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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 FREE CHAPTER 2. Data Acquisition 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

Names de-duplication


As we were pulling entities from an NLP extraction process without any validation, the name we were able to retrieve may be written in many different ways. They can be written in different order, might contain middle names or initials, a salutation or a nobility title, nicknames, or even some typos and spelling mistakes. Although we do not aim to fully de-duplicate the content (such as learning that both Ziggy Stardust and David Bowie stand for the same person), we will be introducing two simple techniques used to de-duplicate a large amount of data at a minimal cost by combining the concept MapReduce paradigm and functional programming.

Functional programming with Scalaz

This section is all about enriching data as part of an ingestion pipeline. We are therefore less interested in building the most accurate system using advanced machine learning techniques, but rather the most scalable and efficient one. We want to keep a dictionary of alternative names for each record...

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