Book Image

Hands-On Automated Machine Learning

By : Sibanjan Das, Umit Mert Cakmak
Book Image

Hands-On Automated Machine Learning

By: Sibanjan Das, Umit Mert Cakmak

Overview of this book

AutoML is designed to automate parts of Machine Learning. Readily available AutoML tools are making data science practitioners’ work easy and are received well in the advanced analytics community. Automated Machine Learning covers the necessary foundation needed to create automated machine learning modules and helps you get up to speed with them in the most practical way possible. In this book, you’ll learn how to automate different tasks in the machine learning pipeline such as data preprocessing, feature selection, model training, model optimization, and much more. In addition to this, it demonstrates how you can use the available automation libraries, such as auto-sklearn and MLBox, and create and extend your own custom AutoML components for Machine Learning. By the end of this book, you will have a clearer understanding of the different aspects of automated Machine Learning, and you’ll be able to incorporate automation tasks using practical datasets. You can leverage your learning from this book to implement Machine Learning in your projects and get a step closer to winning various machine learning competitions.

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Table of Contents (10 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Introduction to AutoML
Introduction to AutoML
Scope of machine learning
What is AutoML?
Why use AutoML and how does it help?
When do you automate ML?
What will you learn?
Overview of AutoML libraries
Summary
2
Introduction to Machine Learning Using Python
Introduction to Machine Learning Using Python
Technical requirements
Machine learning
Linear regression
Important evaluation metrics – regression algorithms
Logistic regression
Important evaluation metrics – classification algorithms
Decision trees
Support Vector Machines
k-Nearest Neighbors
Ensemble methods
Comparing the results of classifiers
Cross-validation
Clustering
Summary
3
Data Preprocessing
Data Preprocessing
Technical requirements
Data transformation
Feature selection
Feature generation
Summary
4
Automated Algorithm Selection
Automated Algorithm Selection
Technical requirements
Computational complexity
Differences in training and scoring time
Linearity versus non-linearity
Necessary feature transformations
Supervised ML
Unsupervised AutoML
Summary
5
Hyperparameter Optimization
Hyperparameter Optimization
Technical requirements
Hyperparameters
Warm start
Bayesian-based hyperparameter tuning
An example system
Summary
6
Creating AutoML Pipelines
Creating AutoML Pipelines
Technical requirements
An introduction to machine learning pipelines
A simple pipeline
FunctionTransformer
A complex pipeline
Summary
7
Dive into Deep Learning
Dive into Deep Learning
Technical requirements
Overview of neural networks
A feed-forward neural network using Keras
Autoencoders
Convolutional Neural Networks
Summary
8
Critical Aspects of ML and Data Science Projects
Critical Aspects of ML and Data Science Projects
Machine learning as a search
Trade-offs in machine learning
Engagement model for a typical data science project
The phases of an engagement model
Summary
9
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Cross-validation

Cross-validation is a way to evaluate the accuracy of a model on a dataset that was not used for training, that is, a sample of data that is unknown to trained models. This ensures generalization of a model on independent datasets when deployed in a production environment. One of the methods is dividing the dataset into two sets—train and test sets. We demonstrated this method in our previous examples.

Another popular and more robust method is a k-fold cross-validation approach, where a dataset is partitioned into k subsamples of equal sizes. Where k is a non-zero positive integer. During the training phase, k-1 samples are used to train the model and the remaining one sample is used to test the model. This process is repeated for k times with one of the k samples used exactly once to test the model. The evaluation results are then averaged or combined...

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