We have two exciting presentations planned this evening!
The first presentation, given by Piero Ferrante, will be a deep dive into a text mining application developed entirely within the PyData ecosystem (principally using NLTK - Natural Language Toolkit). The application encompasses various aspects of text analytics such as the processing/structuring of raw text, sentiment analysis, topic extraction, and document classification. 
The second presentation, given by Caleb, will be an introduction/overview of GitHub. GitHub is a powerful collaboration, code review, and code management tool for open source and private projects.