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Machine Learning with Swift

Machine Learning with Swift

By : Alexander Sosnovshchenko , Jojo Moolayil, Oleksandr Baiev
3 (1)
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Machine Learning with Swift

Machine Learning with Swift

3 (1)
By: Alexander Sosnovshchenko , Jojo Moolayil, Oleksandr Baiev

Overview of this book

Machine learning as a field promises to bring increased intelligence to the software by helping us learn and analyse information efficiently and discover certain patterns that humans cannot. This book will be your guide as you embark on an exciting journey in machine learning using the popular Swift language. We’ll start with machine learning basics in the first part of the book to develop a lasting intuition about fundamental machine learning concepts. We explore various supervised and unsupervised statistical learning techniques and how to implement them in Swift, while the third section walks you through deep learning techniques with the help of typical real-world cases. In the last section, we will dive into some hard core topics such as model compression, GPU acceleration and provide some recommendations to avoid common mistakes during machine learning application development. By the end of the book, you'll be able to develop intelligent applications written in Swift that can learn for themselves.
Table of Contents (14 chapters)
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Clustering objects on a map


Where can we apply k-means in the context of mobile development? Clustering pins on a map may look like the most natural idea. Having the clusters of user locations, you can guess the location of the user's important locations like home and workplace, for example. We will implement pin clustering to visualize k-means, some of its unfortunate properties, and show why such an application of it may be not the best idea.

You can find a demo application under the 4_kmeans/MapKMeans folder of supplementary code. Everything interesting happens in the ViewController.swift. Clustering happens in the clusterize() method:

func clusterize() { 
  let k = Settings.k 
  colors = (0..<k).map{_ in Random.Uniform.randomColor()} 
  let data = savedAnnotations.map{ [Double]($0.coordinate) } 
  var kMeans = KMeans(k: k) 
  clusters = kMeans.train(data: data) 
  centroidAnnotations = kMeans.centroids 
    .map { CLLocationCoordinate2D(latitude: $0[0], longitude: $0[1]) } 
    .map...

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