A notebook, in public.
AI · Nanjing University
02 / CODE & EXPERIMENTS
Things I build, experiments still taking shape, and the notes behind them.
Reinforcement learning
A 2D stickman learns to reach a target with PPO through an obstacle curriculum, with a desktop console for live training.
Full-course deterministic evaluation: 54/80 successes (67.5%). Natural upright walking is not claimed.
Interactive learning
A browser investigation game about supervised learning, overfitting, hidden tests, and controlled experiments. Models train in the browser; test labels stay hidden until an audit.
Agent tooling
Connects ChatGPT Web to a local DSH runtime over OAuth and MCP, exposing its existing tools, skills, and policies without wrapping each extension.
Mathematical animation
A continuous animation of neural-network mechanisms following Dive into Deep Learning: 49 segments, 11 min 21 s at 1080p60.
64 automated checks cover the underlying mathematics and rendering.
Geometry tools
Quad edge loops for long, tube-like meshes, with bend previews and a Blender add-on.
Branching shapes such as whole hands and bodies are not yet handled.
Community tools
A QQ group bot built on AstrBot and NapCat: join-request verification and reaction-vote moderation. Merged pull requests deploy after CI passes, with rollback on failure.
The join-request verifier only auto-approves; it never automatically rejects a request.
Experimental infrastructure
Local patches, fast previews, and evidence-based review for AI-authored mathematical and machine-learning animations.
A stable improvement in expressive quality has not yet been shown.
Planning & bounded validation
A planned platform where AI agents investigate a researcher’s ideas and meet with the researcher to decide the next experiment.
There is no platform application yet.
Ongoing notes and exercises on GitHub. Finished essays live in Writing →.
Reading notes and exercises on machine learning and deep learning.
Nanjing University course notes: mathematical analysis, advanced algebra, discrete mathematics, and programming.
