A bilingual AI research blog and second-brain style note surface for representation learning, explainability, mathematics, linguistics, and systems.https://blog.turing2234.com/https://blog.turing2234.com/article/learning-as-approximation/https://blog.turing2234.com/article/learning-as-approximation/A learning note on the shared correction pattern behind gradient descent, temporal difference learning, stochastic approximation, and Bellman fixed-point methods.Sat, 27 Jun 2026 09:45:00 GMTAIReinforcement LearningOptimizationStochastic ApproximationLearning Theoryhttps://blog.turing2234.com/zh/article/learning-as-approximation/https://blog.turing2234.com/zh/article/learning-as-approximation/一篇把 gradient descent、temporal difference learning、stochastic approximation 和 Bellman fixed-point methods 放到同一个 correction pattern 下理解的学习笔记。Sat, 27 Jun 2026 09:45:00 GMTAIReinforcement LearningOptimizationStochastic ApproximationLearning Theoryhttps://blog.turing2234.com/article/personal-ai-workbench/https://blog.turing2234.com/article/personal-ai-workbench/A concrete design note on my personal AI workbench: owners, state flows, cron maintenance, instruction boundaries, and a Karpathy-style Obsidian second brain adapted for daily work.Mon, 22 Jun 2026 01:00:00 GMTAI WorkflowMulti-Agent SystemPersonal Knowledge ManagementObsidianAutomationhttps://blog.turing2234.com/zh/article/personal-ai-workbench/https://blog.turing2234.com/zh/article/personal-ai-workbench/一篇偏系统设计的个人记录：我的 AI 工作台里，Codex、Hermes、Obsidian、CC Switch 分别拥有哪些状态，cron 怎么维护它们，以及 Karpathy-style Obsidian second brain 在这里怎么落地。Mon, 22 Jun 2026 01:00:00 GMTAI WorkflowMulti-Agent SystemPersonal Knowledge ManagementObsidianAutomationhttps://blog.turing2234.com/article/from-words-to-attention/https://blog.turing2234.com/article/from-words-to-attention/A short learning note on how word representations led to attention, self-attention, and Transformers.Tue, 28 Apr 2026 08:10:00 GMTAITransformerAttentionNLPDeep Learninghttps://blog.turing2234.com/zh/article/from-words-to-attention/https://blog.turing2234.com/zh/article/from-words-to-attention/一篇从词表示走到 attention、self-attention 与 Transformer 的学习复盘。Tue, 28 Apr 2026 08:10:00 GMTAITransformerAttentionNLPDeep Learninghttps://blog.turing2234.com/article/self-hosted-ai-gateway/https://blog.turing2234.com/article/self-hosted-ai-gateway/A practical system note on routing scattered LLM API keys through a self-hosted New API gateway, then exposing that gateway across devices with Tailscale.Tue, 24 Feb 2026 00:00:00 GMTAI GatewayLLMAPI ManagementTailscaleNew APIhttps://blog.turing2234.com/zh/article/self-hosted-ai-gateway/https://blog.turing2234.com/zh/article/self-hosted-ai-gateway/一篇实践笔记：用自托管 New API gateway 汇总分散的 LLM API key，再通过 Tailscale 暴露给不同设备。Tue, 24 Feb 2026 00:00:00 GMTAI GatewayLLMAPI ManagementTailscaleNew APIhttps://blog.turing2234.com/article/8kL2j9pD/https://blog.turing2234.com/article/8kL2j9pD/A historical note on what my OpenCode setup taught me about agent roles, permission boundaries, protocol interfaces, and cross-platform configuration.Sat, 10 Jan 2026 14:30:00 GMTOpenCodeMulti-Agent SystemAI WorkflowMCPNixhttps://blog.turing2234.com/zh/article/8kL2j9pD/https://blog.turing2234.com/zh/article/8kL2j9pD/一篇历史阶段的技术笔记：OpenCode 配置让我更清楚地看到 agent role、权限边界、协议接口和跨平台同步的问题。Sat, 10 Jan 2026 14:30:00 GMTOpenCodeMulti-Agent SystemAI WorkflowMCPNixhttps://blog.turing2234.com/article/abstraction-of-data-types/https://blog.turing2234.com/article/abstraction-of-data-types/A long-form learning note on data abstraction, from Java interfaces and C++ concepts to TypeScript unions, Kotlin sealed hierarchies, and Haskell algebraic data types.Fri, 19 Sep 2025 09:00:00 GMTProgramming LanguagesType SystemsSoftware DesignType Theoryhttps://blog.turing2234.com/zh/article/abstraction-of-data-types/https://blog.turing2234.com/zh/article/abstraction-of-data-types/一篇关于数据抽象的长篇学习笔记：从 Java 接口、C++ concepts，到 TypeScript 联合类型、Kotlin 密封层级和 Haskell 代数数据类型。Fri, 19 Sep 2025 09:00:00 GMTProgramming LanguagesType SystemsType TheorySoftware Designhttps://blog.turing2234.com/zh/article/qd0jxdk0/https://blog.turing2234.com/zh/article/qd0jxdk0/一篇历史笔记：我如何用 Nix、Home Manager 和模块化配置，让 NixOS 桌面与 macOS 笔记本保持一致。Tue, 15 Jul 2025 16:00:16 GMTNixCross-Platformhttps://blog.turing2234.com/article/qd0jxdk0/https://blog.turing2234.com/article/qd0jxdk0/A historical note on how I used Nix, Home Manager, and modular configuration to keep a NixOS desktop and macOS laptop aligned.Tue, 15 Jul 2025 15:59:48 GMTNixCross-Platformhttps://blog.turing2234.com/article/83p6ei1g/https://blog.turing2234.com/article/83p6ei1g/A short note on why I keep a public research notebook instead of treating writing, notes, and project traces as separate scraps.Tue, 15 Jul 2025 12:41:49 GMTPersonal Knowledge ManagementAI WorkflowMathematicsLinguisticshttps://blog.turing2234.com/zh/article/83p6ei1g/https://blog.turing2234.com/zh/article/83p6ei1g/一篇说明我为什么需要一个公开 research notebook，而不是把写作、笔记和项目痕迹都散落在不同地方的短文。Tue, 15 Jul 2025 12:41:49 GMTPersonal Knowledge ManagementAI WorkflowMathematicsLinguistics