Writings
- Neural Nets for People Who Think in Trees — Building one from scratch, one limitation at a time
- Harry Potter and the Hypervolume — My story of getting AI to do what I want
Career Experience
I have worked at:
- Opendoor, where I am a member of the pricing team, building machine learning infrastructure for home-buying and -selling at scale.
- MD State Department of IT, where I led development of the Maryland Data Exchange.
- United States Digital Service, where I supported the White House Working Group on Puerto Rico.
- NB the United States Digital Service has since been rebranded the United States DOGE Service.
- GoBuild, where I developed a computer vision-augmented AVM which predicted home renovation ROI.
- We licensed the computer vision model from restb.ai.
- Divvy Homes, where I developed the company's automated valuation model (AVM) and credit model.
- I deployed these models on Heroku using Plumber.
- Uber, where I pioneered the application of CUPED for marketplace experimentation.
- This application and implementation were independently developed.
- Google, where I developed the following tools to price Google Fiber:
- CensusMatchR: exact-match geographic regions using census data (conference poster) (github).
- Rcbc: author and analyze conjoint surveys (instruction slides) (conference poster) (github).
Open Source Contributions
I attempt to be a good open-source citizen, examples include:
Technical Depth
These texts deeply inform my work:
- Causal Inference for Statistics, Social, and Biomedical Sciences
- Designing Data-Intensive Applications
- The Structure of Scientific Revolutions
- Working in Public: The Making and Maintenance of Open Source Software
Technical Breadth
These texts were foundational in my career development:
- Nudge: Improving Decisions about Health, Wealth, and Happiness
- Mostly Harmless Econometrics: An Empiricist's Companion
- Learn Python The Hard Way
- The Information: A History, a Theory, a Flood
Mindfulness Practice
I practice non-religious mindfulness and can recommend the following books:
- Wherever You Go, There You Are: Mindfulness Meditation in Everyday Life
- Gentle Bridges: Conversations with the Dalai Lama on the Sciences of Mind
- The Eternal Tao Te Ching: The Philosophical Masterwork of Taoism and Its Relevance Today
- What the Buddha Taught
- Gesture of Balance: a Guide to Awareness, Self-healing, and Meditation