Covers: theory of AdaGrad
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Questions this item addresses:
  • How to implement AdaGrad in Python
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In this module, Alex Smola demonstrates AdaGrad in python using Jupiter notebook. This module helps you understand different parameters in AdaGrad and how to implement it in Python (4:20 till the ​end) first 4 mins of this video is also about "momentum"

Fail to play? Open the link directly: https://www.youtube.com/watch?v=8prHRIxCoWs
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Adagrad

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Total time needed: ~2 hours
Objectives
Learn the theory behind AdaGrad as an optimizer and how to implement it in Python
Potential Use Cases
Adagrad is an algorithm for gradient-based optimization. it is well-suited when dealing with sparse data (NLP or image recognition).
Who is This For ?
INTERMEDIATE
Click on each of the following annotated items to see details.
Resources5/7
ARTICLE 1. Intro to mathematical optimization
  • What is mathematical optimization?
  • Why do we need to optimize a cost function in ML algorithms?
10 minutes
VIDEO 2. Gradient Descent
  • What is Gradient Decent(GD)?
  • How does GD work in python?
10 minutes
ARTICLE 3. Learning Rate
  • What is learning rate?
  • How can I make it better?
20 minutes
ARTICLE 4. AdaGrad : Introduction (No math!)
  • What is Adagrad?
10 minutes
ARTICLE 5. Adaptive Gradient (adaGrad) : Introduction [ With more advanced math concepts ]
  • What is AdaGrad?
  • What is the math behind this optimizer?
30 minutes
ARTICLE 6. AdaGrad in Python
  • How to implement AdaGrad in Python
10 minutes
PAPER 7. Adaptive Subgradient Methods for Online Learning and Stochastic Optimization (optional)
  • Where does this optimizer come from?
30 minutes

Concepts Covered

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