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Java Data Science Cookbook

You're reading from   Java Data Science Cookbook Explore the power of MLlib, DL4j, Weka, and more

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781787122536
Length 372 pages
Edition 1st Edition
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Author (1):
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Rushdi Shams Rushdi Shams
Author Profile Icon Rushdi Shams
Rushdi Shams
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Toc

Table of Contents (10) Chapters Close

Preface 1. Obtaining and Cleaning Data FREE CHAPTER 2. Indexing and Searching Data 3. Analyzing Data Statistically 4. Learning from Data - Part 1 5. Learning from Data - Part 2 6. Retrieving Information from Text Data 7. Handling Big Data 8. Learn Deeply from Data 9. Visualizing Data

Indexing data with Apache Lucene

In this recipe, we will demonstrate how to index a large amount of data with Apache Lucene. Indexing is the first step for searching data fast. In action, Lucene uses an inverted full-text index. In other words, it considers all documents, splits them into words or tokens, and then builds an index for each token so that it knows in advance exactly which document to look for if a term is searched.

Getting ready

The following are the steps to be implemented:

  1. To download Apache Lucene, go to http://lucene.apache.org/core/downloads.html, and click on the Download button. At the time of writing, the latest version of Lucene was 6.4.1. Once you click on the Download button, it will take you to the mirror websites that host the distribution:

    Getting ready

  2. Choose any appropriate mirror for downloading. Once you click a mirror website, it will take you to a directory of distribution. Download the lucene-6.4.1.zip file onto your system:

    Getting ready

  3. Once you download it, unzip the...
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