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Applied Supervised Learning with R

You're reading from   Applied Supervised Learning with R Use machine learning libraries of R to build models that solve business problems and predict future trends

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Product type Paperback
Published in May 2019
Publisher
ISBN-13 9781838556334
Length 502 pages
Edition 1st Edition
Languages
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Authors (2):
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Jojo Moolayil Jojo Moolayil
Author Profile Icon Jojo Moolayil
Jojo Moolayil
Karthik Ramasubramanian Karthik Ramasubramanian
Author Profile Icon Karthik Ramasubramanian
Karthik Ramasubramanian
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Table of Contents (12) Chapters Close

Applied Supervised Learning with R
Preface
1. R for Advanced Analytics FREE CHAPTER 2. Exploratory Analysis of Data 3. Introduction to Supervised Learning 4. Regression 5. Classification 6. Feature Selection and Dimensionality Reduction 7. Model Improvements 8. Model Deployment 9. Capstone Project - Based on Research Papers Appendix

Exploring Categorical Features


Categorical features differ from numeric or continuous features in nature, and therefore the traditional methods used earlier aren't applicable here. We can analyze the number of different classes within a categorical variable and the frequency associated with each. This can be achieved using either simple analytical techniques or visual techniques. Let's explore a list of categorical features using a combination of both.

Exercise 24: Exploring Categorical Features

In this exercise, we will start with a simple variable, that is, marital, which indicates the marital status of the client. Let's use the dplyr library to perform grouped data aggregation.

Perform the following steps to complete the exercise:

  1. First, import the dplyr library in the system using the following command:

    library(dplyr)
  2. Next, we will create an object named marital_distribution and store the value based on the following condition:

    marital_distribution <- df %>% group_by(marital) %>% ...
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