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Scala for Machine Learning, Second Edition

You're reading from   Scala for Machine Learning, Second Edition Build systems for data processing, machine learning, and deep learning

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Product type Paperback
Published in Sep 2017
Publisher Packt
ISBN-13 9781787122383
Length 740 pages
Edition 2nd Edition
Languages
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Author (1):
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Patrick R. Nicolas Patrick R. Nicolas
Author Profile Icon Patrick R. Nicolas
Patrick R. Nicolas
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Table of Contents (21) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Data Pipelines 3. Data Preprocessing 4. Unsupervised Learning 5. Dimension Reduction 6. Naïve Bayes Classifiers 7. Sequential Data Models 8. Monte Carlo Inference 9. Regression and Regularization 10. Multilayer Perceptron 11. Deep Learning 12. Kernel Models and SVM 13. Evolutionary Computing 14. Multiarmed Bandits 15. Reinforcement Learning 16. Parallelism in Scala and Akka 17. Apache Spark MLlib A. Basic Concepts B. References Index

Monadic data transformation

The first step is to define a trait and a method that describe the transformation of data by the computation units of a workflow. The data transformation is the foundation of any workflow for processing and classifying a dataset, training and validating a model, and displaying results.

There are two symbolic models for defining a data processing or data transformation:

  • Explicit model: The developer creates a model explicitly from a set of configuration parameters. Most deterministic algorithms and unsupervised learning techniques use an explicit model.
  • Implicit model: The developer provides a training set that is a set of labeled observations (observations with expected outcome). A classifier extracts a model through the training set. Supervised learning techniques rely on a model implicitly generated from labeled data.

Error handling

The simplest form of data transformation is morphism between two types U and V. The data transformation enforces a contract for validating...

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