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Mastering Spark for Data Science

You're reading from   Mastering Spark for Data Science Lightning fast and scalable data science solutions

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781785882142
Length 560 pages
Edition 1st Edition
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Authors (5):
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David George David George
Author Profile Icon David George
David George
Matthew Hallett Matthew Hallett
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Matthew Hallett
Antoine Amend Antoine Amend
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Antoine Amend
Andrew Morgan Andrew Morgan
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Andrew Morgan
Albert Bifet Albert Bifet
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Albert Bifet
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Toc

Table of Contents (15) Chapters Close

Preface 1. The Big Data Science Ecosystem 2. Data Acquisition FREE CHAPTER 3. Input Formats and Schema 4. Exploratory Data Analysis 5. Spark for Geographic Analysis 6. Scraping Link-Based External Data 7. Building Communities 8. Building a Recommendation System 9. News Dictionary and Real-Time Tagging System 10. Story De-duplication and Mutation 11. Anomaly Detection on Sentiment Analysis 12. TrendCalculus 13. Secure Data 14. Scalable Algorithms

Chapter 6. Scraping Link-Based External Data

This chapter aims to explain a common pattern for enhancing local data with external content found at URLs or over APIs. Examples of this are when URLs are received from GDELT or Twitter. We offer readers a tutorial using the GDELT news index service as a source of news URLs, demonstrating how to build a web scale news scanner that scrapes global breaking news of interest from the Internet. We explain how to build this specialist web scraping component in a way that overcomes the challenges of scale. In many use cases, accessing the raw HTML content is not sufficient enough to provide deeper insights into emerging global events. An expert data scientist must be able to extract entities out of that raw text content to help build the context needed track broader trends.

In this chapter, we will cover the following topics:

  • Create a scalable web content fetcher using the Goose library
  • Leverage the Spark framework for Natural Language Processing...
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