Book Image

The Supervised Learning Workshop - Second Edition

By : Blaine Bateman, Ashish Ranjan Jha, Benjamin Johnston, Ishita Mathur
Book Image

The Supervised Learning Workshop - Second Edition

By: Blaine Bateman, Ashish Ranjan Jha, Benjamin Johnston, Ishita Mathur

Overview of this book

Would you like to understand how and why machine learning techniques and data analytics are spearheading enterprises globally? From analyzing bioinformatics to predicting climate change, machine learning plays an increasingly pivotal role in our society. Although the real-world applications may seem complex, this book simplifies supervised learning for beginners with a step-by-step interactive approach. Working with real-time datasets, you’ll learn how supervised learning, when used with Python, can produce efficient predictive models. Starting with the fundamentals of supervised learning, you’ll quickly move to understand how to automate manual tasks and the process of assessing date using Jupyter and Python libraries like pandas. Next, you’ll use data exploration and visualization techniques to develop powerful supervised learning models, before understanding how to distinguish variables and represent their relationships using scatter plots, heatmaps, and box plots. After using regression and classification models on real-time datasets to predict future outcomes, you’ll grasp advanced ensemble techniques such as boosting and random forests. Finally, you’ll learn the importance of model evaluation in supervised learning and study metrics to evaluate regression and classification tasks. By the end of this book, you’ll have the skills you need to work on your real-life supervised learning Python projects.
Table of Contents (9 chapters)

Importing the Modules and Preparing Our Dataset

In the previous exercises and activities, we used terms such as Mean Absolute Error (MAE) and accuracy. In machine learning terms, these are called evaluation metrics and, in the next sections, we will discuss some useful evaluation metrics, what they are, and how and when to use them.


Although this section is not positioned as an exercise, we encourage you to follow through this section carefully by executing the presented code. We will be using the code presented here in the upcoming exercises.

We will now load the data and models that we trained as part of Chapter 6, Ensemble Modeling. We will use the stacked linear regression model from Activity 6.01, Stacking with Standalone and Ensemble Algorithms, and the random forest classification model to predict the survival of passengers from Exercise 6.06, Building the Ensemble Model Using Random Forest.

First, we need to import the relevant libraries:

import pandas as...