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The Unsupervised Learning Workshop

The Unsupervised Learning Workshop

By : Aaron Jones , Richard Brooker, John Wesley Doyle , Priyanjit Ghosh, Sani Kamal, Ashish Pratik Patil , Philip Solomon, Geetank Raipuria, Christopher Kruger , Benjamin Johnston
4.3 (6)
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The Unsupervised Learning Workshop

The Unsupervised Learning Workshop

4.3 (6)
By: Aaron Jones , Richard Brooker, John Wesley Doyle , Priyanjit Ghosh, Sani Kamal, Ashish Pratik Patil , Philip Solomon, Geetank Raipuria, Christopher Kruger , Benjamin Johnston

Overview of this book

Do you find it difficult to understand how popular companies like WhatsApp and Amazon find valuable insights from large amounts of unorganized data? The Unsupervised Learning Workshop will give you the confidence to deal with cluttered and unlabeled datasets, using unsupervised algorithms in an easy and interactive manner. The book starts by introducing the most popular clustering algorithms of unsupervised learning. You'll find out how hierarchical clustering differs from k-means, along with understanding how to apply DBSCAN to highly complex and noisy data. Moving ahead, you'll use autoencoders for efficient data encoding. As you progress, you’ll use t-SNE models to extract high-dimensional information into a lower dimension for better visualization, in addition to working with topic modeling for implementing natural language processing (NLP). In later chapters, you’ll find key relationships between customers and businesses using Market Basket Analysis, before going on to use Hotspot Analysis for estimating the population density of an area. By the end of this book, you’ll be equipped with the skills you need to apply unsupervised algorithms on cluttered datasets to find useful patterns and insights.
Table of Contents (11 chapters)
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Preface

Introduction

In previous chapters, we evaluated a number of different approaches to data clustering, including k-means and hierarchical clustering. While k-means is the simplest form of clustering, it is still extremely powerful in the right scenarios. In situations where k-means can't capture the complexity of the dataset, hierarchical clustering proves to be a strong alternative.

One of the key challenges in unsupervised learning is that you will be presented with a collection of feature data but no complementary labels telling you what a target state will be. While you may not get a discrete view of what the target labels are, you can get some semblance of structure out of the data by clustering similar groups together and seeing what is similar within groups. The first approach we covered to achieve this goal of clustering similar data points is k-means. K-means clustering works best for simple data challenges where speed is paramount. Simply looking at the closest data...

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The Unsupervised Learning Workshop
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