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Mastering Predictive Analytics with R, Second Edition

You're reading from Mastering Predictive Analytics with R, Second Edition Machine learning techniques for advanced models

Product type Paperback

Published in Aug 2017

Publisher Packt

ISBN-13 9781787121393

Length 448 pages

Edition 2nd Edition

Languages

R

Concepts

Data Analysis

Authors (2):

James D. Miller

Rui Miguel Forte

View More author details

Table of Contents (22) Chapters

Mastering Predictive Analytics with R Second Edition

Credits

About the Authors

About the Reviewer

www.PacktPub.com

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Preface

1. Gearing Up for Predictive Modeling FREE CHAPTER

2. Tidying Data and Measuring Performance

3. Linear Regression

4. Generalized Linear Models

5. Neural Networks

6. Support Vector Machines

7. Tree-Based Methods

8. Dimensionality Reduction

9. Ensemble Methods

10. Probabilistic Graphical Models

11. Topic Modeling

12. Recommendation Systems

13. Scaling Up

14. Deep Learning

Index

Chapter 8. Dimensionality Reduction

Building a useful predictive model requires analyzing an appropriate number of observations (or cases). This number will vary, based upon your project or your objective. Strictly speaking, the more variations (not necessarily the more data) analyzed, the better the outcome or results of the model.

This chapter will discuss the concept of reducing the size or amount of the data being observed without affecting the outcome of the analysis (or the success of the project), through various common approaches such as correlation analysis, principal component analysis, independent component analysis, common factor analysis, and non-negative matrix factorization.

Let us begin by clarifying what is meant by dimensional reduction.

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Authors (2)

James D. Miller

James D. Miller

James D. Miller is an IBM certified expert, Master Consultant, Application/System Architect with +35 years of applications & system design/development experience across multiple platforms, technologies and data formats, including Big Data. His experience includes IBM Planning Analytics, BI, Web architecture & design, systems analysis, GUI design & testing, Data modeling, design, and development of OLAP, Client/Server, Web & Mainframe applications and systems utilizing: Planning Analytics Workspace (PAW), IBM Watson Analytics, Cognos BI & TM1, Framework Manager, dynaSight/ArcPlan, ASP, DHTML, XML, MS Visual Basic, VBA, PERL, R, SPLUNK, MS SQL Server, ORACLE, etc. He has authored numerous books, including Implementing Splunk - Second Edition; Mastering Splunk; Hands-On Machine Learning with IBM Watson; IBM Watson Projects; Statistics for Data Science; Mastering Predictive Analytics with R - Second Edition and others. Project areas include those with Data Analytics, Planning Analytics, and FOPM projects, holding various roles from architect, developer, technical and project leader.

See other products by James D. Miller

Rui Miguel Forte

Rui Miguel Forte

Rui Miguel Forte is currently the chief data scientist at Workable. He was born and raised in Greece and studied in the UK. He is an experienced data scientist, having over 10 years of work experience in a diverse array of industries spanning mobile marketing, health informatics, education technology, and human resources technology. His projects have included predictive modeling of user behavior in mobile marketing promotions, speaker intent identification in an intelligent tutor, information extraction techniques for job applicant resumes and fraud detection for job scams. He currently teaches R, MongoDB, and other data science technologies to graduate students in the Business Analytics MSc program at the Athens University of Economics and Business. In addition, he has lectured in a number of seminars, specialization programs, and R schools for working data science professionals in Athens. His core programming knowledge is in R and Java, and he has extensive experience working with a variety of database technologies such as Oracle, PostgreSQL, MongoDB, and HBase. He holds a Master's degree in Electrical and Electronic Engineering from Imperial College London and is currently researching machine learning applications in information extraction and natural language processing.

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