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Hands-On Ensemble Learning with Python

You're reading from   Hands-On Ensemble Learning with Python Build highly optimized ensemble machine learning models using scikit-learn and Keras

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789612851
Length 298 pages
Edition 1st Edition
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Authors (2):
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Konstantinos G. Margaritis Konstantinos G. Margaritis
Author Profile Icon Konstantinos G. Margaritis
Konstantinos G. Margaritis
George Kyriakides George Kyriakides
Author Profile Icon George Kyriakides
George Kyriakides
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Table of Contents (20) Chapters Close

Preface 1. Section 1: Introduction and Required Software Tools FREE CHAPTER
2. A Machine Learning Refresher 3. Getting Started with Ensemble Learning 4. Section 2: Non-Generative Methods
5. Voting 6. Stacking 7. Section 3: Generative Methods
8. Bagging 9. Boosting 10. Random Forests 11. Section 4: Clustering
12. Clustering 13. Section 5: Real World Applications
14. Classifying Fraudulent Transactions 15. Predicting Bitcoin Prices 16. Evaluating Sentiment on Twitter 17. Recommending Movies with Keras 18. Clustering World Happiness 19. Another Book You May Enjoy

Getting Twitter data

There are a number of ways to gather Twitter data. From web scraping to using custom libraries, each one has different advantages and disadvantages. For our implementation, as we also need sentiment labeling, we will utilize the Sentiment140 dataset (http://cs.stanford.edu/people/alecmgo/trainingandtestdata.zip). The reason that we do not collect our own data is mostly due to the time we would need to label it. In the last section of this chapter, we will see how we can collect our own data and analyze it in real time. The dataset consists of 1.6 million tweets, containing the following 6 fields:

  • The tweet's polarity
  • A numeric ID
  • The date it was tweeted
  • The query used to record the tweet
  • The user's name
  • The tweet's text content

For our models, we will only need the tweet's text and polarity. As can be seen in the following graph, there...

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