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Citing Working Papers

Public versions of working papers are increasingly the norm. So are citations to them. But there are four concerns with citing working papers: 1. Peer review: Peer review improves the quality of papers, but often enough it doesn’t catch serious, basic issues. Thus, a lack of peer review is

A/B Testing Recommendation Systems

Say that you are building a news recommender that lists which relevant news items are in each person’s news feed. Say that your first version of the news recommender is a rules-based system that uses signals like how many people in your network have seen the news, how many

Advice that works

Writing habits of some writers: “Early in the morning. A good writing day starts at 4 AM. By 11 AM the rest of the world is fully awake and so the day goes downhill from there.”Daniel Gilbert “Usually, by the time my kids get off to school and I

Stemming Link Rot

The Internet gives many things. But none that are permanent. That is about to change. Librarians got together and recently launched https://perma.cc/ which provides a permanent link to stuff. Why is link rot important? Here’s an excerpt from a paper by Gertler and Bullock: “more than one-fourth

countpy: Incentivizing more and better software

Developers of Python packages sometimes envy R developers for the simple perks they enjoy. For example, a reliable web service that gives a reasonable indication of the total number of times an R package has been downloaded (albeit only from one of the mirrors). To achieve the same, Python developers

Searching for Great Conversations

“When was the last time you had a great conversation? A conversation that wasn’t just two intersecting monologues, but when you overheard yourself saying things you never knew you knew, that you heard yourself receiving from somebody words that found places within you that you thought you had lost,

Siamese Networks for Record Linkage

For the uninitiated: A siamese neural network consists of twin networks which accept distinct inputs but are joined by an energy function at the top. This function computes some metric between the highest level feature representation on each side. The parameters between the twin networks are tied. Weight tying guarantees

The Risk of Misunderstanding Risk

Women who participate in breast cancer screening from 50 to 69 live on average 12 more days. This is the best case scenario. Gerd has more such compelling numbers in his book, Calculated Risks. Gerd shares such numbers to launch a frontal assault on the misunderstanding of risk. His key

What's Best? Comparing Model Outputs

Let’s assume that you have a large portfolio of messages: n messages of k types. And say that there are n models, built by different teams, that estimate how relevant each message is to the user on a particular surface at a particular time. How would you rank order

Expertise as a Service

The best thing you can say about Prediction Machines, a new book by a trio of economists, is that it is not barren. Most of the green patches you see are about the obvious: the big gain from ML is our ability to predict better, and better predictions will change