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Oct 10, 2014
An exploration of scipy sparse matrices
My colleague Matti Lyra recently faced an interesting computational problem. He wanted to see how quickly a stream of temporalyordered documents evolves, and he chose to do it by looking at how often new words appear in the steam. This post is about how to do this efficiently in Python.

Jul 14, 2014
Profiling Python
This article explains the basics of profiling Python code. The hardest part is installing all the great tools that make it trivial to find the bottleneck in your code.
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