Microsoft R Open Training Series

Hello World! This is another pull from my primary develpment blog, located here. Ever wonder the difference between R and Microsoft R?  Considering learning R as a programming language?  You should probably watch this video.  It is the first in a 4 part series to give you the jump start you need to becoming a…


Sigmoid Classifiers Decoded

Hello World, Another pull from my primary dev blog. Sigmoid really isn’t that complicated (once your understand it of course).  Some back knowledge in case you are coming at this totally fresh is that the Sigmoid function is used in machine learning primarily as a hypothesis function for classifiers.  What is interesting is that this…


Getting Linear with it

Hello World! This is a pull from my primary dev blog: www.dacrook.com.  This article is Linear Regression Cost Functions with Linear Algebra :). So I wrote an article earlier “Linear Regression From Scratch”.  Many folks have pointed out that this is in fact not the optimal approach.  Now being the perfectionist I decided to re-implement….


Intro to Gradient Descent

Hello World! This is a pull from my privately owned blog: www.dacrook.com -> to find latest and greatest, thats a great place to head. In this article we are going to cover a simple version of Gradient Descent. It is important to note that this version of gradient descent is using Sum of Squares as…