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Recent years have witnessed significant progress in autonomous navigation using reinforcement learning. However, existing approaches largely emphasize reinforcement learning framework design, such as input representations, action spaces,…

Robotics · Computer Science 2026-05-18 Zhefan Xu , Hanyu Jin , Kenji Shimada

While Hybrid Supervised Fine-Tuning (SFT) followed by Reinforcement Learning (RL) has become the standard paradigm for training LLM agents, effective mechanisms for data allocation between these stages remain largely underexplored. Current…

Artificial Intelligence · Computer Science 2026-04-14 Yang Zhao , Yangou Ouyang , Xiao Ding , Hepeng Wang , Bibo Cai , Kai Xiong , Jinglong Gao , Zhouhao Sun , Li Du , Bing Qin , Ting Liu

Action-conditioned robot world models generate future video frames of the manipulated scene given a robot action sequence, offering a promising alternative for simulating tasks that are difficult to model with traditional physics engines.…

Robotics · Computer Science 2026-03-27 Jai Bardhan , Patrik Drozdik , Josef Sivic , Vladimir Petrik

Evaluating the performance of autonomous vehicle planning algorithms necessitates simulating long-tail safety-critical traffic scenarios. However, traditional methods for generating such scenarios often fall short in terms of…

Robotics · Computer Science 2024-08-08 Wei-Jer Chang , Francesco Pittaluga , Masayoshi Tomizuka , Wei Zhan , Manmohan Chandraker

Multi-agent collision-free trajectory planning and control subject to different goal requirements and system dynamics has been extensively studied, and is gaining recent attention in the realm of machine and reinforcement learning. However,…

Robotics · Computer Science 2021-06-03 Salar Asayesh , Mo Chen , Mehran Mehrandezh , Kamal Gupta

This work introduces interactive traffic scenarios in the CARLA simulator, which are based on real-world traffic. We concentrate on tactical tasks lasting several seconds, which are especially challenging for current control methods. The…

Optimizing numerical systems and mechanism design is crucial for enhancing player experience in Massively Multiplayer Online (MMO) games. Traditional optimization approaches rely on large-scale online experiments or parameter tuning over…

Artificial Intelligence · Computer Science 2025-12-03 Ran Zhang , Kun Ouyang , Tiancheng Ma , Yida Yang , Dong Fang

Traffic intersections are important scenes that can be seen almost everywhere in the traffic system. Currently, most simulation methods perform well at highways and urban traffic networks. In intersection scenarios, the challenge lies in…

Robotics · Computer Science 2023-04-06 Pei Lv , Xinming Pei , Xinyu Ren , Yuzhen Zhang , Chaochao Li , Mingliang Xu

Developing an automated driving system capable of navigating complex traffic environments remains a formidable challenge. Unlike rule-based or supervised learning-based methods, Deep Reinforcement Learning (DRL) based controllers eliminate…

Machine Learning · Computer Science 2025-01-28 Zhihao Zhang , Ekim Yurtsever , Keith A. Redmill

Simulation-based reinforcement learning (RL) has significantly advanced humanoid locomotion tasks, yet direct real-world RL from scratch or adapting from pretrained policies remains rare, limiting the full potential of humanoid robots.…

Robotics · Computer Science 2025-08-27 Kaizhe Hu , Haochen Shi , Yao He , Weizhuo Wang , C. Karen Liu , Shuran Song

Applying reinforcement learning to autonomous driving has garnered widespread attention. However, classical reinforcement learning methods optimize policies by maximizing expected rewards but lack sufficient safety considerations, often…

Robotics · Computer Science 2025-03-28 Bo Leng , Ran Yu , Wei Han , Lu Xiong , Zhuoren Li , Hailong Huang

Numerous solutions are proposed for the Traffic Signal Control (TSC) tasks aiming to provide efficient transportation and mitigate congestion waste. In recent, promising results have been attained by Reinforcement Learning (RL) methods…

Artificial Intelligence · Computer Science 2024-01-24 Longchao Da , Minquan Gao , Hao Mei , Hua Wei

Reinforcement learning (RL) has improved guided image generation with diffusion models by directly optimizing rewards that capture image quality, aesthetics, and instruction following capabilities. However, the resulting generative policies…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Owen Oertell , Jonathan D. Chang , Yiyi Zhang , Kianté Brantley , Wen Sun

Large language models (LLMs) can face factual limitations when responding to time-sensitive queries about recent events that arise after their knowledge thresholds in the training corpus. Existing search-augmented approaches fall into two…

Information Retrieval · Computer Science 2025-06-11 Wentao Shi , Yiqing Shen

Traffic simulation is important for transportation optimization and policy making. While existing simulators such as SUMO and MATSim offer fully-featured platforms and utilities, users without too much knowledge about these platforms often…

Artificial Intelligence · Computer Science 2025-12-25 Yuwei Du , Jun Zhang , Jie Feng , Zhicheng Liu , Jian Yuan , Yong Li

Reinforcement learning (RL) has shown promise in traffic signal control (TSC). However, its reliance on predefined states limits responsiveness to observable open-world events that are absent from training data. IoT-enabled intersections…

Artificial Intelligence · Computer Science 2026-05-29 Aoyu Pang , Maonan Wang , Yuejiao Xie , Chung Shue Chen , Zhiwei Yang , Man-On Pun

This study introduces a novel approach to autonomous motion planning, informing an analytical algorithm with a reinforcement learning (RL) agent within a Frenet coordinate system. The combination directly addresses the challenges of…

Robotics · Computer Science 2024-07-31 Rainer Trauth , Alexander Hobmeier , Johannes Betz

Modeling of real-world biological multi-agents is a fundamental problem in various scientific and engineering fields. Reinforcement learning (RL) is a powerful framework to generate flexible and diverse behaviors in cyberspace; however,…

Artificial Intelligence · Computer Science 2023-12-20 Keisuke Fujii , Kazushi Tsutsui , Atom Scott , Hiroshi Nakahara , Naoya Takeishi , Yoshinobu Kawahara

OpenAI's recent introduction of Reinforcement Fine-Tuning (RFT) showcases the potential of reasoning foundation model and offers a new paradigm for fine-tuning beyond simple pattern imitation. This technical report presents \emph{OpenRFT},…

Artificial Intelligence · Computer Science 2024-12-24 Yuxiang Zhang , Yuqi Yang , Jiangming Shu , Yuhang Wang , Jinlin Xiao , Jitao Sang

Reinforcement learning (RL) has attracted increasing interest for adaptive traffic signal control due to its model-free ability to learn control policies directly from interaction with the traffic environment. However, several challenges…

Machine Learning · Computer Science 2026-03-17 Dickens Kwesiga , Angshuman Guin , Khaled Abdelghany , Michael Hunter