Colin Fraser

Wrapify

An R package for making API wrappers declaratively

R

R Package

I often find myself needing to write functions to make API calls in R. This tends to involve a lot of boilerplate and repetition. The {wrapify} package is an attempt to…

Estimating how many there are of something when you can’t see them all perfectly

A brief introduction to quantification

Essay

Statistics

I wrote a tweet recently complaining about how it’s hard to estimate how many of what kind of posts there are.

Making Decisions With Classifiers

Essay

ML

When you’re building a classifier, you face a tradeoff between precision and recall. You can have a high precision classifier which is usually right when it flags a positive, or you can have a high recall classifier which catches most of the positives, and often there is a spectrum in between. This post is about how to choose a point on that spectrum.