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Hands-On Data Analysis with Scala

You're reading from   Hands-On Data Analysis with Scala Perform data collection, processing, manipulation, and visualization with Scala

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Product type Paperback
Published in May 2019
Publisher Packt
ISBN-13 9781789346114
Length 298 pages
Edition 1st Edition
Languages
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Author (1):
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Rajesh Gupta Rajesh Gupta
Author Profile Icon Rajesh Gupta
Rajesh Gupta
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Table of Contents (14) Chapters Close

Preface 1. Section 1: Scala and Data Analysis Life Cycle FREE CHAPTER
2. Scala Overview 3. Data Analysis Life Cycle 4. Data Ingestion 5. Data Exploration and Visualization 6. Applying Statistics and Hypothesis Testing 7. Section 2: Advanced Data Analysis and Machine Learning
8. Introduction to Spark for Distributed Data Analysis 9. Traditional Machine Learning for Data Analysis 10. Section 3: Real-Time Data Analysis and Scalability
11. Near Real-Time Data Analysis Using Streaming 12. Working with Data at Scale 13. Another Book You May Enjoy

Streaming a k-means clustering algorithm using Spark

The k-means algorithm is an unsupervised machine learning (ML) clustering algorithm. The objective of this algorithm is to build k centers around which data points are centered, thereby forming k clusters. The most common implementation of this algorithm is generally done using batch-oriented processing. Streaming-based clustering algorithms are also available for this, with the following properties:

  • The k clusters are built using initial data
  • As new data arrives in minibatches, existing k clusters are updated to compute new k clusters
  • It also possible to control the decay or decrease in the significance of older data

At a high level, the preceding steps are quite similar to the word count problem that we solved using the streaming solution. The goal of the k-means algorithm is to partition the data into k clusters. If the...

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