Recall & Precision
Precision and recall are two fundamental quality measures in search and information retrieval applications. Google is fundamentally a search application. But Google doesn’t need to optimize for...
View ArticleWhy ad networks should optimize for precision and not recall
When I was working on my PhD living in Austin, I owned several motorcycles, and spent lots of time online researching parts, upgrades, repairs, etc. on sites like svrider.com and vfrworld.com. Without...
View ArticleQuestions on Startups from Luke Carrière
When I was working on my PhD in Austin I got involved with a group called 3 Day Startup (3DS). The idea is simple: get 40 bright, motivated, and entrepreneurial students in a room for 3 days, and have...
View ArticleLending Club Loan Analysis: Making Money with Logistic Regression
The Lending Club is an online marketplace for loans. As a borrower, you can apply for a loan, and if accepted, your loan gets listed in the marketplace. As an investor, you can browse loans in the...
View Article3 Day Startup NYC: Day 1 Mentoring
I love innovation. I love working with smart people. And I love working with limited resources around extremely tight deadlines. 3 Day Startup: 30 bright entrepreneurs. Ideas flow Friday night,...
View ArticleAn Insider’s Guide to Facebook’s IPO
The Wall Street Journal recently had a piece on investing in the Facebook IPO. They admit, “most retail investors will be shut out of the offering and won’t get the IPO price, meaning they likely will...
View ArticleNYC Dining: The cost of a “B”
If you eat out in New York City, the image above should evoke some sort of visceral reaction. In July of 2010, the NYC Department of Health began rating each of the 24,000 restaurants throughout the...
View ArticleRestart
Etsy acquired my startup Adtuitive in 2009. At the time, we had a pretty cool product that automated online advertising for small retailers, and we were operating at a modest scale of 200 million ads...
View ArticleA Corollary to ExperimentCalculator.com (with examples)
Dan McKinley recently put together a very useful tool in estimating how long to run your A/B tests. The obvious corollary here being, “your experiments will take much longer than you think”. Let’s...
View ArticleCoding in the Rain
It’s been rainy here in NYC as of late. Just about the only thing worse than 90 degree city heat is 90 degree city heat with intense thunderstorms roaring through. So I find myself indoors when it...
View ArticleLast Minute Eatin’ Launches; Gets You the Hottest Table in Town
Do you love eating out but hate making plans? There’s nothing worse than trying to find a great table when you need it most, only to find that all your favorite places are completely booked. New York...
View ArticleThe Life of a Last Minute New York City Restaurant Reservation
There’s been a lot of hoopla recently about so-called high frequency restaurant reservation trading. Are computers stealing my reservations? Will I ever get into Per Se again? It’s Saturday night, I...
View ArticleEight Ways You’ve Misconfigured Your A/B Test
You’ve read about the virtues of A/B testing feature releases. You love iterating quickly, testing quickly, and continually learning in a data-driven fashion. You appreciate the importance of keeping...
View ArticleA Mixpanel Data Exporter
Mixpanel is a great analytics tool for small to medium sized web and mobile shops. And not surprisingly, their analytics product has pretty good adoption (over 1,400 companies using it, according to...
View ArticleA Last Minute Infographic; Last Minute Eatin’ featured in the NYTimes
Last Minute Eatin’ has been running for over two months now and has tweeted over 1,500 tables since launch. LME knows exactly when and where tables are open, and you can now visualize these openings...
View ArticleYour First A/B Tests: A Step by Step Guide
Your A/B testing system is hot off the press, you’ve integrated with Optimizely, Google’s Content Experiments, or maybe deployed some code of your own. You open your eyes, look around, and see a whole...
View Article