Book Image

Data Science Algorithms in a Week

By : Dávid Natingga
Book Image

Data Science Algorithms in a Week

By: Dávid Natingga

Overview of this book

<p>Machine learning applications are highly automated and self-modifying, and they continue to improve over time with minimal human intervention as they learn with more data. To address the complex nature of various real-world data problems, specialized machine learning algorithms have been developed that solve these problems perfectly. Data science helps you gain new knowledge from existing data through algorithmic and statistical analysis.</p> <p>This book will address the problems related to accurate and efficient data classification and prediction. Over the course of 7 days, you will be introduced to seven algorithms, along with exercises that will help you learn different aspects of machine learning. You will see how to pre-cluster your data to optimize and classify it for large datasets. You will then find out how to predict data based on the existing trends in your datasets.</p> <p>This book covers algorithms such as: k-Nearest Neighbors, Naive Bayes, Decision Trees, Random Forest, k-Means, Regression, and Time-series. On completion of the book, you will understand which machine learning algorithm to pick for clustering, classification, or regression and which is best suited for your problem.</p>
Table of Contents (12 chapters)
11
Glossary of Algorithms and Methods in Data Science

Data types

Some of the data types available in R are:

  • Numeric data types: integer, numeric
  • Text data types: string
  • Composite data types: vector, list, data frame

Integer

The integer data type can hold only integer values:

Input:

source_code/appendix_b_r/example02_int.r
#Integer constants are suffixed with L.
rectangle_side_a = 10L
rectangle_side_b = 5L
rectangle_area = rectangle_side_a * rectangle_side_b
rectangle_perimeter = 2*(rectangle_side_a + rectangle_side_b)
#The command cat like print can also be used to print the output
#to the command line. cat("Let there be a rectangle with the sides of lengths:", rectangle_side_a, "and", rectangle_side_b, "cm.\n") cat("Then the area of the rectangle...