July 2014 – TheBoohers.org

GE GXULQR Twist and Lock Kitchen or Bath Filtration System Replacement Filter Won’t Fit

July 19, 2014 by tim

If you ever have to replace your under the sink GE filter (specifically the GE GXULQR), be ready for a frustrating ride. It looks like this: You can find the manual here and the ge product page here. It is billed as the “Twist and Lock” Replacement Filter, the inside female hex socket sometimes rotates … Read more

Gradient Descent

July 3, 2014 by tim

It has been awhile since I’ve studied optimization, but gradient descent is always good to brush up on. Most optimization involves derivatives. Often known as the method of steepest descent, gradient descent works by taking steps proportional to the negative of the gradient of the function at the current point. Mathematically, gradient descent is defined … Read more