The "chapter 3" directory is taken from Toby Segaran's _Programming Collective Intelligence_. It implements clustering algorithms which take an matrix of data as input and produce subgroupings of the rows of that matrix (clusters).  

## Dependencies

* BeautifulSoup.py 
* PIL 
* feedfinder.py  - http://www.aaronsw.com/2002/feedfinder/feedfinder.py

(You can run <code>apt-get install python-beautifulsoup python-imaging</code> if you're on Ubuntu.)

## Building a list of feeds for a given language

Toby's clustering algorithm needs a list of feed urls.