Classification in R – naive bayes in R

Hits: 11

Classification in R – naive bayes in R

Classification is a type of supervised machine learning that is used to predict the class or category of a new observation based on the values of its predictors. One popular method of classification is using naive bayes algorithm.

Naive Bayes is a probabilistic algorithm that is based on the Bayes theorem. It works by using the probability of each class and the probability of each predictor given the class to predict the probability of a new observation belonging to each class. The algorithm is called “naive” because it makes the assumption that the predictors are independent of one another given the class, which is often not the case in real-world data. Despite this assumption, the algorithm is still able to achieve good performance in many classification tasks.

In R, there are several packages available for building naive bayes models, such as the ‘e1071’ and ‘klaR’ packages. These packages provide functions for creating and training naive bayes models, as well as functions for evaluating the performance of the model.

The process of building a naive bayes model in R typically involves the following steps:

Prepare the data: The first step is to prepare the data for the model. This may involve cleaning the data, splitting it into training and testing sets, and creating dummy variables for categorical predictors.

Define the model: The next step is to define the structure of the model, including the dependent and independent variables and the type of naive bayes algorithm (e.g. Gaussian, Bernoulli, Multinomial)

Train the model: The model is trained using the prepared data by calculating the probability of each class and the probability of each predictor given the class.

Evaluate the model: The model’s performance is evaluated using various metrics such as accuracy, precision, recall, and F1 score.

Make predictions: Once the model is trained and evaluated, it can be used to make predictions on new data by inputting the values of the independent variables and using the Bayes theorem to calculate the probability of the new observation belonging to each class.

Naive Bayes algorithm is simple, fast and efficient, it’s also good at dealing with high-dimensional data and can handle categorical variables as well. However, it’s based on the assumption of independence between predictors which may not be true in some cases. Additionally, the performance of the algorithm can be negatively affected by irrelevant or highly correlated features. Despite these limitations, Naive Bayes can still achieve good performance on a wide range of classification tasks.


In this Applied Machine Learning & Data Science Recipe (Jupyter Notebook), the reader will find the practical use of applied machine learning and data science in R programming: Classification in R – naive bayes in R.

Classification in R – naive bayes in R

Personal Career & Learning Guide for Data Analyst, Data Engineer and Data Scientist

Applied Machine Learning & Data Science Projects and Coding Recipes for Beginners

A list of FREE programming examples together with eTutorials & eBooks @ SETScholars

95% Discount on “Projects & Recipes, tutorials, ebooks”

Projects and Coding Recipes, eTutorials and eBooks: The best All-in-One resources for Data Analyst, Data Scientist, Machine Learning Engineer and Software Developer

Topics included: Classification, Clustering, Regression, Forecasting, Algorithms, Data Structures, Data Analytics & Data Science, Deep Learning, Machine Learning, Programming Languages and Software Tools & Packages.
(Discount is valid for limited time only)

Disclaimer: The information and code presented within this recipe/tutorial is only for educational and coaching purposes for beginners and developers. Anyone can practice and apply the recipe/tutorial presented here, but the reader is taking full responsibility for his/her actions. The author (content curator) of this recipe (code / program) has made every effort to ensure the accuracy of the information was correct at time of publication. The author (content curator) does not assume and hereby disclaims any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from accident, negligence, or any other cause. The information presented here could also be found in public knowledge domains.

Learn by Coding: v-Tutorials on Applied Machine Learning and Data Science for Beginners

There are 2000+ End-to-End Python & R Notebooks are available to build Professional Portfolio as a Data Scientist and/or Machine Learning Specialist. All Notebooks are only $19.95. We would like to request you to have a look at the website for FREE the end-to-end notebooks, and then decide whether you would like to purchase or not.

Please do not waste your valuable time by watching videos, rather use end-to-end (Python and R) recipes from Professional Data Scientists to practice coding, and land the most demandable jobs in the fields of Predictive analytics & AI (Machine Learning and Data Science).

The objective is to guide the developers & analysts to “Learn how to Code” for Applied AI using end-to-end coding solutions, and unlock the world of opportunities!

How to do time series DATA Wrangling in a Pandas DataFrame in Python

Applied Data Science Coding with Python: Naive Bayes Algorithm