The author is a scientist analyzing his data. I never met anyone in that crowd using C#. Are there even any good data science/numerics libs out there? C++ has a lot of number crunching libs, python even more.
This is not my field, but I have used Accord.NET (http://accord-framework.net/) while learning machine learning and have no complaints, but also have little room for comparison. Any C++ library you'd consider as definitive, for some basis to compare? One other thing is that running C++ libraries in C# is, in most cases, quite trivial.
It's probably more common for data scientists in the .NET world to use F#. FsLab (https://fslab.org/) seems cool from some limited experimentation (disclaimer: I'm not a data scientist, but am data curious).
