Tim Mastny

I’m a software engineer at Wave building financial infrastructure for developing countries. I write about low-level programming, data science, and algorithms.

More about me.

Featured Writing

Visualizing CPU Pipelining
- Interactive visualizations showing how CPUs execute instructions
A* Tricks for Videogame Path Finding
- Overview of path finding techniques with animations from my own videogame
- See the discussion on Hacker News.
Discrete Cosine Transform and Time Series Classification
- Using data compression techniques to classify time series

All my posts.

Key Projects

sass
- low-level wrapper around libsass. Part of the Shiny backend, a web framework for R with millions of downloads per year.
Hudl’s Greatest Comebacks
- an internal data analytics tool used to find exciting football games and moments, leading to the creation of numerous viral football highlight videos.
tsrecipes
- a collection of time series algorithms, focused on the underexplored goals of clustering and classification with technquies from data compression and signal processing.
- Extended articles are available on the package website.

Tools and Libraries

browse: tool to open a local file in Github
feat: python library to manage column features in scikit learn
leadr: R package to manage machine learning model metadata

All my projects.

My github.

Projects

Latest Blog Posts

2024-11-30 Visualizing CPU Pipelining
2023-12-16 A* Tricks for Videogame Path Finding
2023-11-29 Debugging MIT 6.824: Distributed Systems
2023-01-28 How Garbage Collection works in Crafting Interpreters
2022-12-28 Remotely connecting to Windows 10 with an iPad
2021-12-01 Writing R tutorials with GPT-3
2021-11-07 Why I Use Gumshoe, not D&D, for Role-playing Investigations
2021-11-05 How Game Mechanics Create Tension
2021-07-02 Adding Integers in Logarithmic Time
2020-08-14 Discrete Cosine Transform and Time Series Classification