I'm no stranger to robot vacuums or robot mops. A decade ago, I tested both as part of my job at America's Test Kitchen and, frankly, most models left a lot to be desired. At that time, robot vacuums ...

Inverting a matrix is one of the most common tasks in data science and machine learning. In this article I explain why inverting a matrix is very difficult and present code that you can use as-is, or ...