Matthew Ritch

About Projects Fun Blog
Riding my bike

I am a forward-deployed engineer at Ancera.
I am interested in calm solutions for noisy physical processes, like biology at scale.

Recent writing

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Jane Street's ‘Pent-Up’ Frustration 3 / Knight Moves 7 Puzzle: Constraint Satisfaction and Backtracking
Solving Jane Street's ‘Pent-Up’ Frustration 3 / Knight Moves 7 puzzle with backtracking depth-first search.
Estimating disease prevalence by fusing pooled and individual testing
Turning our arXiv paper into an interactive walk-through. Combine pooled and individual disease tests into a single closed-form Bayesian posterior for population prevalence sans MCMC.
Jane Street's Robot Baseball Puzzle: Markov Games and Golden Section Search
Solving Jane Street's Robot Baseball puzzle with Markov game analysis and golden section search, an enjoyable mix of symbolic math and numerical methods.
Atlanta radar loop