Installation instructions for doing data science in a Python environment on Ubuntu. We'll install base packages like numpy, scipy, scikit-learn and pandas. We also install the IPython Notebook interactive environment. This is a best practice recommendation for doing research-type work. We make use of virtualenvwrapper, but don't show how to install that (see http://goo.gl/FCLM6). We install gensim, a library for doing topic modelling.