Ranking Programming Languages by GitHub Users
I’ve recently become obsessed with the sheer amount of development activity happening on sites like GitHub. As a first project on working with this data, I thought it would be fun to rank all the programming languages by counting how many people on GitHub use each language. I’m using the GitHub Archive and GHTorrent projects as data sources for this analysis. The GitHub Archive provides a record o
An Interactive Tutorial on Numerical Optimization
Numerical Optimization is one of the central techniques in Machine Learning. For many problems it is hard to figure out the best solution directly, but it is relatively easy to set up a loss function that measures how good a solution is - and then minimize the parameters of that function to find the solution. I ended up writing a bunch of numerical optimization routines back when I was first tryin
Data Visualization using Multidimensional Scaling
While packed full of information, this doesn’t really provide any context for the exact relations between these cities. A much more useful visualization would be a map of these points. The challenge then is to produce coordinates for each item that best approximate the distances in the table. This type of problem is well solved by a set of techniques called Multidimensional Scaling (MDS). There is
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