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Recently, safe reinforcement learning (RL) with the actor-critic structure for continuous control tasks has received increasing attention. It is still challenging to learn a near-optimal control policy with safety and convergence…

机器学习 · 计算机科学 2024-02-06 Xinglong Zhang , Yaoqian Peng , Biao Luo , Wei Pan , Xin Xu , Haibin Xie

Expansion of today's underwater scenarios and missions necessitates the requestion for robust decision making of the Autonomous Underwater Vehicle (AUV); hence, design an efficient decision making framework is essential for maximizing the…

机器人学 · 计算机科学 2016-12-06 Somaiyeh Mahmoud Zadeh , David M. W Powers , Karl Sammut , Amir Mehdi Yazdani

Retriever Augmented Generation (RAG) systems have become pivotal in enhancing the capabilities of language models by incorporating external knowledge retrieval mechanisms. However, a significant challenge in deploying these systems in…

计算与语言 · 计算机科学 2024-06-06 Masha Belyi , Robert Friel , Shuai Shao , Atindriyo Sanyal

We introduceGraphGPT, a novel self-supervised generative pre-trained model for graph learning based on the Graph Eulerian Transformer (GET). First, we propose GET, which combines a standard transformer encoder or decoder architecture with…

机器学习 · 计算机科学 2025-06-09 Qifang Zhao , Weidong Ren , Tianyu Li , Hong Liu , Xingsheng He , Xiaoxiao Xu

We propose a computationally efficient approach to safe reinforcement learning (RL) for frequency regulation in power systems with high levels of variable renewable energy resources. The approach draws on set-theoretic control techniques to…

系统与控制 · 电气工程与系统科学 2022-03-24 Daniel Tabas , Baosen Zhang

Vision Transformers (ViT) and Visual Prompt Tuning (VPT) achieve state-of-the-art performance with improved efficiency in various computer vision tasks. This suggests a promising paradigm shift of adapting pre-trained ViT models to…

机器学习 · 计算机科学 2024-02-27 Wenlong Deng , Christos Thrampoulidis , Xiaoxiao Li

Generative AI increasingly supports scientific inference, from protein structure prediction to weather forecasting. Yet its distinctive failure mode, hallucination, raises epistemic alarm bells. I argue that this failure mode can be…

计算机与社会 · 计算机科学 2026-01-14 Charles Rathkopf

Offline reinforcement learning (RL) is a challenging task, whose objective is to learn policies from static trajectory data without interacting with the environment. Recently, offline RL has been viewed as a sequence modeling problem, where…

机器学习 · 计算机科学 2023-03-08 Shengchao Hu , Li Shen , Ya Zhang , Dacheng Tao

The success of surveillance applications involving small unmanned aerial vehicles (UAVs) depends on how long the limited on-board power would persist. To cope with this challenge, alternative renewable sources of lift are sought. One…

机器人学 · 计算机科学 2026-02-16 Houssem Eddine Mohamadi , Nadjia Kara

In this paper, we employ multiple UAVs to accelerate data transmissions from ground users (GUs) to a remote base station (BS) via the UAVs' relay communications. The UAVs' intermittent information exchanges typically result in delays in…

信息论 · 计算机科学 2026-03-24 Che Chen , Lanhua Li , Shimin Gong , Yu Zhao , Yuming Fang , Dusit Niyato

In this paper, we introduce a novel framework consisting of hybrid bit-level and generative semantic communications for efficient downlink image transmission within space-air-ground integrated networks (SAGINs). The proposed model comprises…

信息论 · 计算机科学 2025-05-27 Chong Huang , Xuyang Chen , Gaojie Chen , Pei Xiao , Geoffrey Ye Li , Wei Huang

This paper proposes a robust transient stability constrained optimal power flow problem that addresses renewable uncertainties by the coordination of generation re-dispatch and power flow router (PFR) tuning.PFR refers to a general type of…

系统与控制 · 电气工程与系统科学 2020-06-02 Tianlun Chen , Albert Y. S. Lam , Yue Song , David J. Hill

Predicting future trajectories of traffic agents accurately holds substantial importance in various applications such as autonomous driving. Previous methods commonly infer all future steps of an agent either recursively or simultaneously.…

计算机视觉与模式识别 · 计算机科学 2024-05-01 Zhanwei Zhang , Zishuo Hua , Minghao Chen , Wei Lu , Binbin Lin , Deng Cai , Wenxiao Wang

Large Language Models (LLMs) have shown remarkable effectiveness in various general-domain natural language processing (NLP) tasks. However, their performance in transportation safety domain tasks has been suboptimal, primarily attributed…

计算与语言 · 计算机科学 2023-07-31 Ou Zheng , Mohamed Abdel-Aty , Dongdong Wang , Chenzhu Wang , Shengxuan Ding

Federated Prompt Learning (FPL) offers a parameter-efficient solution for collaboratively training large models, but its performance is severely hindered by data heterogeneity, which causes locally trained prompts to become biased. Existing…

机器学习 · 计算机科学 2025-12-09 Fei Luo , Ziwei Zhao , Mingxuan Wang , Duoyang Li , Zhe Qian , Jiayi Tuo , Chenyue Zhou , Yanbiao Ma

In this paper we present a learning-based tracking controller based on Gaussian processes (GP) for a fault-tolerant hexarotor in a recovery maneuver. In particular, to estimate certain uncertainties that appear in a hexacopter vehicle with…

系统与控制 · 电气工程与系统科学 2022-02-28 Leonardo J. Colombo , Manuela Gamonal Fernandez , Juan I. Giribet

Planning safe trajectories under uncertain and dynamic conditions makes the autonomous driving problem significantly complex. Current sampling-based methods such as Rapidly Exploring Random Trees (RRTs) are not ideal for this problem…

机器人学 · 计算机科学 2020-11-11 Kaleb Ben Naveed , Zhiqian Qiao , John M. Dolan

This paper introduces a new transformer-based model for the problem of travel time estimation. The key feature of the proposed GCT-TTE architecture is the utilization of different data modalities capturing different properties of an input…

人工智能 · 计算机科学 2023-10-17 Vladimir Mashurov , Vaagn Chopurian , Vadim Porvatov , Arseny Ivanov , Natalia Semenova

As renewable energy sources replace traditional power sources (such as thermal generators), uncertainty grows while there are fewer controllable units. To reduce operational risks and avoid frequent real-time emergency controls, a…

最优化与控制 · 数学 2022-07-04 Yue Chen , Wei Wei

Unmanned Aerial Vehicles (UAVs), although adept at aerial surveillance, are often constrained by limited battery capacity. By refueling on slow-moving Unmanned Ground Vehicles (UGVs), their operational endurance can be significantly…