James Dellinger
James Dellinger
James Dellinger
Make decision trees make use of categorical variables.
(Mountain View, CA)
Dec 2019–Present
Building a random forests library with the best techniques for categorical splits—classic CART, PCA rank encoding. Writing a textbook on decision tree algorithms.
(Mountain View, CA)
Jul 2022–Present
Following a proprietary strategy based on George Douglass Taylor’s principles. Published a book introducing his concepts.
(Mountain View, CA)
Jun 2017–Dec 2019
Mastered tabular data, computer vision, and language models. Solo bronze medals in two Kaggle competitions.
(Mountain View, CA)
TV guide, remote control app with with millions of daily active users at its peak.
May 2014–Dec 2016
Built TV/streaming voice control interface with crack engineering team. Founders demoed in meetings with national retailer CEOs.
Doubled setup funnel completion rate with a designer and engineer. Shipped user-tested UX improvements and reduced backend latency.
Pitched app and monetization strategy to prospective partners and investors. Prototyped new features and ad products.
Helped CEO with strategic projects in business development, marketing, and general admin. Made slide decks for board meetings and founders’ speeches.
(Mountain View, CA)
Dec 2012–Dec 2013
Sanity checked ad placement algorithms.
(Beijing, China)
Sep 2008–Aug 2011
Taught English, high school math, and SAT prep.
(Seoul, Korea)
Apr–Sep 2007
Ran a book cafe near Yonsei University.
May 2004
Advanced coursework in Probability, Statistics, Japanese.
Languages: Fluent Japanese (JLPT Level 1), conversational Korean, Chinese.
Hobby: Repairing vintage electronics.