Four short links: 12 July 2011

Rare Visualization, Google+ Tech, Scala+Erlang, and In-Database Analytics

  1. Slopegraphs — a nifty Tufte visualization which conveys rank, value, and delta over time. Includes pointers to how to make them, and guidelines for when and how they work. (via Avi Bryant)
  2. Ask Me Anything: A Technical Lead on the Google+ Team — lots of juicy details about technology and dev process. A couple nifty tricks we do: we use the HTML5 History API to maintain pretty-looking URLs even though it’s an AJAX app (falling back on hash-fragments for older browsers); and we often render our Closure templates server-side so the page renders before any JavaScript is loaded, then the JavaScript finds the right DOM nodes and hooks up event handlers, etc. to make it responsive (as a result, if you’re on a slow connection and you click on stuff really fast, you may notice a lag before it does anything, but luckily most people don’t run into this in practice). (via Nahum Wild)
  3. scalang (github) — a Scala wrapper that makes it easy to interface with Erlang, so you can use two hipster-compliant built-to-scale technologies in the same project. (via Justin Sheehy)
  4. Madliban open-source library for scalable in-database analytics. It provides data-parallel implementations of mathematical, statistical and machine learning methods for structured and unstructured data. (via Mike Loukides)
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