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Hands-On Meta Learning with Python

You're reading from   Hands-On Meta Learning with Python Meta learning using one-shot learning, MAML, Reptile, and Meta-SGD with TensorFlow

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Product type Paperback
Published in Dec 2018
Publisher Packt
ISBN-13 9781789534207
Length 226 pages
Edition 1st Edition
Languages
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Author (1):
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Sudharsan Ravichandiran Sudharsan Ravichandiran
Author Profile Icon Sudharsan Ravichandiran
Sudharsan Ravichandiran
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Table of Contents (12) Chapters Close

Preface 1. Introduction to Meta Learning 2. Face and Audio Recognition Using Siamese Networks FREE CHAPTER 3. Prototypical Networks and Their Variants 4. Relation and Matching Networks Using TensorFlow 5. Memory-Augmented Neural Networks 6. MAML and Its Variants 7. Meta-SGD and Reptile 8. Gradient Agreement as an Optimization Objective 9. Recent Advancements and Next Steps 10. Assessments 11. Other Books You May Enjoy

Chapter 4: Relation and Matching Networks Using TensorFlow

  1. A relation network consists of two important functions: the embedding function, denoted by , and the relation function, denoted by . 
  2. Once we have the feature vectors of the support set, and query set,  , we combine them using an operator. Here,  can be any combination operator; we use concatenation as an operator to combine the feature vectors of the support set and the query set—that is.
  1. The relation function, , will generate a relation score ranging from 0 to 1, representing the similarity between samples in the support set, , and samples in the query set, .
  2. Our loss function can be represented as follows:

     

  3. In matching networks, we use two embedding...
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