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Karpathy's Knowledge Compiler: From RAG to a Compounding Second Brain

2026-04-06·2139 words·11 mins

Tech Reflections Karpathy Knowledge Management LLM Llmwiki RAG

Claude Code Advanced Notes

2026-04-05·2033 words·10 mins

Tutorials Agent AI Claude Code

Harness Engineering: The Secret to Stable AI Agents

2026-03-23·2586 words·13 mins

Tech Reflections Agent AI Harness Engineering Prompt Engineering

Eight Layers of AI: LLM, Token, Agent, and How They Connect

2026-02-22·1982 words·10 mins

Tech Notes Agent AI LLM MCP Token

Claude Code: The Complete Guide Beyond Just Writing Code

2026-01-07·2330 words·11 mins

Tutorials Agent AI Claude Code MCP Skill

Agent Skill: Three-Layer Architecture and Design Philosophy

2025-12-21·1484 words·7 mins

Tutorials Agent AI Claude Code Skill

ChatBI Product Design: Making Data Queries as Natural as Conversation

2025-11-15·1284 words·7 mins

Technical Practice AI ChatBI Data Analysis NL2SQL

AI Product Design: When the Algorithm Isn't Good Enough

2025-09-15·1842 words·9 mins

Technical Practice AI Interaction Design Product Design User Experience

LLM Evaluation and Algorithm Performance Tracking: From Model Selection to Continuous Optimization

2025-07-15·2553 words·12 mins

Technical Practice Algorithm Optimization Evaluation LLM Model Selection

AI Image Generation Explained: From Diffusion Models to Stable Diffusion

2025-05-15·1652 words·8 mins

Technical Practice AI Diffusion Image Generation Stable Diffusion

GraphRAG Deep Dive: Knowledge Graph-Enhanced Retrieval-Augmented Generation

2025-04-15·1279 words·7 mins

Technical Practice GraphRAG Knowledge Graph LLM RAG

Advanced RAG: A Deep Dive into Document Chunking Strategies

2025-02-15·1591 words·8 mins

Technical Practice Document Chunking Embedding RAG Vector Retrieval

Writing Agent PRDs: The Mistakes I Made and How I Do It Now

2025-01-12·1358 words·7 mins

Product Manager Agent AI PRD Product Manager

Windows 11 IoT LTSC Setup Guide

2024-12-15·984 words·5 mins

Tinkering LTSC Windows

Blazing-Fast Audio Transcription on Mac with MLX Whisper

2024-11-06·404 words·2 mins

Tinkering AI MacOS MLX Python Whisper

LLM Fine-Tuning in Practice: Choosing Between Full Fine-Tuning and LoRA

2024-09-15·1399 words·7 mins

Technical Practice Fine-Tuning Large Language Model LLM LoRA

Replacing Beijing Unicom's 2.5G Optical Modem

2024-06-10·535 words·2 mins

Tinkering Networking

Data Annotation and Knowledge Engineering: The Invisible Infrastructure Behind AI Applications

2024-05-20·1597 words·8 mins

Technical Practice AI Data Annotation Data Quality Knowledge Graph

Intent Recognition Deep Dive: From Requirement Analysis to Algorithm Deployment

2024-03-15·2832 words·14 mins

Technical Practice AI Classification Algorithms Intent Recognition NLP

Understanding RAG: Retrieval-Augmented Generation Behind Intelligent Customer Service

2024-01-15·1534 words·8 mins

Technical Practice Embedding LLM RAG Vector Database

Using Disko to Manage Partitions on BIOS-Boot NixOS Systems

2023-12-03·306 words·2 mins

Tinkering Disko NixOS

AVIF is Great, So Why Did I Still Choose WebP?

2023-11-15·593 words·3 mins

Tutorials AVIF FFmpeg WebP

Build Your Own Cloud Phone

2023-05-11·700 words·4 mins

Tinkering Android Arch Cloud Docker Linux NixOS Ubuntu

ChatGPT Web Reverse Engineering: Building an OpenAI-Compatible API

2023-03-20·1584 words·8 mins

Technical Practice API ChatGPT Python Reverse Engineering

JWT Basics and Practice

2023-01-17·1057 words·5 mins

Tutorials FastAPI JWT

Requirements Document Checklist

2022-11-20·1374 words·3 mins

Product Manager PRD Product Manager Requirements Document Work Method

How to Write a PRD (Product Requirements Document)

2022-07-20·1338 words·7 mins

Product Manager PRD Product Design Product Manager Work Method

What Is AVIF and How to Use It

2022-05-04·451 words·3 mins

Tutorials AVIF FFmpeg

Changing the Blog Font

2022-03-23·191 words·1 min

Blog Font

How I Built My Personal Blog

2022-02-11·568 words·3 mins

Blog Hugo