promise end-to-end synthesis, but their reliance on…

Robotics · Computer Science 2026-02-04 Xubo Luo , Aodi Wu , Haodong Han , Xue Wan , Wei Zhang , Leizheng Shu , Ruisuo Wang

Image-goal navigation (ImageNav) tasks a robot with autonomously exploring an unknown environment and reaching a location that visually matches a given target image. While prior works primarily study ImageNav for ground robots, enabling…

Robotics · Computer Science 2025-12-22 Zichen Yan , Rui Huang , Lei He , Shao Guo , Lin Zhao

Deep reinforcement learning (DRL) methods have demonstrated potential for autonomous navigation and obstacle avoidance of unmanned ground vehicles (UGVs) in crowded environments. Most existing approaches rely on single-frame observation and…

Robotics · Computer Science 2026-01-01 Ruitong Li , Lin Zhang , Yuenan Zhao , Chengxin Liu , Ran Song , Wei Zhang

In audio-visual navigation (AVN) tasks, an embodied agent must autonomously localize a sound source in unknown and complex 3D environments based on audio-visual signals. Existing methods often rely on static modality fusion strategies and…

Artificial Intelligence · Computer Science 2025-09-23 Jia Li , Yinfeng Yu , Liejun Wang , Fuchun Sun , Wendong Zheng

Climate change-driven floods demand advanced forecasting models, yet Graph Neural Networks (GNNs) underutilize river network topology due to tree-like structures causing over-squashing from high node resistance distances. This study…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Hongjun Wang , Jiyuan Chen , Yinqiang Zheng , Xuan Song

The ability to perform effective planning is crucial for building an instruction-following agent. When navigating through a new environment, an agent is challenged with (1) connecting the natural language instructions with its progressively…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Zhiwei Deng , Karthik Narasimhan , Olga Russakovsky

Recently, researchers have explored ML-based Traffic Engineering (TE), leveraging neural networks to solve TE problems traditionally addressed by optimization. However, existing ML-based TE schemes remain impractical: they either fail to…

Networking and Internet Architecture · Computer Science 2026-04-16 Ximeng Liu , Zhuoran Liu , Yingming Mao , Yatao Li , Shizhen Zhao , Xinbing Wang

Graph neural networks (GNNs) have emerged as a powerful tool for graph classification and representation learning. However, GNNs tend to suffer from over-smoothing problems and are vulnerable to graph perturbations. To address these…

Machine Learning · Computer Science 2021-11-01 Yuzhou Chen , Baris Coskunuzer , Yulia R. Gel

The integration of Large Language Models (LLMs) and Graph Neural Networks (GNNs) promises to unify semantic understanding with structural reasoning, yet existing methods typically rely on static, unidirectional pipelines. These approaches…

Information Retrieval · Computer Science 2026-03-23 Jinming Xing , Muhammad Shahzad

Accurate traffic forecasting is a core technology for building Intelligent Transportation Systems (ITS), enabling better urban resource allocation and improved travel experiences. With growing urbanization, traffic congestion has…

Machine Learning · Computer Science 2025-10-21 Chenyang Yu , Xinpeng Xie , Yan Huang , Chenxi Qiu

In view of the problems that existing salient object detection (SOD) methods are prone to losing details, blurring edges, and insufficient fusion of single-modal information in complex scenes, this paper proposes a dynamic uncertainty…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Yuqi Xiong , Wuzhen Shi , Yang Wen , Ruhan Liu