Book Image

Machine Learning Automation with TPOT

By : Dario Radečić
Book Image

Machine Learning Automation with TPOT

By: Dario Radečić

Overview of this book

The automation of machine learning tasks allows developers more time to focus on the usability and reactivity of the software powered by machine learning models. TPOT is a Python automated machine learning tool used for optimizing machine learning pipelines using genetic programming. Automating machine learning with TPOT enables individuals and companies to develop production-ready machine learning models cheaper and faster than with traditional methods. With this practical guide to AutoML, developers working with Python on machine learning tasks will be able to put their knowledge to work and become productive quickly. You'll adopt a hands-on approach to learning the implementation of AutoML and associated methodologies. Complete with step-by-step explanations of essential concepts, practical examples, and self-assessment questions, this book will show you how to build automated classification and regression models and compare their performance to custom-built models. As you advance, you'll also develop state-of-the-art models using only a couple of lines of code and see how those models outperform all of your previous models on the same datasets. By the end of this book, you'll have gained the confidence to implement AutoML techniques in your organization on a production level.
Table of Contents (14 chapters)
1
Section 1: Introducing Machine Learning and the Idea of Automation
3
Section 2: TPOT – Practical Classification and Regression
8
Section 3: Advanced Examples and Neural Networks in TPOT

Exploring options for training neural network classifiers

You have a lot of options when training neural network models with TPOT. The whole neural network story is still new and experimental with TPOT, requiring a bit more manual work than regular scikit-learn estimators.

By default, TPOT won't use the neural network models unless you explicitly specify that it has to. This specification is done by selecting an adequate configuration dictionary that includes one or more neural network estimators (you can also write these manually).

The more convenient option is to import configuration dictionaries from the tpot/config/classifier_nn.py file. This file contains two PyTorch classifier configurations, as visible in the following diagram:

Figure 7.8 – TPOT PyTorch classifier configurations

From the preceding diagram, you can see that TPOT can currently handle two different types of classifiers based on deep learning libraries:

  • Logistic...