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  • Book Overview & Buying Apache Mahout Essentials
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Apache Mahout Essentials

Apache Mahout Essentials

By : Jayani Withanawasam
3.7 (3)
Buy this Book
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Apache Mahout Essentials

Apache Mahout Essentials

3.7 (3)
By: Jayani Withanawasam
Buy this Book

Overview of this book

If you are a Java developer or data scientist, haven't worked with Apache Mahout before, and want to get up to speed on implementing machine learning on big data, then this is the perfect guide for you.
Table of Contents (8 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Introducing Apache Mahout
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1. Introducing Apache Mahout
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Machine learning in a nutshell
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Machine learning applications
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Machine learning libraries
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The story so far
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Apache Mahout
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How Apache Mahout works?
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From Hadoop MapReduce to Spark
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When is it appropriate to use Apache Mahout?
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Summary
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2. Clustering
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2. Clustering
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Unsupervised learning and clustering
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Applications of clustering
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Types of clustering
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K-Means clustering
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Distance measure
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K-Means clustering with MapReduce
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Additional clustering algorithms
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Text clustering
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Optimizing clustering performance
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Summary
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3. Regression and Classification
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3. Regression and Classification
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Supervised learning
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Predictive analytics' techniques
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Classification versus regression
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Linear regression with Apache Spark
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Logistic regression with SGD
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The Naïve Bayes algorithm
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Hidden Markov Model
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Summary
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4. Recommendations
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4. Recommendations
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Collaborative versus content-based filtering
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User-based recommenders
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Item-based recommenders
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Matrix factorization-based recommenders
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Singular value decomposition
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Summary
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5. Apache Mahout in Production
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5. Apache Mahout in Production
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Introduction
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Apache Mahout with Hadoop
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Setting up Hadoop
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Monitoring Hadoop
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Setting up Mahout with Hadoop's fully-distributed mode
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Troubleshooting Hadoop
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Optimization tips
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Summary
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6. Visualization
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6. Visualization
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The significance of visualization in machine learning
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D3.js
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A visualization example for K-Means clustering
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Summary
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Index
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Index

Chapter 4. Recommendations

In this chapter, we will cover the recommendation techniques used in Apache Mahout. We will discuss the related MapReduce- and Spark-based implementations with respect to a real-world example, with Java code examples as well as command-line executions.

In this chapter, we will cover the following topics:

  • Collaborative versus content-based filtering
  • User-based recommenders
  • Data models
  • Similarity
  • Neighborhoods
  • Recommenders
  • Item-based recommenders with Spark
  • Matrix factorization-based recommenders
    • SVD recommenders
    • ALS-WS
  • Evaluation techniques
  • Recommendation tips and tricks
 

"A lot of times, people don't know what they want until you show it to them."

 
 --Steve Jobs

Before we proceed with the chapter, let's think about the significance of the preceding quote for a moment.

  • How many times have you come across relevant items to buy, which were suggested by Amazon recommendations?
  • How many times have you found your friends when suggested by...
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Apache Mahout Essentials
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