http://shanbady.github.com/NLTK-Boston-Python-Meetup/

Shankar Ambady of Session M will give a tutorial on the Python NLTK (Natural Language Tool Kit). 
Shankar had previously presented a comprehensive overview of the NLTK  last December at the Python meetup.  
The Python NLTK is a very powerful collection of libraries that can be applied to a variety of NLP applications 
such as sentiment analysis.  His presentation from last December may be found here (click on Boston Python Meetup
Materials) : http://www.shankarambady.com/ 




http://microsoftcambridge.com/Events/TwitterTextMining/tabid/784/Default.aspx