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Machine Learning with Swift

You're reading from   Machine Learning with Swift Artificial Intelligence for iOS

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Product type Paperback
Published in Feb 2018
Publisher Packt
ISBN-13 9781787121515
Length 378 pages
Edition 1st Edition
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Authors (3):
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Jojo Moolayil Jojo Moolayil
Author Profile Icon Jojo Moolayil
Jojo Moolayil
Oleksandr Baiev Oleksandr Baiev
Author Profile Icon Oleksandr Baiev
Oleksandr Baiev
Alexander Sosnovshchenko Alexander Sosnovshchenko
Author Profile Icon Alexander Sosnovshchenko
Alexander Sosnovshchenko
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Table of Contents (14) Chapters Close

Preface 1. Getting Started with Machine Learning FREE CHAPTER 2. Classification – Decision Tree Learning 3. K-Nearest Neighbors Classifier 4. K-Means Clustering 5. Association Rule Learning 6. Linear Regression and Gradient Descent 7. Linear Classifier and Logistic Regression 8. Neural Networks 9. Convolutional Neural Networks 10. Natural Language Processing 11. Machine Learning Libraries 12. Optimizing Neural Networks for Mobile Devices 13. Best Practices

Unsupervised learning


Unsupervised learning is a way of making hidden patterns in data visible:

  • Clustering finds groups or hierarchy of similar objects
  • Unsupervised anomaly detection finds outliers (weird samples)
  • Dimensionality reduction finds which details of data are the most important
  • Factor analysis reveals the latent variables that influence the behavior of the observed variables
  • Rule mining finds associations between different entities in the data

As usually, these tasks overlap pretty often, and many practical problems inhabit the neutral territory between supervised and unsupervised learning.

We will focus on clustering in this chapter and on rule mining in the next chapter. Others will remain mostly beyond the scope of this book, but in Chapter 10Natural Language Processing, we will nevertheless briefly discuss autoencoders; they can be used for both dimensionality reduction and anomaly detection.

Here are some examples of real-world tasks where clustering would be your tool of choice...

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