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从推荐算法优化到AI4S、Pico和大模型,杨震原长文揭秘字节跳动的技术探索
机器之心· 2025-11-25 09:37
Group 1 - The core viewpoint of the article highlights ByteDance's commitment to fostering academic excellence through the ByteDance Scholarship, which has increased its award amount and expanded its reach to more universities [1] - The scholarship attracted over 500 applicants from 66 universities in China and Singapore, with 20 students awarded in various fields including AI and robotics [1] - The award amount has been upgraded from 100,000 yuan to 200,000 yuan, which includes 100,000 yuan in cash and 100,000 yuan for academic resources [1] Group 2 - ByteDance's Vice President of Technology, Yang Zhenyuan, shared insights on the company's technological explorations and encouraged students to tackle significant technical challenges [1][2] - The company has been involved in large-scale machine learning and recommendation systems since 2014, aiming to build a recommendation system capable of handling trillions of features [7][10] - ByteDance has made significant advancements in scientific computing, particularly in solving the Schrödinger equation to simulate various phenomena, indicating a focus on AI's potential in real-world applications [13][15] Group 3 - In 2021, ByteDance acquired Pico to explore XR technology, aiming to enhance user experience through hardware innovations [27] - The company is focusing on improving clarity in XR devices, targeting a pixel density (PPD) of nearly 4000, significantly higher than existing products [29][32] - ByteDance is also developing a dedicated chip for XR devices to address processing challenges, achieving a system latency of around 12 milliseconds [34][35] Group 4 - The emergence of large models, particularly after the launch of ChatGPT, has prompted ByteDance to invest in AI technologies, leading to the development of popular AI applications like Doubao [39][40] - The company has established a robust training infrastructure, achieving a floating-point utilization rate exceeding 55%, which is significantly higher than mainstream frameworks [39] - ByteDance is exploring the future of large models and their potential impact on various industries, emphasizing the need for continuous learning and interaction capabilities in AI [43][44]
哈工大深圳团队推出Uni-MoE-2.0-Omni:全模态理解、推理及生成新SOTA
机器之心· 2025-11-25 09:37
Core Insights - The article discusses the evolution of artificial intelligence towards Omnimodal Large Models (OLMs), which can understand, generate, and process various data types, marking a shift from specialized tools to versatile partners in AI [2] - The release of the second-generation "LiZhi" Omnimodal Large Model, Uni-MoE-2.0-Omni, is highlighted, showcasing advancements in model architecture and training strategies [3][11] Model Architecture - Uni-MoE-2.0-Omni is built around a large language model (LLM) and features a unified perception and generation module, enabling comprehensive processing of text, images, videos, and audio [7] - The model employs a unified tokenization strategy for multimodal representation, utilizing a SigLIP encoder for image and video processing and Whisper-Large-v3 for audio, significantly enhancing understanding efficiency [7] - The architecture includes a Dynamic-Capacity MoE, allowing for adaptive processing based on token difficulty, which improves stability and memory management [8] - A full-modal generator integrates understanding and generation tasks into a seamless flow, enhancing capabilities in speech and visual generation [8] Training Strategies - A progressive training strategy is designed to address instability in mixed expert architectures, advancing through cross-modal alignment, expert warming, MoE fine-tuning, and generative training [11] - The team proposes a joint training method that anchors multimodal understanding and generation tasks to language generation, breaking down barriers between the two [11] Performance Evaluation - Uni-MoE-2.0-Omni has been evaluated across 85 benchmarks, achieving state-of-the-art performance in 35 tasks and surpassing the Qwen2.5-Omni model in 50 tasks, demonstrating high data utilization efficiency [13] - The model shows a 7% improvement in video evaluation benchmarks compared to Qwen2.5-Omni, indicating significant advancements in multimodal understanding [13] Use Cases - The model is capable of various applications, including visual mathematical reasoning, image generation considering seasonal factors, image quality restoration, and serving as a conversational partner [18][20][28][30] Conclusion and Outlook - Uni-MoE-2.0-Omni represents a significant advancement in the field of multimodal AI, providing a robust foundation for future research and applications in general-purpose multimodal artificial intelligence [33]
吴恩达发布论文自动审阅器,ICLR上达到接近人类水平
机器之心· 2025-11-25 04:09
Core Viewpoint - The article discusses the challenges and potential solutions in the academic paper review process, particularly the integration of AI tools to enhance efficiency and feedback quality in the face of increasing submission volumes [2][6][14]. Group 1: Current State of Academic Review - There is no unified standard for using AI in paper reviews across major conferences, with ICLR requiring disclosure of AI use and CVPR prohibiting it entirely [2]. - Despite strict regulations, a significant portion of reviews at ICLR 2026 is generated by AI, with estimates suggesting that up to 20% of reviews are AI-generated [2][6]. - The lengthy review cycles are a growing concern, as exemplified by a Stanford professor's student who faced six rejections over three years, each requiring about six months for feedback [4][5]. Group 2: AI as a Solution - The slow feedback loop in academic publishing contrasts sharply with the rapid pace of technological advancement, prompting the exploration of AI to create a more efficient paper feedback workflow [6]. - Stanford professor Andrew Ng introduced the "Agentic Reviewer," an AI tool designed to provide high-quality feedback before formal submission, which has shown promising results in training on ICLR 2025 data [7][11]. - The correlation between AI-generated reviews and human reviews is notable, with a Spearman correlation coefficient of 0.42, indicating that AI is approaching human-level performance in this context [9]. Group 3: Community Reactions and Future Implications - The academic community generally views AI review tools positively, with hopes for features tailored to specific conferences and the ability to provide score estimates [11]. - Concerns have been raised about the potential impact on academic diversity if researchers rely too heavily on AI for preliminary reviews [13]. - The article questions whether the academic review system is on the brink of transformation due to the integration of AI, leaving the future role of AI in academic research development uncertain [14].
AAAI 2026 Oral | 悉尼科技大学联合港理工打破「一刀切」,联邦推荐如何实现「千人千面」的图文融合?
机器之心· 2025-11-25 04:09
Core Insights - The article discusses the introduction of a new framework called FedVLR, which addresses the challenges of multimodal integration in federated learning environments while ensuring data privacy [2][3][19]. Multimodal Integration Challenges - Current recommendation systems utilize multimodal information, such as images and text, but face difficulties in federated learning due to privacy concerns [2][5]. - Existing federated recommendation methods either sacrifice multimodal processing for privacy or apply a one-size-fits-all approach, which does not account for individual user preferences [2][5]. FedVLR Framework - The FedVLR framework redefines the decision-making flow for multimodal integration by offloading heavy computation to the server while allowing users to control how they view the data through a lightweight routing mechanism [3][19]. - It employs a two-layer fusion mechanism that decouples feature extraction from preference integration [8][19]. Server-Side Processing - The first layer involves server-side "multi-view pre-fusion," where the server processes data using powerful pre-trained models to create a set of candidate fusion views without burdening client devices [9][10]. - This approach ensures that the server prepares various "semi-finished" views that contain high-quality content understanding [10]. Client-Side Personalization - The second layer focuses on client-side "personalized refinement," utilizing a lightweight local mixture of experts (MoE) routing mechanism to dynamically compute personalized weights based on user interaction history [11][12]. - This process occurs entirely on the client side, ensuring that user preference data remains on the device [12]. Performance and Versatility - FedVLR is designed to be a pluggable layer that can integrate seamlessly with existing federated recommendation frameworks like FedAvg and FedNCF, without increasing communication overhead [16]. - The framework demonstrates model-agnostic capabilities, allowing it to enhance various baseline models significantly [26]. Experimental Results - The framework has been rigorously tested on public datasets across e-commerce and multimedia domains, showing substantial and stable improvements in core recommendation metrics like NDCG and HR [26]. - Notably, FedVLR performs exceptionally well in sparse data scenarios, effectively leveraging limited local data to understand item content [26]. Conclusion - FedVLR not only enhances recommendation systems but also provides a valuable paradigm for implementing federated foundational models, addressing the challenge of utilizing large cloud models while maintaining data privacy [19].
Gemini 3,是谢尔盖・布林「骂」出来的?
机器之心· 2025-11-25 04:09
Core Viewpoint - The article discusses Google's response to the competitive pressure from OpenAI and the resurgence of its AI capabilities, particularly through the return of co-founder Sergey Brin and the development of the Gemini AI model [2][6][24]. Group 1: Google's Initial Response to AI Competition - When ChatGPT emerged in late 2022, Google, despite its extensive experience in AI, was slow to respond, leading to perceptions of it being "slow to react" and losing its competitive edge [2][4]. - Google's hurried launch of the Bard AI was met with criticism due to inaccuracies and instability, failing to alleviate concerns about its position in the market [5][6]. Group 2: Sergey Brin's Return and Internal Challenges - Sergey Brin's return to Google was pivotal in addressing internal bureaucratic issues that hindered the development of AI tools like Gemini [6][17]. - Brin expressed frustration over internal policies that restricted Gemini's coding capabilities, highlighting the bureaucratic challenges within the company [10][16]. Group 3: Competitive Landscape and Google's Resurgence - The competition from OpenAI has significantly motivated Google, leading to rapid advancements in its AI offerings, particularly with the Gemini 3 model [22][24]. - OpenAI's CEO Sam Altman acknowledged the pressure from Google's advancements, indicating a shift in the competitive dynamics of the AI sector [25][26]. Group 4: Financial and Strategic Positioning - Google benefits from a robust financial foundation, with annual revenues exceeding $300 billion, allowing it to invest strategically in AI without immediate profit concerns [27]. - In contrast, OpenAI faces significant financial challenges, with a valuation of $500 billion but projected losses of $7 billion by 2028, raising concerns among investors [27][28]. Group 5: Future Directions for OpenAI - OpenAI plans to develop a new model, Shallotpeat, to address pre-training deficiencies and enhance its competitive position [28][30]. - Altman emphasized the need for OpenAI to excel in research, infrastructure, and product development, which mirrors Google's long-standing business model [30].
与Banana Pro过过招,国产Libcom图像合成工作台开启Labubu漫游记
机器之心· 2025-11-25 04:09
Core Viewpoint - In 2025, AIGC (AI-Generated Content) has reached new heights, with AI-generated content permeating daily creation across various fields such as social avatars, e-commerce posters, and film storyboards. Notable models like Nano Banana and Qwen Edit have shown strong capabilities in general image editing, particularly the popular Nano Banana Pro, which converts text instructions into high-precision images. However, these models still exhibit shortcomings in specific niches and may not be cost-effective for simple tasks [1]. Group 1: Image Composition Research - The Niu Li team from Shanghai Jiao Tong University has been engaged in image composition research since late 2018, focusing on object insertion, commonly referred to as "fusion" in the AIGC community. Their work aims to address common issues in image composition, such as jagged edges, inconsistent lighting, missing shadows and reflections, and improper perspective [1][2]. - From 2018 to 2025, the Niu Li team has built over 10 datasets, developed more than 30 original models, and published over 25 high-quality academic papers. By the end of 2023, they launched the Libcom toolbox, which offers out-of-the-box image composition capabilities without the need for training or fine-tuning [2]. Group 2: Libcom Toolbox Features - The Libcom toolbox will undergo a comprehensive upgrade in 2025, introducing a user-friendly image composition workstation that focuses on 12 functionalities, including generation, detection, and evaluation, distinguishing it from general image editing models [2][5]. - The workstation interface allows users to register and access detailed functionality descriptions. The 12 features are categorized into six groups: 1. Basic Composition: alpha blending, Poisson blending 2. Image Harmonization: color transfer, image harmonization, artistic image harmonization 3. Background Effect Generation: shadow generation, reflection generation 4. Analysis Tools: disharmony area detection, object placement rationality heatmap 5. Scoring Tools: harmony score, object placement rationality score 6. Advanced Composition: integrates FLUX-Kontext and InsertAnything models [5]. Group 3: Performance Comparison - A practical exploration using the character Labubu demonstrated the capabilities of the Libcom workstation compared to Nano Banana Pro. In various scenarios, Libcom effectively integrated Labubu into different backgrounds, while Nano Banana Pro showed inconsistent results [7][14]. - For instance, when assessing harmony in lighting between Labubu and a forest background, Libcom provided a harmony score of 0.391, indicating poor harmony, while Nano Banana Pro scored 0.24, suggesting a similar conclusion but with discrepancies in the results [17][18]. - In artistic scenarios, Libcom allowed for more creative adjustments, while Nano Banana Pro maintained a more conservative approach. The performance of both models varied in generating shadows and reflections, with Libcom generally providing more accurate results [20][26][27].
新型AI芯片能耗重大突破,已登Nature子刊
机器之心· 2025-11-25 00:02
Core Viewpoint - The research highlights the significant energy consumption and area occupation of Analog-to-Digital Converters (ADC) in Compute-in-Memory (CIM) systems, which undermines the energy efficiency advantages that CIM technology promises [6][7]. Group 1: Background and Challenges - The AI wave has led to concerns over power consumption, particularly in traditional architectures where data transfers between CPU and memory are energy-intensive [3]. - CIM technology is seen as a potential solution to eliminate data transfer bottlenecks by performing calculations directly in memory [4]. - However, the necessity of ADC to convert analog signals back to digital introduces a significant energy and area cost, consuming up to 87% of total energy and 75% of chip area in advanced CIM systems [6][7]. Group 2: Limitations of Traditional ADC - Traditional ADCs use uniform quantization, which does not align with the diverse output signal distributions of neural networks, leading to precision loss [12]. - To compensate for this loss, designers often resort to higher precision ADCs, which results in exponential increases in power consumption and area, creating a vicious cycle [13]. Group 3: Innovative Solutions - The research team proposes using memristors to create adaptive quantization units (Q-cells) that allow for programmable quantization boundaries, enhancing the efficiency of ADCs [15][18]. - This adaptive quantization method significantly improves accuracy, with the VGG8 network achieving an accuracy of 88.9% at 4-bit precision, compared to 52.3% with traditional methods [21]. Group 4: System-Level Benefits - The new memristor-based ADC achieves a 15.1 times improvement in energy efficiency and a 12.9 times reduction in area compared to state-of-the-art designs [25]. - When integrated into CIM systems, the energy consumption of the ADC module in the VGG8 network drops from 79.8% to 22.5%, and area occupation decreases from 47.6% to 16.9%, leading to overall system energy savings of 57.2% [26][28]. - This innovation effectively addresses the ADC bottleneck in mixed-signal CIM systems, paving the way for more efficient and accurate next-generation AI hardware [30].
刚刚,智能体&编程新王Claude Opus 4.5震撼登场,定价大降2/3
机器之心· 2025-11-24 23:49
Core Viewpoint - Anthropic has officially released its latest model, Claude Opus 4.5, which is touted as one of the most advanced AI models available today, showcasing significant improvements in programming, agent capabilities, and everyday tasks like handling spreadsheets and presentations [1][2]. Pricing and Accessibility - Claude Opus 4.5 is accessible via the Claude app, API, and major cloud platforms, with a new pricing structure set at $5 for every million tokens for input and $25 for output, representing a two-thirds reduction compared to the previous version, Opus 4.1 [5][6]. Performance Metrics - In benchmark tests, Claude Opus 4.5 achieved state-of-the-art (SOTA) performance, surpassing competitors like GPT-5.1-Codex-Max and Gemini 3 Pro in various software engineering tasks [2][12]. - The model scored higher than all human candidates in a challenging take-home exam designed to assess technical skills under time pressure, indicating its superior technical capabilities [11]. Enhanced Capabilities - Claude Opus 4.5 shows improvements across multiple domains, including visual reasoning, mathematical reasoning, and problem-solving, achieving SOTA levels in agent programming and tool usage [11][12][20]. - The model's ability to solve complex coding problems has improved by 10.6% compared to its predecessor, Sonnet 4.5 [14]. Developer Tools and Features - The Claude developer platform has been updated to support longer-running agents and improved user experience, allowing for multiple concurrent sessions in desktop applications [7][8]. - New features include an "effort" parameter in the API, enabling developers to balance between speed, cost, and model capability, resulting in significant reductions in token usage while maintaining performance [30][34]. Safety and Alignment - Claude Opus 4.5 is noted for its robust alignment and safety features, being one of the most resilient models against prompt injection attacks, which can mislead models into harmful behaviors [36][39]. - The model has shown substantial progress in mitigating concerning behaviors, enhancing its reliability in various applications [36][39].
LUMA AI完成由HUMAIN领投的9亿美元C轮融资,并将在沙特阿拉伯合作建设2吉瓦AI超级集群
机器之心· 2025-11-24 09:30
Core Insights - Luma AI has raised $900 million in Series C funding to accelerate its development towards multimodal AGI, which can simulate reality and assist humans in the physical world [1][3][4] - The partnership with HUMAIN aims to build Project Halo, a 2 GW AI supercluster in Saudi Arabia, which will support the training of large-scale world models [3][4][5] - The collaboration is expected to unlock significant opportunities across various sectors, including entertainment, marketing, education, and robotics, potentially worth trillions [1][4] Company Overview - Luma AI is focused on creating multimodal general intelligence capable of generating, understanding, and manipulating the physical world [8] - The flagship model, Ray3, has been successfully deployed in studios, advertising agencies, and brands, including integration with Adobe's global products [7][8] - HUMAIN, a PIF company, provides comprehensive AI capabilities across four core areas: next-generation data centers, high-performance infrastructure, advanced AI models, and transformative AI solutions [9] Funding and Infrastructure - The $900 million funding round was led by HUMAIN, with participation from AMD Ventures and previous investors like Andreessen Horowitz and Matrix Partners [1][3] - The Project Halo supercluster will represent a significant leap in multimodal AI infrastructure, enabling the training of peta-scale multimodal data [5][6] - Luma AI plans to expand its leadership in entertainment and advertising into simulation, design, and robotics with the new funding [7] Strategic Goals - The partnership aims to create AI systems that can learn from vast amounts of data, estimated at quadrillions of tokens, to enhance understanding and simulation of reality [5][6] - HUMAIN's investment philosophy emphasizes building a complete value chain to support the next wave of AI development [5] - The collaboration is set to establish new benchmarks for how capital, computing power, and capabilities can be integrated in the AI sector [5]
NeurIPS 2025 | UniLumos: 引入物理反馈的统一图像视频重打光框架,实现20倍加速的真实光影重塑!
机器之心· 2025-11-24 09:30
Core Insights - The article discusses the advancements in image and video relighting technology, particularly focusing on the introduction of UniLumos, a unified framework that enhances physical consistency and computational efficiency in relighting tasks [3][37]. Group 1: Challenges in Existing Methods - Current methods based on diffusion models face two fundamental challenges: the lack of physical consistency and an inadequate evaluation system for relighting quality [11][12]. - Existing approaches often optimize in semantic latent spaces, leading to physical inconsistencies such as misaligned shadows, overexposed highlights, and incorrect occlusions [15][11]. Group 2: Introduction of UniLumos - UniLumos is introduced as a solution to the aforementioned challenges, providing a unified framework for image and video relighting that maintains scene structure and temporal consistency while achieving high-quality relighting [17][37]. - The framework incorporates geometric feedback from RGB space, such as depth and normal maps, to align lighting effects with scene structures, significantly improving physical consistency [4][22]. Group 3: Innovations and Methodology - Key innovations include a geometric feedback mechanism to enhance physical consistency and a structured six-dimensional lighting description for fine-grained control and evaluation of lighting effects [18][22]. - The training data set, LumosData, is constructed to extract high-quality relighting samples from real-world videos, facilitating the training of the model [20][21]. Group 4: Performance and Efficiency - UniLumos demonstrates superior performance across various metrics, achieving state-of-the-art results in visual fidelity, temporal consistency, and physical accuracy compared to baseline models [27][28]. - The framework achieves a 20-fold increase in inference speed while maintaining high-quality output, making it significantly more efficient than existing methods [33][38]. Group 5: Evaluation and Results - The LumosBench evaluation framework allows for automated and interpretable assessment of relighting accuracy across six dimensions, showcasing UniLumos's advantages in fine-grained control over lighting attributes [22][29]. - Qualitative results indicate that UniLumos produces more realistic lighting effects and maintains better temporal consistency compared to baseline methods [31][33].