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美航空展览惊现“红旗-16仿制品”,军事专家:轮胎都是充气的,意在炒作
Huan Qiu Wang· 2025-08-01 11:36
Group 1 - The U.S. National Guard in Wisconsin is using a replica of the Chinese Hongqi-16 air defense missile system for training fighter pilots [5][7] - The replica is described as a "simulated training device" intended for adversarial reference, with its design being simplistic, including inflatable tires [5][8] - The introduction of this replica reflects a broader shift in U.S. defense planning, indicating an increased focus on Chinese military capabilities [7] Group 2 - The replica is intended to help fifth-generation fighter pilots familiarize themselves with modern surface-to-air missile systems they may encounter in combat scenarios [7] - Military experts suggest that the U.S. is using this model to convey a message of adversarial preparedness to the public [8] - The combination of equipment simulation and media portrayal indicates a Cold War mentality within U.S. defense strategy [8]
cVLA:面向高效相机空间VLA模型的关键位姿预测方法
具身智能之心· 2025-07-06 11:54
Core Insights - The article discusses a new approach to Visual-Language-Action (VLA) models that leverages visual language models (VLMs) for efficient robot trajectory prediction, addressing high training costs and data limitations associated with traditional VLA systems [2][3]. Group 1: Introduction and Background - VLA models integrate visual, language, and interaction data to enable fine-grained perception and action generation, but face challenges such as high computational costs, data scarcity, and evaluation benchmarks [3]. - The proposed method utilizes controllable synthetic datasets for training lightweight VLA systems, which can be applied across various domains, particularly in robotics [3]. Group 2: Technical Methodology - The foundational model is based on the pre-trained VLM PaliGemma2, which predicts key poses of the robot's end effector from real-time images, robot states, and task descriptions [6]. - The system employs a single-step prediction approach to enhance training efficiency, focusing on predicting two key trajectory poses rather than full trajectories [6][8]. - The method extends to few-shot imitation learning, allowing the model to infer tasks from demonstration image-trajectory pairs without requiring fine-tuning on new scene images [8]. Group 3: Data Generation and Evaluation - The training dataset is generated using the ManiSkill simulator, which creates diverse environments and tasks, enhancing the model's ability to generalize to real-world scenarios [9][10]. - Real-world evaluation is conducted using the DROID dataset, which includes various scenes and actions, allowing for a comprehensive assessment of the model's performance [11]. Group 4: Experimental Results - Experiments demonstrate that incorporating depth information significantly improves simulation success rates and reduces failure cases [12]. - The model's performance is evaluated across different datasets, with success rates reported at 70% for the easy version and 28% for the hard version of the CLEVR dataset [16][17]. - The article highlights the importance of camera and scene randomization in achieving robustness in real-world applications [16]. Group 5: Inference Strategies - The article discusses the impact of input image cropping on performance, indicating that precise target localization is crucial for successful robot operations [18]. - Various decoding strategies are evaluated, with the proposed beam-search-NMS method outperforming traditional approaches in terms of accuracy and diversity of predicted trajectories [20][23].
人形机器人优雅漫步,强化学习新成果!独角兽Figure创始人:之前大家吐槽太猛
量子位· 2025-03-26 10:29
Core Viewpoint - The article highlights the advancements in humanoid robots, particularly focusing on Figure's new model, which utilizes reinforcement learning to achieve more natural walking patterns, resembling human movement more closely [3][4][22]. Group 1: Technological Advancements - Figure's new humanoid robot, Figure 02, demonstrates significant improvements in walking, appearing more human-like with a lighter gait and faster speed [4][6]. - The walking control system is trained using reinforcement learning, which allows the robot to learn how to walk like a human through simulated trials [9][14]. - The training process involves high-fidelity physical simulations, enabling the collection of years' worth of data in just a few hours [10][14]. Group 2: Simulation Techniques - The training incorporates domain randomization and high-frequency torque feedback to bridge the gap between simulation and real-world application, allowing the learned strategies to be applied directly to physical robots without additional adjustments [11][18]. - The robots are exposed to various scenarios during training, learning to navigate different terrains and respond to disturbances [15][18]. Group 3: Future Plans and Industry Context - Figure plans to expand this technology to thousands of Figure robots, indicating a significant scaling of their operations [21]. - The article notes a broader trend in the industry, with many companies, including Vivo, launching their own robotics initiatives, reflecting a growing interest in humanoid robots [24][25].