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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 this chapter, we will expand on the basic ideas that we built in Chapter 1, Introduction to Clustering, by surrounding clustering with the concept of similarity. Once again, we will be implementing forms of the Euclidean distance to capture the notion of similarity. It is important to bear in mind that the Euclidean distance just happens to be one of the most popular distance metrics; it's not the only one. Through these distance metrics, we will expand on the simple neighbor calculations that we explored in the previous chapter by introducing the concept of hierarchy. By using hierarchy to convey clustering information, we can build stronger groupings that make more logical sense. Similar to k-means, hierarchical clustering can be helpful for cases such as customer segmentation or identifying similar product types. However, there is a slight benefit in being able to explain things in a clearer fashion with hierarchical clustering. In this chapter, we will outline some cases where hierarchical clustering can be the solution you're looking for.

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The Unsupervised Learning Workshop
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