Happy 2014! In between celebrating Christmas, hanging with family, and ringing in the New Year I managed to put together a visualization of the words used on avc.com. AVC, written by Fred Wilson, is probably one of the most popular “start up” blogs on the Internet. It covers a wide array of topics from “MBA Mondays”, USV portfolio companies and of course general startup and technology news. Given the range of topics and and that the blog has been active since 2003, it naturally seemed like generating a word cloud would produce interesting results. With the goal of generating word clouds in mind, I set off the day after Christmas.
Taking a quick glance at the clouds, a few things do jump out:
Posted In: Demo
For the last few weeks we’ve been working on a project that involved dealing with bills in the US House and Senate. Naturally, I decided it was time to make a word cloud from the frequencies of the words in the bills!
Checkout the final product here.
I decided to use only the bills from the 111th congress (the current one), all the bills (6703 of them) were downloaded from the THOMAS library at http://thomas.loc.gov/home/gpoxmlc111/ The files are XML documents that have the full text of the bills along with some meta data.
Not really to many files but I decided to use Hadoop and try and Map/Reduce the bills to count up the word frequencies. Getting Hadoop to run locally was pretty straightforward – just tell it where JAVA_HOME is and I was off to the races. Fortunately enough, one of the pre-canned examples was a word frequency counter so I decided to modify that for what I wanted.
The example map/reduce was written to process plain text files so I had to modify it to work with the XML documents. What this involved was writing a custom InputFormat class to open each bill, extract the appropriate plain text from the XML, and then pass this back as the “data”. I also modified the word counter to ignore words shorter than 6 characters.
I tested locally with a small subset of bills and everything seemed to be working fine. The trouble started when I tried to bring up Daum’s machine as a slave to my machine. After some finagling and hair pulling I finally got it working. The takeaways were:
Anyway, it was a slightly frustrating but rewarding experience – I even got to code some Java! The visualization of the word frequencies is here.
Posted In: Demo