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math

A collection of 3 posts
math

Find the determinant of a matrix

The determinant of a matrix is a number associated with a square (nxn) matrix. The determinant can tell us if columns are linearly correlated, if a system has any nonzero solutions, and if a matrix is invertible. See the wikipedia entry [http://en.wikipedia.org/wiki/Determinant] for more details
Jul 16, 2013 3 min read
math

Linear Regression from the Ground Up

Linear regression is a very basic technique that we use a lot in machine learning. In a lot of cases (and I have been guilty of this), we just use it without much thought as to how the internals actually work. In a 2-D coordinate system, we can plot observations
Jul 15, 2013 6 min read
math

Inverting your very own matrix

Introduction I had my natural predilection towards math crushed out of me at some point in school, and after that point, Math (yes, we are referring to the higher power of math) and I had a wary understanding. I dabbled quietly, and Math turned a blind eye to me ignoring
Jul 14, 2013 5 min read
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