O’Reilly Radar’s visualization of the week is one by Tony Hirst showing all of your Facebook friends’ likes. The best part is he tells you exactly how to do it using Gephi and Google Refine.

If you’ve ever wondered which neighborhood has more men or women on a given night or where all the people from different parts of town are going, Uber might have it figured out. They’ve used data from their cab service to map people flows in San Francisco.

If you’re in to machine learning and data mining, then Waffles might be just what you need. Waffles is a collection of command line tools for machine learning and data mining.
Elegant Coding recommends 11 equations any computer science geek should know. How many of them do you know?
Cloudera has set up a page that links to lots of presentations from Hadoop World.
JP Morgan Chase and others reiterated “We’re hiring” at the recent Hadoop World Conference. This Information Week article recaps just how hot a commodity a Hadoop engineer is.
Roger Craig holds the Jeopardy record for single game money winnings. How did he do it? Well part of his success comes from an app he built to help him train.