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Hands-On Unsupervised Learning with Python

You're reading from Hands-On Unsupervised Learning with Python

Product type Book

Published in Feb 2019

Publisher Packt

ISBN-13 9781789348279

Pages 386 pages

Edition 1st Edition

Languages

Concepts

Machine Learning

Author (1):

Giuseppe Bonaccorso

Table of Contents (12) Chapters

Preface

1. Getting Started with Unsupervised Learning

2. Clustering Fundamentals

3. Advanced Clustering

4. Hierarchical Clustering in Action

5. Soft Clustering and Gaussian Mixture Models

6. Anomaly Detection

7. Dimensionality Reduction and Component Analysis

8. Unsupervised Neural Network Models

9. Generative Adversarial Networks and SOMs

10. Assessments

11. Other Books You May Enjoy

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Fuzzy c-means

The first algorithm that we will propose is a variation of k-means that's based on soft assignments. The name Fuzzy c-means derives from the concept of a fuzzy set, which is an extension of classical binary sets (that is, in this case, a sample can belong to a single cluster) to sets based on the superimposition of different subsets representing different regions of the whole set. For example, a set based on the age of some users can have the degrees young, adult, and senior, associated with three different (and partially overlapping) age ranges: 18-35, 28-60, and >50. So, for example, a 30-year-old user is both young and adult, to different degrees (and, indeed, is a borderline user, considering the boundaries). For further details about these kinds of sets and all of the related operations, I suggest the book Concepts and Fuzzy Logic, Belohlavek R., Klir...

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Authors (1)

Giuseppe Bonaccorso

Giuseppe Bonaccorso is Head of Data Science in a large multinational company. He received his M.Sc.Eng. in Electronics in 2005 from University of Catania, Italy, and continued his studies at University of Rome Tor Vergata, and University of Essex, UK. His main interests include machine/deep learning, reinforcement learning, big data, and bio-inspired adaptive systems. He is author of several publications including Machine Learning Algorithms and Hands-On Unsupervised Learning with Python, published by Packt.

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