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AI Crash Course

You're reading from   AI Crash Course A fun and hands-on introduction to machine learning, reinforcement learning, deep learning, and artificial intelligence with Python

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Product type Paperback
Published in Nov 2019
Publisher Packt
ISBN-13 9781838645359
Length 360 pages
Edition 1st Edition
Languages
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Author (1):
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Hadelin de Ponteves Hadelin de Ponteves
Author Profile Icon Hadelin de Ponteves
Hadelin de Ponteves
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Toc

Table of Contents (17) Chapters Close

Preface 1. Welcome to the Robot World FREE CHAPTER 2. Discover Your AI Toolkit 3. Python Fundamentals – Learn How to Code in Python 4. AI Foundation Techniques 5. Your First AI Model – Beware the Bandits! 6. AI for Sales and Advertising – Sell like the Wolf of AI Street 7. Welcome to Q-Learning 8. AI for Logistics – Robots in a Warehouse 9. Going Pro with Artificial Brains – Deep Q-Learning 10. AI for Autonomous Vehicles – Build a Self-Driving Car 11. AI for Business – Minimize Costs with Deep Q-Learning 12. Deep Convolutional Q-Learning 13. AI for Games – Become the Master at Snake 14. Recap and Conclusion 15. Other Books You May Enjoy 16. Index

The whole Q-learning process

Let's summarize the different steps of the whole Q-learning process. To be clear, the only purpose of this process is to update the Q-values over a certain number of iterations until they are no longer updated (we refer to that point as convergence).

The number of iterations depends on the complexity of the problem. For our problem, 1,000 will be enough, but for more complex problems you might want to consider higher numbers such as 10,000. In short, the Q-learning process is the part where we train our AI, and it's called Q-learning because it's the process during which the Q-values are learned. Then I'll explain what happens for the inference part (pure predictions), which comes, as always, after the training. The full Q-learning process starts with training mode.

Training mode

Initialization (First iteration):

For all couples of states s and actions a, the Q-values are initialized to 0.

Next iterations...

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