What is the difference between Gradient Descent and Newton's Gradient Descent?

Question

I understand what Gradient Descent does. Basically it tries to move towards the local optimal solution by slowly moving down the curve. I am trying to understand what is the act

Answer 1

Edit 2017: The original link is dead - but the way back machine still got it :) https://web.archive.org/web/20151122203025/http://www.cs.colostate.edu/~anderson/cs545/Lectures/week6day2/week6day2.pdf

this power point the main ideas are explained simply http://www.cs.colostate.edu/~anderson/cs545/Lectures/week6day2/week6day2.pdf

I hope this help :)