Matteo He

I wanted to properly understand the optimisation literature, so I learnt it by building this. It covers forty results, from saddle points and the edge of stability to mode connectivity and the safety basin. Each one is a 3D landscape you can spin round while a dozen optimisers roll across it. Zoom in and the particles become stick men, who scratch their heads at saddles and sit round a campfire once they settle. I hope the pictures help someone else build the same intuition.

I built a terminal monitor for rented cloud GPUs: every instance’s training logs and metrics on one screen, with alerts when a run stalls, hits NaNs or plateaus.

I built an app for learning Japanese from real text. Paste in anything you’re reading and it marks each word’s grammar and level, with furigana over the kanji. Translation runs on a language model inside your browser, so it costs nothing to serve.

I took Conway’s Game of Life into three and four dimensions. A 3D cell has 26 neighbours rather than 8, so the hard part is finding rules that work: you can tune them by hand, or let a rule finder try hundreds and keep the ones that stay alive.

I built Sudoku in up to six dimensions. Every number appears once along each row, column and line through the layers, and you play one 2D slice at a time, sliding through the rest.

I turned the falling code from The Matrix into a corridor you fly through, steering with the mouse or a finger. The space bar warps it into a tunnel.

I lit a generated cave with nothing but the falling code: each string is water running over the rock, so you see the walls only where it traces them. Every sound, down to the muffled drips, is synthesised in the page.