r confusion matrix code example

Example 1: how to make confusion matrix in r

library(caret)
confusionMatrix(data = your_prediction, 
                        reference = data$y)

Example 2: confusion matrix

A confusion matrix is a table that is often used to describe the performance of a classification model (or “classifier”) on a set of test data for which the true values are known. It allows the visualization of the performance of an algorithm.