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Hands-On Data Science and Python Machine Learning

You're reading from   Hands-On Data Science and Python Machine Learning Perform data mining and machine learning efficiently using Python and Spark

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781787280748
Length 420 pages
Edition 1st Edition
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Author (1):
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Frank Kane Frank Kane
Author Profile Icon Frank Kane
Frank Kane
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Table of Contents (11) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Statistics and Probability Refresher, and Python Practice 3. Matplotlib and Advanced Probability Concepts 4. Predictive Models 5. Machine Learning with Python 6. Recommender Systems 7. More Data Mining and Machine Learning Techniques 8. Dealing with Real-World Data 9. Apache Spark - Machine Learning on Big Data 10. Testing and Experimental Design

K-Means Clustering in Spark

Alright, let's look at another example of using Spark in MLlib, and this time we're going to look at k-means clustering, and just like we did with decision trees, we're going to take the same example that we did using scikit-learn and we're going to do it in Spark instead, so it can actually scale up to a massive Dataset. So, again, I've made sure to close out of everything else, and I'm going to go into my book materials and open up the SparkKMeans Python script, and let's study what's going on in.

Alright, so again, we begin with some boilerplate stuff.

from pyspark.mllib.clustering import KMeans 
from numpy import array, random 
from math import sqrt 
from pyspark import SparkConf, SparkContext 
from sklearn.preprocessing import scale 

We're going to import the KMeans package from the clustering MLlib...

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