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The Unsupervised Learning Workshop

You're reading from   The Unsupervised Learning Workshop Get started with unsupervised learning algorithms and simplify your unorganized data to help make future predictions

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Product type Paperback
Published in Jul 2020
Publisher Packt
ISBN-13 9781800200708
Length 550 pages
Edition 1st Edition
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Authors (3):
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Benjamin Johnston Benjamin Johnston
Author Profile Icon Benjamin Johnston
Benjamin Johnston
Christopher Kruger Christopher Kruger
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Christopher Kruger
Aaron Jones Aaron Jones
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Aaron Jones
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Toc

Table of Contents (11) Chapters Close

Preface
1. Introduction to Clustering 2. Hierarchical Clustering FREE CHAPTER 3. Neighborhood Approaches and DBSCAN 4. Dimensionality Reduction Techniques and PCA 5. Autoencoders 6. t-Distributed Stochastic Neighbor Embedding 7. Topic Modeling 8. Market Basket Analysis 9. Hotspot Analysis Appendix

Hotspot Analysis

To start, hotspots are areas of higher concentrations of data points, such as particular neighborhoods where the crime rate is abnormally high or swaths of the country that are impacted by an above-average number of tornadoes. Hotspot analysis is the process of finding these hotspots, should any exist, in a population using sampled data. This process is generally done by leveraging kernel density estimation.

Hotspot analysis can be described in four high-level steps:

  1. Collect the data: The data should include the locations of the objects or events. As we have briefly mentioned, the amount of data needed to run and achieve actionable results is relatively flexible. The optimal state is to have a sample dataset that is representative of the population.
  2. Identify the base map: The next step is to identify which base map would best suit the analytical and presentational needs of the project. On this base map, the results of the model will be overlaid, so...
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