Program by Chirag Mehta that tracks the frequency of word usage in presidential speeches dating back to 1776.

“The above tag cloud shows the popularity, frequency, and trends in the usages of words within speeches, official documents, declarations, and letters written by the Presidents of the US between 1776 – 2006 AD. The dataset consists of over 360 documents downloaded from Encyclopedia Britannica and ThisNation.com. Once the documents have been dated and converted to plain-text, my tag-cloud-generation script goes through every text chronologically and makes a list of all the unique words that have been used and counts how many times each word is used.”(From the project web site.)

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