Imitation Learning
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拆电脑比装电脑还难?这只“手术级”机械手正在破解电子垃圾困局
机器人大讲堂· 2025-10-23 14:37
Core Viewpoint - The article discusses the challenges and innovations in the recycling of electronic waste, particularly focusing on the development of a specialized robotic claw, DeGrip, designed for dismantling electronic devices efficiently and effectively [1][26]. Group 1: Technological Challenges - Electronic waste (EOL) dismantling is a crucial part of the circular economy, but it is technically challenging due to the complexity and variability of different manufacturers' products [1]. - Traditional industrial robots excel in assembly but are rarely used in dismantling due to their limited flexibility in confined spaces [2][4]. Group 2: Innovation in Robotics - DeGrip is a newly designed robotic claw that combines small size and high flexibility, allowing it to operate in tight spaces within electronic devices [4][5]. - The claw features three degrees of freedom (DOF), enabling it to perform complex dismantling tasks with precision [5][11]. - The use of a cable-driven mechanism allows for a compact design that can navigate tight spaces while maintaining efficiency [6][7]. Group 3: Simulation and Testing - Prior to physical testing, DeGrip was evaluated in a virtual environment using a digital model of a desktop computer to assess its performance in dismantling tasks [12][20]. - The simulation tasks included removing RAM modules, SSDs, and HDDs from confined spaces, demonstrating DeGrip's adaptability and precision [14][16][18][20]. Group 4: Prototype Development - A physical prototype of DeGrip was created using 3D printing and tested in real-world scenarios, confirming its structural integrity and responsiveness [22][24]. - The prototype's performance validated the reliability of the cable-driven design and its feasibility for practical applications [24]. Group 5: Future Directions - The next phase involves using DeGrip to gather operational data for developing intelligent learning systems, enabling robots to learn autonomous dismantling strategies [26]. - This innovation aims to enhance the efficiency of electronic waste recycling, contributing to a more sustainable circular economy [27].
模仿学习无法真正端到端!DriveDPO:Safety DPO打破模仿学习固有缺陷(中科院最新)
自动驾驶之心· 2025-10-03 03:32
Core Viewpoint - The article discusses the challenges of end-to-end autonomous driving, particularly focusing on the limitations of imitation learning and the introduction of DriveDPO, a safety-oriented policy learning framework that enhances driving safety and reliability [1][7][28]. Summary by Sections Imitation Learning Challenges - Imitation learning can lead to unsafe driving behaviors despite generating trajectories that appear human-like, as it does not account for the safety implications of certain maneuvers [5][11]. - The symmetric loss functions commonly used in imitation learning fail to differentiate between safe and unsafe deviations from human trajectories, leading to potential risks [5][11]. DriveDPO Framework - DriveDPO integrates human imitation signals and rule-based safety scores into a unified strategy distribution for direct policy optimization, addressing the shortcomings of both imitation learning and score-based methods [8][12]. - The framework employs an iterative Direct Preference Optimization (DPO) approach to prioritize trajectories that are both human-like and safe, enhancing the model's responsiveness to safety preferences [8][19]. Experimental Results - Extensive experiments on the NAVSIM benchmark dataset demonstrated that DriveDPO achieved a PDMS (Policy Decision Metric Score) of 90.0, outperforming previous methods by 1.9 and 2.0 points respectively [8][22]. - Qualitative results indicate significant improvements in safety and compliance in complex driving scenarios, showcasing the potential of DriveDPO for safety-critical applications [12][28]. Contributions - The article identifies key challenges in current imitation learning and score-based methods, proposing DriveDPO as a solution that combines unified strategy distillation with safety-oriented DPO for effective policy optimization [12][28]. - The framework's ability to suppress unsafe behaviors while enhancing overall driving performance highlights its potential for deployment in autonomous driving systems [12][28].
L4产业链跟踪系列第三期-头部Robotaxi公司近况跟踪(技术方向)
2025-07-16 06:13
Summary of Conference Call Company and Industry - The conference call primarily discusses advancements in the autonomous driving industry, specifically focusing on a company involved in Level 4 (L4) autonomous driving technology. Key Points and Arguments 1. **Technological Framework**: The company has a modular architecture for its autonomous driving system, which includes perception, prediction, control, and planning. This framework has evolved to incorporate advanced techniques like reinforcement learning and world models, although the core structure remains intact [1][2][3]. 2. **Transition to Large Models**: The industry is shifting from CNN architectures to transformer-based models. The company is gradually replacing its existing models with these new frameworks, which may take longer due to the high baseline performance of their current systems [3][4]. 3. **Data Utilization**: The company emphasizes the importance of both real and simulated data for model training. While real data is primarily used, there is a plan to increasingly incorporate simulated data to address data shortages, especially for control models [8][9][10]. 4. **Learning Techniques**: Imitation learning has been used for scenarios where rule-based approaches fail, while reinforcement learning is applied in end-to-end (E2E) models. The proportion of reinforcement learning used is not significant, indicating a cautious approach to its implementation [11][12]. 5. **Operational Deployment**: The company has deployed several autonomous vehicles in major cities like Beijing and Guangzhou, with plans to expand in Shenzhen and Shanghai. The current fleet consists of a few hundred vehicles [14][21]. 6. **Cost Structure**: The cost of vehicles includes hardware components such as multiple radars and cameras, with estimates suggesting that the total cost could be reduced to around 200,000 yuan [15][19]. 7. **Computational Resources**: The company is facing challenges with computational capacity, particularly with the integration of various models across different chips. There is a focus on optimizing the use of existing resources while planning for future upgrades [19][20]. 8. **Profitability Goals**: The company aims to achieve a break-even point by deploying a fleet of over 10,000 vehicles by 2027 or 2028. Current estimates suggest that achieving profitability may require a fleet size closer to 100,000 vehicles [26]. 9. **Market Positioning**: The company acknowledges competition from other players in the autonomous driving space, particularly in terms of regulatory approvals and operational capabilities. It aims to maintain a competitive edge by leveraging its faster acquisition of commercial licenses [27][28]. Other Important Content - The discussion highlights the ongoing evolution of the autonomous driving technology landscape, with a focus on the balance between technological advancement and operational scalability. The company is committed to addressing challenges in data acquisition, model training, and fleet management to enhance its market position [22][23][30].