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#论文/研究

今日 6 条
8月12日周三
8月11日周二
  1. MIT News(RSS)44

    MIT CSAIL 与清华提出 GeoPT:让 AI 模型学会物理,仿真提速 2 倍、数据省 60%

    MIT CSAIL 与清华研究人员提出预训练方法 GeoPT,通过 130 万条"合成动力学"样本让仿真模型学习物理规律,达到峰值性能的速度比领先模型快 2 倍,所需数据最多减少 60%。在工业基准上,GeoPT 在速度、精度和效率上超越 SOTA 模型,模拟船体受风浪时用 60% 更少标注数据、达到峰值精度快 4 倍,并能在数秒内完成超 1 亿网格点的高保真仿真。

8月10日周一
8月6日周四
  1. Meta Engineering Blog(RSS)47

    Meta 广告排序的多阶段序列模型:从用户序列到 LLM 式缩放定律

    Meta 为广告排序提出多阶段序列模型,将离线用户建模与在线排序解耦,并引入稠密 tokenization 与 target-aware attention,使序列模型呈现可预测的 LLM 式缩放定律。该平台已带来 Instagram 转化率 6%、Facebook 转化率 3%、Facebook 广告点击 3.5% 的累计提升,并成为 Meta 生成式广告推荐模型 GEM 的核心组件。

8月5日周三
  1. MIT News(RSS)40

    MIT 团队用 AI 筛选溶剂,为钠金属电池找到 DMFSA

    MIT 团队在 Joule 发表研究,通过 AI 引导算法在 24 小时内设计出 10 万个候选分子,最终筛选出比 DMTMSA 更小的溶剂 DMFSA,用于钠金属电池。钠的储量约为锂的 1000 倍、单位成本约为锂的百分之一,但钠金属高反应性使其难以兼顾长期稳定性与快充快放。该溶剂在 27 个候选分子的对比测试中同时实现最小尺寸与最佳性能。

8月4日周二
7月31日周五
7月29日周三
  1. BAIR:Berkeley AI Research Blog62

    从 CUDA 到 MLX:K-Search 如何把数十年内核经验带到 Apple Silicon

    IBM Research 基于 UC Berkeley Sky Lab 的 K-Search 框架扩展出 MLX 后端,并设计结构化 CUDA-to-MLX 翻译层,让进化式内核搜索把已有 CUDA 内核当作知识库适配到 Apple Silicon。

    推荐理由:K-Search 把 CUDA 内核优化经验迁移到 Apple Silicon,读者可了解跨平台内核搜索的方法与实测数据。

7月28日周二
7月26日周日
  1. BAIR:Berkeley AI Research Blog32

    Berkeley AI Research 提出 ABBEL:用信念状态监督让 LLM 高效长程交互

    Berkeley AI Research 提出 ABBEL 框架,将 LLM 智能体的摘要以自然语言"信念状态"形式隔离并监督其信息内容,替代完整交互历史作为工作上下文。在协作编程基准 CollabBench 上,采用重建式信念评分的 ABBEL-rec-BG 将自摘要模型与全上下文模型的性能差距缩小约 50%,训练步数从 100 降至 50,峰值上下文 token 长度也低于全上下文设置。

7月23日周四
7月21日周二
  1. OpenAI:Alignment 研究博客(RSS)74

    OpenAI 与 Apollo Research 提出 Contrastive SDF 测量模型的 reward-seeking 倾向

    OpenAI 与 Apollo Research 发布 Contrastive Synthetic Document Finetuning 方法,通过向模型两个副本灌输相反的评分者信念,测量行为对评分者偏好的因果敏感度。

    推荐理由:原文提出可量化的 reward-seeking 测量方法,并用模型有机体验证其有效性,读者可以据此了解前沿 RL 训练中奖励寻求的演变趋势。

7月17日周五
  1. Marc Andreessen 🇺🇸55

    Edgar Dobriban 在 AI(GPT-5.6 Sol Pro)协助下否定了二十年的猜想:Benjamini-Hochberg 方法在相关双侧高斯检验下并不总能将 false discovery rate 控制在名义水平,构造的因子模型在 alpha=0.01 下证明了 FDR>0.0104。GPT-5.6 用 90 分钟推理一次性解决问题,而 GPT-5.5 迭代约 20 小时未能解决;偏离幅度较小,意义主要是概念性的。预印本见 https://faculty.wharton.upenn.edu/wp-content/uploads/2017/06/bh.pdf,代码见 https://github.com/dobriban/BH。

    引用Edgar Dobriban@EdgarDobriban

    AI has helped resolve an important question in statistics. In the area of multiple hypothesis testing, the goal of controlling the false discovery rate (FDR) has been introduced in a seminal paper by Benjamini and Hochberg (1995). They also introduced a method (the Benjamini-Hochberg or BH method) and proved it controls the FDR. This method has been widely adopted in modern high-throughput science, including in genomics, astronomy, economics, etc. The paper has has garnered more than 130,000 citations to date. However Benjamini and Hochberg showed FDR control only when the data for the individual tests are *independent*. In practice, these data are often dependent; a good example is data on genetic variants due to linkage disequilibrium. Later work has focused on extending the validity of the BH procedure, e.g., to a form of positive dependence by Benjamini and Yekutieli (2001). The question of when the BH procedure controls the FDR has remained open. Over the last twenty years, many authors, including Reiner-Benaim (2007), Kim and van de Wiel (2008), Benjamini (2010), Sarkar (2023), Sarkar and Zhang (2025), have conjectured that the BH procedure controls the FDR for two-sided tests using any correlated Gaussian data. These authors have presented both theoretical and empirical evidence supporting, but not directly showing, the conjecture. With the help of AI (specifically GPT-5.6 Sol Pro), I have settled the question in the negative: The Benjamini-Hochberg procedure does *not* generally control the false discovery rate at the desired level for correlated two-sided Gaussian tests. This was done by exhibiting a Gaussian factor model for which, at a nominal level alpha=0.01, the false discovery rate is proved to be FDR>0.0104. There is a lot of interesting commentary to be made: 1. This result should be of interest to everybody in the field of statistics. Emmanuel Candes of Stanford University once called the false discovery rate and the Benjamini-Hochberg procedure "one of the two most important developments in statistics after 1950" (the other being James-Stein shrinkage). The present conjecture is probably the most central question about FDR/BH that was unresolved to date. 2. GPT-5.6 one-shot the problem after 90 minutes of reasoning, whereas with 5.5 I was not able to solve it even after iterating with multiple parallel agents for perhaps 20 hours. So the capability improvement is quite real. Exciting times to live in! 3. The argument is not especially surprising, but it does combine an asymptotic approach (standard for FDR analysis, see e.g., Genovese and Wasserman, Efron, etc) with a numerical certificate in a way that would be pretty non-standard in the field. Once we have the specific example, then straightforward simulations also support that the false discovery rate is indeed higher than the nominal value (see attached fig). 4. The current degree of violation over the nominal level is relatively small (0.104 vs 0.1). So the importance of this result is mainly conceptual. The practical implications remain to be determined. Overall, an exciting development! Preprint is available here (https://faculty.wharton.upenn.edu/wp-content/uploads/2017/06/bh.pdf) and will be on arxiv tonight; supporting code is here (https://github.com/dobriban/BH).

7月16日周四
  1. MIT News(RSS)46

    MIT Media Lab 提出"神经透明性":让用户在聊天机器人开口前预览 AI 性格

    MIT Media Lab 助理教授 Pat Pataranutaporn 与研究生 Anthony Baez、Sheer Karny 提出"神经透明性",通过对比模型在同理心、诚实、毒性、幻觉、谄媚等行为上的内部激活差异,将用户系统提示词对应的模型激活投影为旭日图,在对话开始前预览聊天机器人性格。研究显示,用户对 15 项性格特质中的 11 项预测错误,且可视化虽提升信任却未改变其设计方式。

7月15日周三
7月13日周一
7月9日周四
  1. MIT News(RSS)48

    MIT 推出 FloatForm:小型机器人船群自组装水上漂浮结构

    MIT 团队发布 FloatForm 系统,由 21 厘米见方的方形机器人船组成,可自主组装成刚性结构、拆解并重组,单次运行耗时 4 至 8 分钟。该系统仅需轻量中央规划器分配最终位置,其余导航与避碰由机器人自身完成,仿真显示可平滑扩展至 64 艘的集群。相关论文已发表于 Nature Communications。

7月8日周三
  1. Google Research49

    Google Research 用 Google Maps 路线干预缓解城市拥堵

    Google Research 在 Nature Cities 发表首个大规模真实世界研究,通过修改 Google Maps 算法将不到 2% 的行程引导至相近耗时的替代路线,在美国 10 座城市测试六个月。结果显示目标路段行驶速度中位数提升约 2%,油耗率中位数下降 0.5% 至 1.0%,每座城市每年可减少数千吨 CO2e 排放。

7月1日周三
  1. Jim Fan49

    ENPIRE -> ASPIRE,我们 Physical AutoResearch 系列的第二项工作。我们正在构建机器人自我改进的组件,一次一个 /skill。

    引用Jim Fan@DrJimFan

    Today, we give robots a /skills library that self-evolves and compounds indefinitely! Introducing ASPIRE: a robot solving its 100th task is no longer as clueless as solving its first. Coding agents observe multimodal sensory traces from simulation and real robots, launch an evolutionary search over control programs, and distill the best know-how into an ever-expanding library. ASPIRE is a new type of continual learning: "training" is skill refinement instead of gradient descent. "Trained model" is a repo of sensorimotor skills instead of floating weights. “Distributed training” is a panel of agents each practicing a different skill instead of sharded minibatches. Here's the beauty: ASPIRE gives the tired terms "sim2real transfer" and "cross-embodiment transfer" a whole new meaning. Bridging the sim-to-real gap is notoriously brutal. An end-to-end policy has to swallow both the visual shift (sim looks toyish next to a real camera) and the subtle contact physics it never quite gets right. ASPIRE sidesteps the mess, because it doesn't ship pixels or weights across the gap, but ships the know-how. The robot still has to practice in the real world, not zero-shot, but it gets there way faster because it isn't rediscovering the strategy from scratch. Same for going single-arm to bimanual hardware, which usually requires new data and retraining from zero. ASPIRE achieves up to ~10x cut in "transfer learning” tokens (yes, tokens are the new unit of *training* compute ;) Check out our gallery of 150+ tasks and 90+ skills the robots taught themselves, all on the website! Kind of wild that we can ship the "learned weights" as an HTML page rather than a GGUF. We'll open-source the full stack so your own robot library starts compounding from ours! Deep dive in thread:

  2. Jim Fan47

    Jim Fan 团队发布 ASPIRE,让编码智能体观察仿真与真实机器人的多模态感知轨迹,通过进化搜索控制程序并将最优经验蒸馏进持续扩张的技能库。ASPIRE 把"训练"重新定义为技能精炼而非梯度下降,跨仿真到真实与跨本体迁移时只传技能知识而非像素或权重,迁移学习 token 消耗最多降低约 10x。团队展示了 150+ 任务、90+ 技能,并将开源全栈。

6月30日周二
6月25日周四
  1. Google Research47

    Google 用线性弹性缓存优化云成本,Spanner 内存占用降 15.5%

    Google Research 提出线性弹性缓存,将页面淘汰建模为滑雪租赁问题,用轻量机器学习动态调整缓存大小以最小化总拥有成本。在 Spanner 生产环境测试数月后,内存占用降低 15.5%,缓存未命中仅增加 5.5%,TCO 降低约 5%,实际 I/O 成本影响仅 0.5%。该方案用可转为几行 C++ 代码的浅层决策树预测页面 TTL,并在缓存写满时回退到 LRU 淘汰。

6月23日周二
  1. MIT News(RSS)43

    MIT 新型芯片 Gleanmer 可助微型机器人实时构建 3D 地图

    MIT 研究人员推出名为 Gleanmer 的系统级芯片,能让小型自主机器人仅用约 6 毫瓦功耗实时构建详细 3D 环境地图,功耗仅相当于一颗 LED。该芯片结合 GMMap 算法与专用硬件,用高斯椭球体替代传统体素表示障碍物与自由空间,单次处理深度图像即可生成高斯分布,无需存储整张图像。该成果已在 IEEE VLSI Symposium 上展示,也有望用于轻量 AR 头显。

6月19日周五
  1. OpenAI:Alignment 研究博客(RSS)53

    OpenAI 研究:针对有益特质的强化学习可实现广泛且持久的对齐泛化

    OpenAI 对齐研究团队发布论文,发现对健康等真实场景中有益特质(诚实、认知谦逊、可纠偏等)做强化学习,可在 44/53 个分布外公开和内部评测上提升对齐表现,涵盖欺骗、reward hacking、有害建议等。仅用单一健康领域训练也能改善非健康域的对齐,且模型在对抗提示和有害微调下更难被推向有害行为,同时保持对正常指令的可操控性。