模仿学习

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具身智能领域,全球Top50国/华人图谱(含具身智能赛道“师徒关系图”)
Robot猎场备忘录· 2025-06-30 08:09
Core Viewpoint - The development of embodied intelligence technology is a leading trend in the AI and robotics sector, involving advanced techniques such as large language models (LLM), visual multimodal models (VLM), reinforcement learning, deep reinforcement learning, and imitation learning [1]. Group 1: Embodied Intelligence Technology - Embodied intelligence technology encompasses various cutting-edge techniques, including LLM, VLM, reinforcement learning, deep reinforcement learning, and imitation learning [1]. - The evolution of humanoid robots has progressed from model-based control algorithms to dynamic model control and optimal control algorithms, and currently to simulation combined with reinforcement learning [1]. - The most frequently mentioned concepts in humanoid robotics companies are imitation learning and reinforcement learning, primarily researched by academic and leading tech company teams [1]. Group 2: Academic Contributions - UC Berkeley and Stanford University are leading institutions in the AI and robotics research field, with notable alumni contributing to the embodied intelligence sector [2]. - Four prominent figures from UC Berkeley, known as the "Four Returnees," have transitioned from Tsinghua University to UC Berkeley and then to entrepreneurial ventures in embodied intelligence [2]. Group 3: Notable Individuals in the Field - Wang He and Lu Ce Wu are key representatives of individuals who graduated from Stanford University and are now involved in the embodied intelligence startup scene in China [3]. - Wang He, a 2021 PhD graduate from Stanford, is now an assistant professor at Peking University and the founder of a leading humanoid robotics startup [3]. - Lu Ce Wu, a postdoctoral researcher at Stanford, is a co-founder and chief scientist of a unicorn collaborative robotics company and a founder of an embodied intelligence startup [3]. Group 4: Global Talent Pool - The majority of the top 50 Chinese individuals in the embodied intelligence field have educational backgrounds from prestigious institutions such as UC Berkeley, Stanford, MIT, and CMU, often under the mentorship of industry leaders [4]. - A detailed mapping of the top 50 Chinese talents in the field includes their educational history, research directions, and current positions in leading tech companies or startups [5].
保姆级分享!ALOHA:低成本双臂机器人结合模仿学习经典工作
具身智能之心· 2025-06-27 08:36
Core Viewpoint - The article discusses the ALOHA system, a low-cost open-source hardware system designed for bimanual teleoperation, emphasizing its potential to perform precise manipulation tasks using affordable components and advanced learning algorithms [4][5][8]. Group 1: ALOHA System Overview - ALOHA is a low-cost system costing less than $20,000, designed to enable precise manipulation tasks using two low-cost robotic arms and 3D-printed components [7][8]. - The system utilizes end-to-end imitation learning to perform tasks by collecting real demonstrations from a custom remote operation interface [8][10]. Group 2: Challenges in Imitation Learning - Imitation learning faces challenges such as compounding errors, where small prediction errors accumulate, leading to significant deviations from expert behavior [9][12]. - The article highlights the difficulty of modeling complex physical interactions in tasks, suggesting that learning policies directly from demonstrations is more effective than modeling the entire environment [9][12]. Group 3: Action Chunking with Transformers (ACT) - The ACT algorithm addresses compounding errors by predicting sequences of actions rather than single steps, improving performance in tasks with high complexity [12][13]. - The algorithm has demonstrated an 80-90% success rate in tasks with only 10 minutes of demonstration data [12]. Group 4: Hardware Specifications - The ALOHA system is built on principles of low cost, versatility, user-friendliness, repairability, and ease of construction, utilizing ViperX 6-DoF robotic arms [17][18]. - The system is designed to perform various tasks, including precise, contact-based, and dynamic operations [20][22]. Group 5: Data Collection and Training - The system collects human demonstrations to train the policy, focusing on the leader robot's joint positions to capture the operator's intent and force feedback [23][25]. - The training process involves using a conditional variational autoencoder (CVAE) to model human data and improve learning from noisy demonstrations [33][55]. Group 6: Experimental Results - The article presents experimental results showing that action chunking and temporal ensembling significantly enhance the performance of the ACT algorithm [52][54]. - The necessity of high-frequency control is emphasized, with findings indicating that a control frequency of 50Hz allows for more precise and agile task execution [56].
SwitchVLA:无需额外数据采集,即可实时动态任务切换的轻量化VLA模型
自动驾驶之心· 2025-06-24 02:54
Core Viewpoint - The article introduces SwitchVLA, a lightweight and data-efficient method for dynamic task perception and decision-making, addressing the challenges of task switching in multi-task VLA models, achieving superior performance compared to existing methods [3][22]. Group 1: Introduction - Current mainstream multi-task VLA models struggle with task switching, defined as "Task Switching," where the model's ability to adapt to new tasks mid-execution is limited [3][5]. - SwitchVLA employs an Execution-Aware mechanism and a lightweight network architecture to facilitate task switching without the need for additional data collection [3][10]. Group 2: Background - Multi-task VLA training typically involves independent data collection for each task, leading to challenges in seamlessly transitioning between tasks [5]. - The inability of existing SOTA VLA methods to effectively handle task switching is highlighted, emphasizing the need for improved solutions [5][10]. Group 3: Methodology - SwitchVLA addresses two core problems: representing task switching without extra data collection and training an end-to-end imitation learning model that autonomously judges based on current conditions [10][12]. - The model improves task switching representation by concatenating previous task, current task, and the previous task's stage, enhancing the model's ability to perceive task transitions [12][13]. - A simplified training process categorizes tasks into three stages: before contact, during contact, and after contact, allowing for effective task switching without additional data [15][16]. Group 4: Experimental Results - Experiments demonstrate that SwitchVLA outperforms existing methods in task switching scenarios while maintaining comparable performance in single-task settings [20][22]. - The analysis of task switching failures reveals that the proposed method effectively mitigates common failure causes [20]. Group 5: Conclusion and Future Directions - SwitchVLA is positioned as a significant advancement in dynamic task management, with plans for further iterations and deployment in humanoid robots for applications in flexible industrial production and personalized commercial services [22][23].
SwitchVLA:无需额外数据采集,即可实时动态任务切换的轻量化VLA模型
具身智能之心· 2025-06-23 13:54
Core Viewpoint - The article introduces SwitchVLA, a lightweight and data-efficient dynamic task perception and decision-making method designed to address the challenges of task switching in multi-task VLA models, significantly outperforming existing state-of-the-art methods in task switching scenarios [3][18]. Group 1: Introduction - Current mainstream multi-task VLA models struggle with task switching, defined as the ability to switch from one task to another seamlessly during execution [3][5]. - The proposed Execution-Aware mechanism allows for a minimal representation of task switching, utilizing a lightweight network architecture and new training paradigms without the need for additional data collection [3][5]. Group 2: Background - Multi-task VLA models typically rely on Imitation Learning, where tasks are independently collected, leading to challenges in maintaining consistency during task transitions [5]. - The inability of existing methods to handle task switching effectively highlights a significant gap in current VLA capabilities [5]. Group 3: Methodology - SwitchVLA addresses two core issues: representing task switching without additional data collection and training an end-to-end imitation learning model that autonomously makes decisions based on current conditions [6][8]. - The model improves task switching representation by concatenating previous task, current task, and the previous task's stage, enhancing the model's ability to perceive task transitions [8][9]. Group 4: Training Process Improvements - The training process simplifies tasks into three stages: before contact, during contact, and after contact, with specific actions defined for each stage [12]. - The method allows for the training of forward, rollback, and advance actions without the need for additional data collection, demonstrating the model's efficiency [13]. Group 5: Experimental Results - Experiments show that SwitchVLA achieves comparable performance to mainstream methods in single-task scenarios while significantly outperforming them in task switching tasks [16]. - The analysis of task switching failures identified four main types, indicating that the proposed method effectively mitigates these issues [16]. Group 6: Conclusion and Future Work - SwitchVLA is positioned as a significant advancement in dynamic task management, maintaining state-of-the-art performance in single tasks while excelling in task switching [18]. - Future iterations of SwitchVLA will be deployed in TianGong humanoid robots, enhancing capabilities in flexible industrial production and personalized commercial services [19].
机器人系列报告之二十七:控制器提供具身智能基座,数据飞轮驱动模型迭代
Shenwan Hongyuan Securities· 2025-05-15 15:20
Investment Rating - The report maintains a positive outlook on the humanoid robot industry, emphasizing the importance of software development for commercialization [3][4]. Core Insights - The report identifies that the hardware maturity of humanoid robots is currently higher than that of software, with software being the key to commercialization. It highlights the need for advancements in algorithms, data, and control systems to drive the industry forward [3][5][6]. Summary by Sections 1. Algorithms: The Core of Embodied Intelligence - The algorithm framework is divided into two levels: the upper "brain" focuses on task-level planning and decision-making, while the lower "cerebellum" handles real-time motion planning and joint control [3][11][18]. - The report discusses the evolution of control algorithms, noting a shift from traditional methods to modern approaches like reinforcement learning (RL) and imitation learning (IL) [3][19][29]. - The VLA (Vision-Language-Action) model is highlighted as a significant advancement in upper-level control, enabling robots to understand and execute tasks through natural language processing [3][36][40]. 2. Data: The Foundation of Algorithm Learning - Data quality and diversity are crucial for algorithm performance, with sources categorized into real data, synthetic data, and web data. Real data is the most accurate but least abundant [3][74][76]. - The report emphasizes the importance of remote operation and motion capture technologies for collecting high-quality real data [3][79]. 3. Control Systems: The Foundation of Embodied Intelligence - The control system is described as the "brain" of humanoid robots, consisting of hardware (SoC chips, CPUs, GPUs, NPUs) and software components [3][3][3]. - The report notes that the industry lacks a unified consensus on the structure of the "brain" and "cerebellum" in humanoid robots, which are essential for executing complex algorithms and tasks [3][3][3]. 4. Investment Opportunities - The report identifies several key companies in the humanoid robot industry worth monitoring, including: - Controller segment: Tianzhun Technology, Zhiwei Intelligent, Desay SV [4][4]. - Motion control technology: Huichuan Technology, Xinjie Electric, Leisai Intelligent, Gokong Technology, Tosida [4][4]. - Chip manufacturers: Rockchip, Horizon Robotics [4][4]. - Data collection equipment: Lingyun Optical, Aofei Entertainment [4][4].
边学边练,推理觉醒:LUFFY让强化学习即学即用!
机器之心· 2025-05-05 03:40
破解 "只学不练" 与 "只练不学" 的难题 想象你准备参加一场高水平的数学竞赛。如果你只是反复背诵往年题目的标准答案,从不亲自动手解题,那么一旦遇到新题型,很可能束手无策;反过来,如果 你闭门造车,只凭自己反复试错而从不参考老师和高手的解题经验,进步又会异常缓慢。这就好比 AI 模型 训练中长期存在的两种极端: 「 模仿学习 」 只顾照搬 示范却缺乏自我实践, 「强化学习 」 一味自我探索却不借鉴现有经验。 这两种 「只学不练 」 和 「只练不学 」 的策略各有弊端:前者往往学得快但 泛化差 ,后者可能探索勤但 效率低 。那么,有没有两全其美的办法,让模型既能借 鉴高手经验又能保持自主探索?最近,上海 AI 实验室联合西湖大学、南京大学和香港中文大学的研究团队提出了一种全新的强化学习范式: LUFFY(Learning to reason Under oFF-policY guidance) 。 论文链接:https://arxiv.org/abs/2504.14945 代码仓库:https://github.com/ElliottYan/LUFFY 图表 1. 在六项竞赛级数学推理基准上的整体表现。在 A ...
对话智元首席科学家罗剑岚:中国的具身智能圈比美国更加“务实”
Hu Xiu· 2025-04-04 06:03
Core Insights - The article discusses the return of Luo Jianlan to China and his role as the Chief Scientist at Zhiyuan, focusing on the development of embodied intelligence, a field that is increasingly attracting younger talent in China [1][3]. Group 1: Background and Career - Luo Jianlan has a strong academic background, having spent eight years in academic research after obtaining his PhD and postdoctoral degree from Berkeley, and previously worked at Google X and Google DeepMind [1]. - He is a proponent of Reinforcement Learning (RL) over Immitation Learning (IL), arguing that the uncertainty in the real world makes achieving high accuracy in IL nearly impossible [2]. Group 2: Research Center and Philosophy - At Zhiyuan, Luo Jianlan established the "Zhiyuan Embodied Research Center," which aims to bridge the gap between fundamental research and industrial application, emphasizing problem-driven research rather than merely publishing papers [3][14]. - The center is designed to be a middle platform that connects basic research with real-world deployment, avoiding strict boundaries between research and application [14][15]. Group 3: Industry Comparison - The article highlights a significant difference between the U.S. and China in the field of embodied intelligence, with the U.S. focusing heavily on basic research while China is more pragmatic and faster in commercializing technology [4][11]. - Luo Jianlan notes that the Chinese environment is more conducive to hardware development and data acquisition, which benefits the application of embodied intelligence [11][12]. Group 4: Challenges and Future Directions - The main challenge in the field remains manipulation, which involves accurately responding to the complexities and uncertainties of the external world [6][21]. - Luo Jianlan suggests that the future of embodied intelligence should focus on creating useful robots that can solve multiple tasks rather than striving for a universal robot [21].