Python Machine Learning Cookbook

Training an image classifier using Extremely Random Forests

We will use Extremely Random Forests (ERFs) to train our image classifier. An object recognition system uses an image classifier to classify the images into known categories. ERFs are very popular in the field of machine learning because of their speed and accuracy. We basically construct a bunch of decision trees that are based on our image signatures, and then train the forest to make the right decision. You can learn more about random forests at https://www.stat.berkeley.edu/~breiman/RandomForests/cc_home.htm. You can learn about ERFs at http://www.montefiore.ulg.ac.be/~ernst/uploads/news/id63/extremely-randomized-trees.pdf.

How to do it…

1. Create a new Python file, and import the following ...