AI 焦点 · AI Focus

AI 学习与交流社区：从数学基础到前沿模型，从原理到应用，覆盖机器学习、深度学习、大语言模型与 AI 产业动态。面向学习者、开发者与研究者，分享可落地的干货与系统化内容。

AI learning and exchange community: from mathematical foundations to frontier models, from principles to applications — machine learning, deep learning, large language models and AI industry news. Open to learners, developers and researchers, with practical, systematic and actionable content.

内容板块 · Content Areas

• 数学基础 Mathematics for AI — 线性代数、微积分、概率与信息论、优化（Linear algebra, calculus, probability & information, optimization）
• 机器学习与深度学习 Machine Learning & Deep Learning — 神经网络、训练与评估（Neural networks, training and evaluation）
• 大语言模型与智能体 LLMs & Agents — Transformer、提示工程、RAG、Agent（Transformers, prompting, RAG, agents）
• AI 应用与产业动态 AI Applications & Industry — 产品、芯片、政策与市场新闻（Products, chips, policy and market news）

学习路径 · Learning Paths

• AI 数学焦点 · The Mathematics of Artificial Intelligence — From First Principles to Transformers 英文版 · English edition. 由浅入深讲解 AI 背后的数学原理：线性代数 → 微积分 → 概率与信息 → 优化 → 神经网络 → Transformer。附公式速查表、自测题与术语表。 A progressive, intuition-first tour of the math behind AI, from first principles to transformers — with a formula cheat sheet, self-test questions and glossary.

焦点文章 · Featured Articles

• 未来AI焦点 · 板块介绍
• AI 数学焦点 · The Mathematics of Artificial Intelligence
• If AI can do math, what's the point of mathematicians?

产业快讯 · Industry Briefs

• OpenAI Releases GPT-6 Astra, Declaring "Welcome to the AGI Era"
• Nvidia Acquires Hugging Face for $12.93B in Its Biggest Deal Ever
• US DOJ Backs OpenAI: Training LLMs on Copyrighted Content Can Be "Fair Use"
• Broadcom's AI Chip Revenue Surges 221%, Mass-Produces Google TPU 8i to Rival Nvidia
• Tesla Cybercab Unveiled in Austin: No Steering Wheel, No Pedals, No Mirrors
• Suiyuan Tech Draws 7.03M Subscribers in STAR Market IPO — Domestic AI Chip Fever
• Major AI Chatbots Hit by Simultaneous Outages: ChatGPT, Claude and Grok All Down
• Model Race Shifts to Cost-Performance: Meta's Muse Spark 1.3 and Google's Gemini 3.8 Flash (incl. Cyber)

焦点描述 · Focus description. 中英对照 / Bilingual. 链接来自 AI 焦点公开文章。