Category Archives: Computer Science

Visualizing Facebook Friends: Eye Candy in R

Posted on December 18, 2010 by Paul Butler

Earlier this week I published a data visualization on the Facebook Engineering blog which, to my surprise, has received a lot of media covereage. I’ve received a lot comments about the image, many asking for more details on how I … Continue reading →

Posted in Computer Science, Data Mining, Math, R | 44 Comments

Data Structures for Range-Sum Queries (slides)

Posted on July 10, 2010 by Paul Butler

This week I attended the Canadian Undergraduate Mathematics Conference. I enjoyed talks from a number of branches of mathematics, and gave a talk of my own on range-sum queries. Essentially, range-aggregate queries are a class of database queries which involve … Continue reading →

Posted in Computer Science, Math | 1 Comment