“What I cannot create, I do not understand.”
- Richard Feynman

I am a Distinguished Engineer at Google where I lead an AI-research lab. I am lucky to work on some of the most interesting problems in AI with some of my best friends. I am spending a lot of time trying to rethink AI from first principles. For example, we are working on new model architectures and training schemes for LLMs and image and video generation models. We recently made some of Google's important LLMs substantially faster and cheaper.

I have been doing AI research for a long while. In 1998, as a high school student, I joined a startup building video understanding software where I programmed some neural networks (in plain C 😮). Previously at Google, I developed and led a team that built an AI system that reads and understands the open web. Thanks to this system, Google Search shows answers, cards, and lists on a large fraction of user queries, like [homer simpson], [world war 2], and [nba teams]. I also founded and led Google Duplex, an AI system that can speak naturally over the phone. Today, Duplex is a major contributor to Google’s updated business data, like opening hours, and data from Duplex’s phone calls was shown to users over 1 trillion times.

This site features my collection of math and hacking puzzles, as well as some write-ups of some of my favorite weekend projects.

If you're not sure where to start, try a fun puzzle like 🐇 Rabbit Season, Really Equal? Naturally!, 🗺 Expanding Map, or (×2, +1) Equivalence.

Acknowledgements

Some posts use images from the awesome royalty-free images sites: Pexels, Unsplash, and publicdomainvectors.org. The design of the site is based on the Mickey theme by Vincent Chan.