Nesterov Accelerated Gradient (NAG) Explained in Detail | Animations | Optimizers in Deep Learning
Channel: CampusX
Date: 2022-07-26

The acceleration of momentum can overshoot the minima at the bottom of basins or valleys. Nesterov momentum is an extension of momentum that involves calculating the decaying moving average of the gradients of projected positions in the search space rather than the actual positions themselves.

This has the effect of harnessing the accelerating benefits of momentum whilst allowing the search to slow down when approaching the optima and reduce the likelihood of missing or overshooting it.

Digital Notes for Deep Learning: https://shorturl.at/NGtXg

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⌚Time Stamps⌚

00:00 - Intro
00:47 - What is NAG?
09:12 - Mathematical Intuition of NAG
12:52 - Momentum
17:59 - Geometric Intuition of NAG
24:39 - Disadvantages - (1)
25:55 - KERAS Code Implementation
27:30 - Outro