Introduction to decision tree classifiers from scikit-learn

Applying a decision tree classifier to the iris dataset

Photo by Nate Grant on Unsplash

There are plenty of articles out there that explain what a decision tree is and what it does:

Decision Tree Classification

The Basics: Decision Tree Classifiers

Decision Tree Classifiers Explained

So here I am going to focus on how a decision tree may be implemented using the scikit-learn library in python on the iris dataset, along with some of the functionality that is useful in analysing the performance of the algorithm.

What is a classifier?