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近500页史上最全扩散模型修炼宝典,一书覆盖三大主流视角
具身智能之心· 2025-10-30 00:03
Core Insights - The article discusses the comprehensive guide on diffusion models, which have significantly reshaped the landscape of generative AI across various domains such as images, audio, video, and 3D environments [3][5][6] - It emphasizes the need for a structured understanding of diffusion models, as researchers often struggle to piece together concepts from numerous papers [4][10] Summary by Sections Introduction to Diffusion Models - Diffusion models are framed as a gradual transformation process over time, contrasting with traditional generative models that directly learn mappings from noise to data [12] - The development of diffusion models is explored through three main perspectives: variational methods, score-based methods, and flow-based methods, which provide complementary frameworks for understanding and implementing diffusion modeling [12][13] Fundamental Principles of Diffusion Models - The origins of diffusion models are traced back, linking them to foundational perspectives such as Variational Autoencoders (VAE), score-based methods, and normalizing flows [14][15] - The chapter illustrates how these methods can be unified under a continuous time framework, highlighting their mathematical equivalence [17] Core Perspectives on Diffusion Models - The article outlines the core perspectives on diffusion models, including the forward process of adding noise and the reverse process of denoising [22] - Each perspective is detailed: - Variational view focuses on learning denoising processes through variational objectives [23] - Score-based view emphasizes learning score functions to guide denoising [23] - Flow-based view describes the generation process as a continuous transformation from a simple prior distribution to the data distribution [23][24] Sampling from Diffusion Models - The sampling process in diffusion models is characterized by a unique refinement from coarse to fine details, which presents a trade-off between performance and efficiency [27][28] - Techniques for improving sampling efficiency and quality are discussed, including classifier guidance and numerical solvers [29] Learning Fast Generative Models - The article explores methods for directly learning fast generative models that approximate the diffusion process, enhancing speed and scalability [30] - Distillation-based methods are highlighted, where a student model mimics a slower teacher model to achieve faster sampling [30][31] Conclusion - The book aims to establish a lasting theoretical framework for diffusion models, focusing on continuous time dynamical systems that connect simple prior distributions to data distributions [33] - It emphasizes the importance of understanding the underlying principles and connections between different methods to design and improve next-generation generative models [36]
X @Cointelegraph
Cointelegraph· 2025-10-30 00:00
🚨 JUST IN: OpenAI is preparing for a potential IPO with a valuation exceeding $1 trillion, which would rank among the largest public offerings in history, Reuters reports. https://t.co/lnHRzY331J ...
Exclusive-OpenAI lays groundwork for juggernaut IPO at up to $1 trillion valuation
Yahoo Finance· 2025-10-29 23:21
By Echo Wang, Kenrick Cai, Deepa Seetharaman and Krystal Hu SAN FRANCISCO (Reuters) -OpenAI is laying the groundwork for an initial public offering that could value the company at up to $1 trillion, three people familiar with the matter said, in what could be one of the biggest IPOs of all time. OpenAI is considering filing with securities regulators as soon as the second half of 2026, some of the people said. In preliminary discussions, the company has looked at raising $60 billion at the low end and ...
The Fed Delivers a Hawkish Cut
Investor Place· 2025-10-29 22:48
Federal Reserve Actions - The Federal Reserve cut interest rates by a quarter point to a range of 3.75% – 4.00% in a 10-2 vote [1] - The Fed will end its asset purchase reduction, known as "quantitative tightening," on December 1 [1] Inflation Insights - Fed Chair Jerome Powell described inflation as "somewhat" elevated, noting it has eased significantly from mid-2022 highs but remains above the 2% target [2][3] - Powell indicated that higher tariffs are contributing to increased prices in certain goods, leading to higher overall inflation [3] - The Fed's current presumption is that inflation effects from tariffs will be short-lived, although there is a risk of more persistent inflation [4] Labor Market Observations - Powell characterized the labor market as "cooling" rather than in freefall, with no significant uptick in jobless claims or decline in job openings [10] - The Fed is closely monitoring the impact of AI on job creation, with many companies announcing hiring freezes or layoffs due to AI [10][11] - Recent headlines indicate significant job cuts across various companies, attributed to the adoption of AI technologies [12][13][14] AI and Job Displacement - Research indicates that up to 20-30 million jobs could be displaced by AI by 2035, representing nearly 20% of current U.S. payroll employment [21] - Jobs at high risk of automation include administrative support, customer service, and transportation, with millions of positions potentially affected [19][20] Investment Strategies - Companies that leverage AI for innovation are experiencing strong earnings despite lower headcounts, with the S&P 500 reporting positive earnings surprises above 10-year averages [15][16] - Investors are advised to align their portfolios with AI companies that are likely to benefit from the transition to advanced AI and robotics [24] - Caution is advised as not all companies associated with AI will be long-term winners; discerning investment choices is crucial [26][28]
Palantir Targets Greater AI Supremacy - With Nvidia's Help
Seeking Alpha· 2025-10-29 19:21
Core Insights - Palantir Technologies Inc. has entered a strategic partnership with Nvidia, which is expected to enhance the speed of value creation in the end-to-end AI sector [1] Company Overview - Palantir Technologies Inc. (PLTR) is focusing on leveraging its partnership with Nvidia to accelerate AI development and implementation [1] Investment Strategy - The investment strategy of the family office fund led by Amrita emphasizes investing in sustainable, growth-driven companies that aim to maximize shareholder equity [1] - The fund's approach includes breaking down complex financial concepts into more accessible formats to enhance financial literacy [1]
OpenAI Restructure Paves Way for IPO and AI Spending Spree
Yahoo Finance· 2025-10-29 18:35
“We’re finally almost just Normal Co., what I’ve been calling it internally,” OpenAI Chief Financial Officer Sarah Friar said in an on-stage interview Wednesday at a conference in Riyadh. The moves announced this week allow OpenAI to “continue to raise capital in a much less complex way,” she said.To finance that, OpenAI will need to raise unprecedented amounts of capital through venture funding, debt and an eventual public offering, the last of which Altman said remains the most likely path for the company ...
AI Needs Data Centers and Bitcoin Miners Are Delivering Them
Yahoo Finance· 2025-10-29 17:49
Group 1 - Artificial intelligence (AI) requires significant computing power, relying on high-end chips and substantial electric energy for operations and training [1] - AI businesses are increasingly looking to tech companies that offer data center services, which can be sold, rented, or leased [1][2] - Bitcoin mining companies like MARA Holdings, Riot Platforms, and Terawulf are transitioning to support high-performance computing applications, including AI [3] Group 2 - MARA Holdings has a mining capacity of 50 EH/s, Riot Platforms has 35.4 EH/s, and Terawulf has 12.2 EH/s, collectively accounting for about 8% of global Bitcoin mining activity [4] - The Bitcoin mining industry is cyclical, with mining rewards halved every four years, prompting companies to seek alternative revenue streams during less profitable periods [5][6] - Bitcoin mining stocks that have embraced AI operations have outperformed Bitcoin over the past six months, indicating a successful pivot to AI services [6]
Microsoft Just Lit a Fuse Under Nebius (NBIS). Buy Now Before It Takes Off
Yahoo Finance· 2025-10-29 17:26
Group 1: Microsoft and OpenAI Partnership - Microsoft has acquired approximately 27% of OpenAI's for-profit business, valued at around $135 billion, marking a significant evolution in their partnership [1] - OpenAI is committed to procuring $250 billion in Azure cloud services, with a stipulation that API-based products must run exclusively on Azure [2] - This partnership grants Microsoft intellectual property rights to OpenAI's innovations until the realization of Artificial General Intelligence (AGI), securing a near-term monopoly over the commercial AI layer [3] Group 2: Nebius Group's Positioning - Nebius Group is positioned to benefit significantly from the partnership by supplying critical GPU resources for Azure, enhancing its compute utilization [4] - The company has a five-year agreement with Microsoft worth $17.4 billion for AI infrastructure, which could expand to $19.4 billion with increased demand [5] - Nebius's revenue stream is expected to grow as OpenAI's tools scale globally, supported by Microsoft's investment in AI supercomputing [6] Group 3: Financial Performance and Market Potential - Nebius has reported doubled revenues and positive EBITDA in its core AI business, indicating strong operational momentum [7] - The partnership positions Nebius to capitalize on a projected 45% CAGR growth in the neocloud market through 2030, making it a critical player in the AI ecosystem [7] - Nebius focuses on providing the necessary GPU infrastructure for AI innovation, meeting the rising demand for cloud-based AI services [8]
腾讯研究院AI速递 20251030
腾讯研究院· 2025-10-29 17:07
Group 1: Generative AI Developments - Nvidia showcased the Vera Rubin superchip at the GTC Washington conference, featuring an 88-core Vera CPU and two Rubin GPUs, expected to be mass-produced in Q3 or Q4 of 2026 [1] - Following the announcement, Nvidia's stock price surged by 4.98%, increasing its market capitalization by over $230 billion to reach $4.89 trillion, making it the first company to approach a $5 trillion valuation [1] - Key highlights from the conference included NVQLink quantum interconnect technology, collaboration with the U.S. Department of Energy to build seven new supercomputers, and a partnership with Uber to deploy approximately 100,000 autonomous vehicles [1] Group 2: AI Voice Synthesis and Interaction - Soul App AI team launched the open-source podcast voice synthesis model SoulX-Podcast, supporting multiple dialects and capable of generating over 60 minutes of multi-turn dialogue [2] - The model features zero-shot cloning capabilities for multi-turn conversations, allowing for dialect-specific voice generation using only standard Mandarin reference audio [2] - The model is based on Qwen3-1.7B and employs LLM + Flow Matching for voice generation, achieving optimal results in voice intelligibility and tonal similarity in podcast scenarios [2] Group 3: Adobe's AI Innovations - Adobe introduced Firefly Image 5 at the MAX conference, capable of generating photo-realistic images at a native resolution of 4MP without requiring upgrades [3] - The Adobe CC 2026 suite was officially released for Windows, including updates to Photoshop 2026 and Illustrator 2026 [3] - The new version allows for image editing through simple prompts, enabling precise modifications while maintaining the integrity of other pixels, with a focus on commercial safety [3] Group 4: Interactive AI Podcasting - Tencent's Mix Yuan launched the first interactive AI podcast in China, allowing listeners to interrupt hosts and guests with questions via voice or text during the show [4] - The system utilizes large model intent recognition and multi-turn dialogue capabilities to provide accurate answers based on context and background information, transforming the traditional one-way podcast format [4] - The AI podcast supports three modes: default, deep exploration, and speculative discussion, offering eight different voice tones and accommodating both solo and dual-host formats [4] Group 5: PayPal and OpenAI Collaboration - PayPal announced a partnership with OpenAI to integrate ChatGPT into its digital wallet, enabling users to complete shopping payments directly through the chatbot [5] - Starting next year, consumers and merchants within the PayPal ecosystem will have access to ChatGPT, allowing for product purchases and inventory listings on the platform [5] - Following the announcement, PayPal's stock surged over 15% in pre-market trading, and the company raised its full-year earnings forecast while declaring its first dividend in 27 years [6] Group 6: Adoption of Chinese AI Models - American AI programming product Windsurf was found to be utilizing a new model from China's Zhipu GLM, with Cerebras also offering GLM-4.6 inference services [7] - Several U.S. AI companies are opting for Chinese large models due to their cost-effectiveness, as OpenAI and Anthropic models are perceived as too expensive despite their quality [7] - Platforms like Together AI and Vercel have also deployed GLM-4.6 and other domestic models, indicating a rising value of "Made in China" large models [7] Group 7: Home Robotics - 1X Technologies launched the world's first humanoid household robot, NEO, available for an early bird price of $20,000 or a monthly rental of $500, with shipments expected in 2026 [8] - NEO, standing 168 cm tall and weighing 30 kg, is equipped with the Redwood AI system to perform household tasks such as vacuuming, dishwashing, and pet feeding, with a battery life of four hours and a maximum load of 68 kg [8] - A Wall Street Journal reporter noted that current operations are controlled remotely by experts via VR, with a promise from 1X that NEO will be able to autonomously handle most household tasks by 2026 [8] Group 8: Advancements in Robotics Learning - Hugging Face released LeRobot v0.4.0, introducing support for scalable Datasets v3.0 for ultra-large datasets and new dataset editing tools [9] - The new version integrates cutting-edge VLA models like PI0.5 and GR00T N1.5, and adds support for LIBERO and Meta-World simulation environments, simplifying multi-GPU training [9] - A new plugin system was launched to streamline hardware integration, allowing users to connect any robotic device with a simple pip install command, alongside the release of Hugging Face's robotics learning courses [9] Group 9: AGI Assessment and Future Directions - Turing Award winner Yoshua Bengio and others proposed a new definition of AGI as AI that matches or exceeds the cognitive diversity and proficiency of well-educated adults [10] - A framework based on the Cattell-Horn-Carroll theory was developed to evaluate general intelligence across ten core cognitive domains, including general knowledge, literacy, and mathematical ability [10] - Assessment results indicated that GPT-4 scored only 27% on the AGI scale, while GPT-5 achieved a score of 57%, highlighting significant gaps in essential cognitive abilities for human-like general intelligence [10] Group 10: OpenAI's Strategic Roadmap - OpenAI restructured to become a public benefit corporation, with the non-profit board OpenAI Foundation holding 26% of shares valued at approximately $130 billion, and Microsoft as the largest shareholder with about 27% [11] - CEO Sam Altman revealed that the company anticipates cash expenditures exceeding $115 billion by 2029, with a projected financial responsibility of $1.4 trillion to build 30 GW of infrastructure, with an IPO being the most likely direction [11] - Chief Scientist Ilya Sutskever announced goals to develop an AI research assistant capable of significantly accelerating research by September 2026 and to achieve fully automated AI researchers by March 2028 [11]
2025 Northeast Asia (Shenyang) Conference on Exchange of Professionals and "Hundred Elites and Hundred Enterprises" Shenyang Tour Kicks Off
Globenewswire· 2025-10-29 16:46
Core Insights - The 2025 Northeast Asia (Shenyang) Conference on Exchange of Professionals aimed to gather global talents to revitalize the region, featuring a record-breaking 84,000 job positions offered by 4,000 employers [2][3] Group 1: Event Overview - The conference took place on October 26, 2025, at the Industrial Museum of China, attracting significant participation with 38,653 attendees on the opening day [3] - A total of 98,000 resumes were received by companies during the event, indicating strong interest from job seekers [3] Group 2: Job Market Insights - The event showcased a total of 84,000 job positions, with 49,000 positions (nearly 60%) in future-oriented industries such as artificial intelligence, advanced materials, new energy, and biomedicine [4] - Popular fields included electrical engineering, mechanical engineering, and embedded software development, reflecting current market trends [4] Group 3: Shenyang's Development Strategy - Shenyang is positioning itself as an international central city in Northeast Asia, focusing on high-quality development and revitalization efforts for Northeast China and Liaoning Province [5] - The city has established five 100-billion-yuan industrial clusters in sectors like automobiles, high-end equipment, and aerospace, supported by 45 universities and 56 major research institutes [3][5] - The "Shenyang Talent Initiative" aims to provide comprehensive support for talent development, enhancing public service resources in education, healthcare, and other sectors [5]