MapReduce

Computational Journalism Server Version 1.6.5 Released

May 31, 2012 | 0 Comments

I’ve just released version 1.6.5 of the Computational Journalism Server. This is going to be the last release for a while. Release notes: I removed CoffeeScript and Node.js. I wasn’t using them. I dropped back to Erlang R14B-1.1. Everything tes... [Read more...]

Heartbeat of a Cycling City: Bixi data at Hack/Reduce

May 8, 2012 | 0 Comments

The recent Hack/Reduce hackathon in Montreal was a tonne of fun. Our team tackled a data set of consisting of Bixi (Montreal’s bicycle share system) station states at one minute temporal resolution. We used Hadoop and mapreduce to pull out some features of user behaviours. One of the ... [Read more...]

Lessons Learned from EC2

March 24, 2010 | 0 Comments

A week or so ago I had my first experience using someone else’s cluster on Amazon EC2. EC2 is the Amazon Elastic Compute Cloud. Users set up a virtual computing platform that runs on Amazon’s servers “in the cloud.” Amazon EC2 is not just another cluster. EC2 allows ...
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