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Java Data Science Cookbook

You're reading from  Java Data Science Cookbook

Product type Book
Published in Mar 2017
Publisher Packt
ISBN-13 9781787122536
Pages 372 pages
Edition 1st Edition
Languages
Author (1):
Rushdi Shams Rushdi Shams
Profile icon Rushdi Shams
Toc

Table of Contents (16) Chapters close

Java Data Science Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Obtaining and Cleaning Data 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

Measuring text similarity with Cosine Similarity measure using Java 8


Data scientists often measure the distance or similarity between two data points--sometimes for classification or clustering, sometimes for detecting outliers, and for many other cases. When they deal with texts as data points, the traditional distance or similarity measurements cannot be used. There are many standard and classic as well as emerging and novel similarity measures available for comparing two or more text data points. In this recipe, we will be using a measurement named Cosine Similarity to compute distance between two sentences. Cosine Similarity is considered to be a de facto standard in the information retrieval community and therefore widely used. In this recipe, we will use this measurement to find the similarity between two sentences in string format.

Getting ready

Although the readers can get a comprehensive outlook of the measurement from https://en.wikipedia.org/wiki/Cosine_similarity, let us see the...

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