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Hands-On Neuroevolution with Python

You're reading from   Hands-On Neuroevolution with Python Build high-performing artificial neural network architectures using neuroevolution-based algorithms

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Product type Paperback
Published in Dec 2019
Publisher Packt
ISBN-13 9781838824914
Length 368 pages
Edition 1st Edition
Languages
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Author (1):
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Iaroslav Omelianenko Iaroslav Omelianenko
Author Profile Icon Iaroslav Omelianenko
Iaroslav Omelianenko
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Toc

Table of Contents (18) Chapters Close

Preface 1. Section 1: Fundamentals of Evolutionary Computation Algorithms and Neuroevolution Methods FREE CHAPTER
2. Overview of Neuroevolution Methods 3. Python Libraries and Environment Setup 4. Section 2: Applying Neuroevolution Methods to Solve Classic Computer Science Problems
5. Using NEAT for XOR Solver Optimization 6. Pole-Balancing Experiments 7. Autonomous Maze Navigation 8. Novelty Search Optimization Method 9. Section 3: Advanced Neuroevolution Methods
10. Hypercube-Based NEAT for Visual Discrimination 11. ES-HyperNEAT and the Retina Problem 12. Co-Evolution and the SAFE Method 13. Deep Neuroevolution 14. Section 4: Discussion and Concluding Remarks
15. Best Practices, Tips, and Tricks 16. Concluding Remarks 17. Other Books You May Enjoy

NS implementation basics

NS implementation should include data structure to hold information about the explored novel item and the structure to maintain and manage a list of novel items. In our implementation, this functionality is encapsulated in three Python classes:

  • NoveltyItem: The structure that holds all relevant information about the novelty score of the individual that was evaluated during the evolution.
  • NoveltyArchive: The class that maintains a list of the relevant NoveltyItem instances. It provides methods to evaluate the novelty scores of individual genomes compared to the already collected NoveltyItem instances and the current population.
  • ItemsDistance: The auxiliary structure that holds the distance (novelty) metric value between the two NoveltyItem instances. It is used in calculations of the average k-nearest neighbor distance, which is used as a novelty score...
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