Reinforcement Learning
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最强人才接连被挖,创业大佬离开 OpenAI 后说了实话:7 周硬扛出 Codex,无统一路线、全靠小团队猛冲
AI前线· 2025-07-16 05:08
Core Insights - The article discusses the recent departure of key researchers from OpenAI to Meta's newly established superintelligence lab, highlighting the competitive landscape in AI research and talent acquisition [1][2][3] - It provides a personal perspective on the internal culture and operational dynamics at OpenAI, emphasizing the unique environment that fosters innovation and rapid project execution [3][4][10] Group 1: OpenAI's Internal Culture - OpenAI operates as a cluster of small teams rather than a centralized organization, allowing for flexibility and rapid execution of projects without a strict roadmap [3][11] - The company has a strong emphasis on bottom-up decision-making, where good ideas can come from any employee, and the focus is on action rather than extensive planning [11][12] - OpenAI's culture encourages a high degree of autonomy among researchers, leading to a dynamic environment where projects can be initiated and developed quickly [12][18] Group 2: Talent Movement and Industry Dynamics - The movement of researchers like Jason Wei and Hyung Won Chung from OpenAI to Meta raises questions about the internal environment at OpenAI and the factors influencing talent retention [1][2] - The article reflects on the competitive nature of the AI industry, particularly among leading firms like OpenAI, Meta, and Google, each pursuing different strategies in the race towards AGI [33] Group 3: Project Execution and Innovation - The Codex project exemplifies OpenAI's ability to deliver significant products in a short timeframe, with the team completing the project in just seven weeks [26][27] - OpenAI's operational model is likened to a research lab, where innovation is prioritized, and the focus is on creating impactful consumer applications while maintaining a commitment to safety and ethical considerations [15][16][18]
倒计时2天,即将开课啦!从0基础到强化学习,再到sim2real
具身智能之心· 2025-07-12 13:59
Core Viewpoint - The article discusses the rapid advancements in embodied intelligence, highlighting its potential to revolutionize various industries by enabling robots to understand language, navigate complex environments, and make intelligent decisions [1]. Group 1: Embodied Intelligence Technology - Embodied intelligence aims to integrate AI systems with physical capabilities, allowing them to perceive and interact with the real world [1]. - Major tech companies like Tesla, Boston Dynamics, OpenAI, and Google are competing in this transformative field [1]. - The potential applications of embodied intelligence span manufacturing, healthcare, service industries, and space exploration [1]. Group 2: Technical Challenges - Achieving true embodied intelligence presents unprecedented technical challenges, requiring advanced algorithms and a deep understanding of physical simulation, robot control, and perception fusion [2]. Group 3: Role of MuJoCo - MuJoCo (Multi-Joint dynamics with Contact) is identified as a critical technology for embodied intelligence, serving as a high-fidelity simulation engine that bridges the virtual and real worlds [3]. - It allows researchers to create realistic virtual robots and environments, enabling millions of trials and learning experiences without risking expensive hardware [5]. - MuJoCo's advantages include high simulation speed, the ability to test extreme scenarios safely, and effective transfer of learned strategies to real-world applications [5]. Group 4: Research and Industry Adoption - MuJoCo has become a standard tool in both academia and industry, with major companies like Google, OpenAI, and DeepMind utilizing it for robot research [7]. - Mastery of MuJoCo positions entities at the forefront of embodied intelligence technology [7]. Group 5: Practical Training and Curriculum - A comprehensive MuJoCo development course has been created, focusing on practical applications and theoretical foundations within the embodied intelligence technology stack [9]. - The course includes project-driven learning, covering topics from physical simulation principles to deep reinforcement learning and Sim-to-Real transfer techniques [9][10]. - Six progressive projects are designed to enhance understanding and application of various technical aspects, ensuring a solid foundation for future research and work [14][15]. Group 6: Expected Outcomes - Upon completion of the course, participants will gain a complete embodied intelligence technology stack, enhancing their technical, engineering, and innovative capabilities [25][26]. - Participants will develop skills in building complex robot simulation environments, understanding core reinforcement learning algorithms, and applying Sim-to-Real transfer techniques [25].
前 OpenAI 研究员 Kevin Lu:别折腾 RL 了,互联网才是让大模型进步的关键
Founder Park· 2025-07-11 12:07
Core Viewpoint - The article emphasizes that the internet is the key technology driving the advancement of artificial intelligence, rather than focusing solely on model architectures like Transformers [1][5][55]. Group 1: Importance of the Internet - The internet provides a rich and diverse data source that is essential for training AI models, enabling scalable deployment and natural learning pathways [1][5][54]. - Without the internet, even advanced models like Transformers would lack the necessary data to perform effectively, highlighting the critical role of data quality and quantity [28][30]. Group 2: Critique of Current Research Focus - The article critiques the current emphasis on optimizing model architectures and manual dataset creation, arguing that these approaches are unlikely to yield significant improvements in model capabilities [1][19][55]. - It suggests that researchers should shift their focus from deep learning optimizations to exploring new methods of data consumption, particularly leveraging the internet [16][17]. Group 3: Data Paradigms - The article outlines two main paradigms in data consumption: the compute-bound era and the data-bound era, indicating a shift in focus from algorithmic improvements to data availability [11][13]. - It argues that the internet's vast array of sequence data is perfectly suited for next-token prediction, which is a fundamental aspect of many AI models [17][22]. Group 4: Role of Reinforcement Learning - While reinforcement learning (RL) is seen as a necessary condition for achieving advanced AI, the article points out the challenges in obtaining high-quality reward signals for RL applications [55][61]. - The article posits that the internet serves as a complementary resource for next-token prediction, which is crucial for RL to thrive [55][56]. Group 5: Future Directions - The article calls for a reevaluation of how AI research is conducted, suggesting that a collaborative approach between product development and research could lead to more meaningful advancements in AI [35][54]. - It emphasizes the need for diverse and economically viable data sources to support the development of robust AI systems, indicating that user engagement is vital for data contribution [51][54].
奖励模型终于迎来预训练新时代!上海AI Lab、复旦POLAR,开启Scaling新范式
机器之心· 2025-07-10 04:26
Core Viewpoint - The article discusses the limitations of current reward modeling methods in reinforcement learning, particularly in the context of large language models (LLMs), and introduces a new paradigm called POLAR that aims to enhance scalability and generalization in reward modeling [2][3][5]. Group 1: Current Reward Modeling Methods - Preference-based Reward Modeling relies on high-quality preference data, which is costly and difficult to scale, and struggles with generalization and susceptibility to reward hacking [3][4]. - Rule-based Verifier methods provide accurate reward signals for verifiable tasks but fail to extend to more general scenarios like open-domain dialogue and complex interactions [3][4]. Group 2: Introduction of POLAR - POLAR, developed by a team from Shanghai AI Lab and Fudan University, utilizes Policy Discriminative Learning to decouple from absolute preferences, allowing for efficient scaling and strong generalization capabilities [5][9]. - The training process of POLAR involves measuring the "distance" between candidate strategies and optimal strategies, providing a relative reward signal that does not depend on human-annotated preferences [9][10]. Group 3: Training Methodology - POLAR's pre-training corpus is constructed through automated data synthesis, sampling from LLM pre-training data and using a large pool of models for trajectory sampling [14][15]. - The pre-training objective employs Bradley-Terry Loss to assign higher rewards to trajectories generated by similar strategies, effectively modeling the differences in strategy distributions [14][15]. Group 4: Performance and Generalization - POLAR demonstrates superior performance in preference evaluation, outperforming state-of-the-art reward models by significant margins in various tasks, including STEM [33]. - In reinforcement fine-tuning (RFT) experiments, models fine-tuned with POLAR show an average improvement of 9.0% over initial results, highlighting its effectiveness in enhancing LLM capabilities [34]. Group 5: Scaling Effects - POLAR exhibits scaling laws similar to LLM Next Token Prediction, indicating that increased computational resources lead to improved reward model performance [35]. - The validation loss decreases in a power-law relationship with the increase in model parameters and training compute, suggesting the potential for building more powerful and generalizable reward models [35]. Conclusion - POLAR represents a novel and scalable approach to reward modeling, offering new possibilities for LLM post-training and addressing the challenges in reinforcement learning [37].
两个华人 AI 分别融了数千万美金:创始人都来自 Meta
投资实习所· 2025-07-09 05:42
Core Insights - The article highlights the emergence of AI products developed by Chinese teams, particularly focusing on Pokee AI, which has successfully raised $12 million in seed funding aimed at automating enterprise workflows [1][12]. Group 1: Company Overview - Pokee AI is led by Bill Zhu, a former head of the reinforcement learning group at Meta, and aims to automate online workflows for users by integrating AI functionalities into existing tools and services [1][11]. - The funding round was led by Point72 Ventures, with participation from Qualcomm, Samsung, and other notable investors, indicating strong market interest and confidence in the product [1][12]. Group 2: Product Features - Pokee AI integrates AI capabilities into various platforms such as Google Workspace, Meta platforms, LinkedIn, and more, allowing users to automate tasks without switching between different tools [2][3]. - The product targets three core scenarios: AI + Productivity, AI + Social Media, and AI + Research & Engineering, addressing common pain points in workflow automation [9]. Group 3: Technology and Approach - Unlike many AI agents that rely on large language models (LLMs), Pokee AI utilizes reinforcement learning (RL) to tackle the execution of complex tasks, which is seen as a significant advantage [6][11]. - The RL approach allows the AI to learn from interactions with the environment, improving its decision-making and execution capabilities, achieving over 97% accuracy in selecting from thousands of tools [11]. Group 4: Market Context - The article notes a growing trend among Chinese AI teams to create innovative solutions for enterprise-level automation, with other products also securing significant funding and market traction [12][15]. - The focus on automating repetitive tasks and enhancing productivity reflects a broader industry shift towards integrating AI into everyday business processes [8][12].
DeepSeek 复盘:128 天后 ,为何迟迟推迟发布——SemiAnalysis
2025-07-07 15:45
Summary of DeepSeek's Impact on AI Market Industry Overview - The document discusses the AI industry, specifically focusing on DeepSeek, a Chinese large language model (LLM) that has recently launched its R1 model, which competes with OpenAI's offerings [4][7]. Key Points and Arguments 1. **Market Entry and Pricing Strategy** - DeepSeek R1 was launched at a competitive price of $0.55 input and $2.1 output, undercutting OpenAI's pricing by 80% [4][8]. - Despite initial market share growth, DeepSeek's user momentum has declined, indicating challenges in maintaining its competitive edge [8][9]. 2. **User Engagement and Traffic Trends** - After the launch, DeepSeek experienced a spike in consumer app traffic, but this growth has not sustained compared to other AI applications [8]. - Traffic for DeepSeek's own web browser has decreased, while third-party hosted instances of DeepSeek have seen a nearly 20x increase in usage [10][13]. 3. **Tokenomics and Performance Trade-offs** - DeepSeek's pricing strategy is influenced by its tokenomics, which involves trade-offs between latency, throughput, and context window size [17][19]. - The model's latency is a significant drawback, as users experience longer wait times for responses compared to competitors [22]. - DeepSeek's context window is smaller than that of competitors, limiting its effectiveness in complex tasks like coding [24]. 4. **Batching and Resource Allocation** - DeepSeek employs batching strategies to minimize costs, which results in higher latency and lower throughput for users [27][28]. - The company prioritizes internal research and development over user experience, focusing on achieving artificial general intelligence (AGI) [27]. 5. **Competitive Landscape** - Other AI providers, such as Anthropic and Google, are leveraging their compute resources to enhance user experience and performance, contrasting with DeepSeek's approach [29][30]. - Anthropic's recent developments in coding applications have outpaced DeepSeek, highlighting the competitive pressure in the AI market [30][41]. 6. **Future Prospects and Challenges** - There are rumors regarding delays in the release of DeepSeek's R2 model, attributed to export controls and operational changes within the company [54][55]. - Despite these challenges, DeepSeek continues to innovate, with recent updates showing improvements in coding performance [55][56]. Additional Important Insights - The document emphasizes the importance of compute resources in the AI industry, noting that companies like Amazon are investing heavily in AI infrastructure [37][38]. - The shift towards viewing tokens as a service rather than a bundled subscription model is gaining traction, with more companies emulating Anthropic's approach [44]. - The competitive dynamics in the AI market are rapidly evolving, with cost and user experience becoming critical factors for success [47][53].
MuJoCo具身智能实战:从零基础到强化学习与Sim2Real
具身智能之心· 2025-07-07 09:20
Core Viewpoint - The article discusses the unprecedented advancements in AI, particularly in embodied intelligence, which is transforming the relationship between humans and machines. Major tech companies are competing in this revolutionary field, which has the potential to significantly impact various industries such as manufacturing, healthcare, and space exploration [1][2]. Group 1: Embodied Intelligence - Embodied intelligence is characterized by machines that can understand language commands, navigate complex environments, and make intelligent decisions in real-time [1]. - Leading companies like Tesla, Boston Dynamics, OpenAI, and Google are actively developing technologies in this area, emphasizing the need for AI systems to possess both a "brain" and a "body" [1][2]. Group 2: Technical Challenges - Achieving true embodied intelligence presents significant technical challenges, including the need for advanced algorithms and a deep understanding of physical simulation, robot control, and perception fusion [2][4]. - MuJoCo (Multi-Joint dynamics with Contact) is highlighted as a key technology in overcoming these challenges, serving as a high-fidelity training environment for robot learning [4][6]. Group 3: MuJoCo's Role - MuJoCo is not just a physics simulation engine; it acts as a crucial bridge between the virtual and real worlds, enabling researchers to conduct millions of trials in a simulated environment without risking expensive hardware [4][6]. - The advantages of MuJoCo include simulation speeds hundreds of times faster than real-time, the ability to test extreme scenarios safely, and effective transfer of learned strategies to real-world applications [6][8]. Group 4: Educational Opportunities - A comprehensive MuJoCo development course has been created, focusing on practical applications and theoretical foundations, covering topics from physics simulation to deep reinforcement learning [9][10]. - The course is structured into six modules, each with specific learning objectives and practical projects, ensuring a solid grasp of embodied intelligence technologies [11][13]. Group 5: Project-Based Learning - The course includes six progressively challenging projects, such as building a robotic arm control system and implementing vision-guided grasping, which are designed to reinforce theoretical concepts through hands-on experience [15][17][19]. - Each project is tailored to address specific technical points while aligning with overall learning goals, providing a comprehensive understanding of embodied intelligence [12][28]. Group 6: Career Development - Completing the course equips participants with a complete skill set in embodied intelligence, enhancing their technical, engineering, and innovative capabilities, which are crucial for career advancement in this field [29][31]. - Potential career paths include roles as robot algorithm engineers, AI research engineers, or product managers, with competitive salaries ranging from 300,000 to 1,500,000 CNY depending on the position and company [33].
首创Mid-training范式破解RL奥秘,Llama终于追平Qwen!
机器之心· 2025-06-30 09:49
Core Insights - A recent research paper from Shanghai Chuangzhi Academy and Shanghai Jiao Tong University explores the differing performances of foundational language models like Llama and Qwen in reinforcement learning (RL) training, proposing a mid-training strategy that significantly enhances Llama's compatibility with RL, narrowing the performance gap with Qwen [1][10][11]. Research Background - The introduction of large-scale RL into language models has notably improved complex reasoning abilities, particularly in challenging tasks like mathematical competitions. However, only the Qwen series has shown substantial RL enhancements, raising questions about the foundational characteristics that determine a model's adaptability to RL scaling [9][10]. Mid-Training Strategy - The research team conducted extensive mid-training experiments on the Llama-3.2-3B model, utilizing controlled mid-training to explore key factors influencing RL performance. They found that high-quality mathematical datasets significantly improve RL outcomes, while low-quality data can lead to instability [14][16][18]. Data Quality and Preprocessing - The team created the MegaMath-Web-Pro-Max dataset to support large-scale ablation studies and mid-training, which is approximately 5.5 times larger than its predecessor, MegaMath-Web-Pro. This dataset was refined using a custom classifier to ensure high quality [19][25]. Two-Stage Training Approach - A two-stage mid-training strategy was proposed, consisting of a stable reasoning foundation phase followed by specialized training to enhance model adaptability. This approach resulted in significant performance improvements across various mathematical reasoning benchmarks [27][30]. Performance Improvements - The OctoThinker base model series demonstrated a 10%-20% performance increase in mathematical reasoning tasks compared to the original Llama models. For instance, in benchmarks like GSM8K and MATH500, OctoThinker models showed marked improvements in accuracy and reasoning depth [31][32][33]. Future Directions - The research team plans to refine mathematical pre-training datasets, design RL-friendly foundational models without relying on strong long-chain reasoning models, and expand the OctoThinker family to include new branches like tool-integrated reasoning [38].
MuJoCo具身智能实战:从零基础到强化学习与Sim2Real
具身智能之心· 2025-06-24 14:29
Core Insights - The article discusses the unprecedented turning point in AI development, highlighting the rise of embodied intelligence, which allows machines to understand language, navigate complex environments, and make intelligent decisions [1][2]. Group 1: Embodied Intelligence - Embodied intelligence is defined as AI systems that not only possess a "brain" but also have a "body" capable of perceiving and interacting with the physical world [1]. - Major tech companies like Tesla, Boston Dynamics, OpenAI, and Google are competing in this transformative field, which is expected to revolutionize various industries including manufacturing, healthcare, and space exploration [1]. Group 2: Technical Challenges - Achieving true embodied intelligence faces significant technical challenges, requiring advanced algorithms and a deep understanding of physical simulation, robot control, and perception fusion [2][4]. - MuJoCo (Multi-Joint dynamics with Contact) is identified as a key technology in this domain, serving as a high-fidelity training environment for robot learning [4][8]. Group 3: MuJoCo's Role - MuJoCo allows researchers to create realistic virtual robots and environments, enabling millions of trials and learning experiences without the risk of damaging expensive hardware [6][4]. - The simulation speed can be hundreds of times faster than real-time, significantly accelerating the learning process [6]. - MuJoCo has become a standard tool in both academia and industry, with major companies utilizing it for robot research [8]. Group 4: Practical Training - A comprehensive MuJoCo development course has been designed, focusing on practical applications and theoretical foundations, covering topics from physical simulation to deep reinforcement learning [9][10]. - The course is structured into six modules, each with specific learning objectives and practical projects, ensuring a solid grasp of the technology stack [13][16]. Group 5: Project-Based Learning - The course includes six progressively challenging projects, such as building a robotic arm control system and implementing vision-guided grasping [19][21]. - Each project is designed to reinforce theoretical concepts through hands-on experience, ensuring participants understand both the "how" and "why" of the technology [29][33]. Group 6: Target Audience and Outcomes - The course is suitable for individuals with programming or algorithm backgrounds looking to enter the field of embodied robotics, as well as students and professionals interested in enhancing their practical skills [30][32]. - Upon completion, participants will have a complete technology stack in embodied intelligence, gaining advantages in technical, engineering, and innovation capabilities [32][33].
MinMax-M1:超越DeepSeek,支持百万级token上下文
自动驾驶之心· 2025-06-21 13:15
以下文章来源于AIGC面面观 ,作者欠阿贝尔两块钱 AIGC面面观 . 整理LLM、AIGC的入门笔记 | 论文学习笔记 | 一线大厂面经 | 探索AIGC落地 作者 | 欠阿贝尔两块钱 来源 | AIGC面面观 点击下方 卡片 ,关注" 自动驾驶之心 "公众号 戳我-> 领取 自动驾驶近15个 方向 学习 路线 >>点击进入→ 自动驾驶之心 『大模型』技术交流群 主要贡献 1. 高效混合架构设计 :结合MoE架构与Lightning Attention)的模型MiniMax-M1, 支持百万级上下文窗 口(1M tokens) ,生成长度达80K tokens时FLOPs仅为传统注意力模型的25%。 2. 超越DAPO的算法CISPO :通过 剪裁重要性采样权重 提升RL效率,相比DAPO实现2倍加速,避免了 传统方法(如PPO/GRPO)对低概率token有更好的采样效果。 3. 可扩展上下文 :支持从40K到80K Token生成长度的扩展。 本文只做学术分享,如有侵权,联系删文 1.混合注意力架构 Lighting Attention : 采用I/O感知的线性注意力计算,通过分块计算和内存优化 ,将长 ...