Book Image

Hyperparameter Tuning with Python

By : Louis Owen
Book Image

Hyperparameter Tuning with Python

By: Louis Owen

Overview of this book

Hyperparameters are an important element in building useful machine learning models. This book curates numerous hyperparameter tuning methods for Python, one of the most popular coding languages for machine learning. Alongside in-depth explanations of how each method works, you will use a decision map that can help you identify the best tuning method for your requirements. You’ll start with an introduction to hyperparameter tuning and understand why it's important. Next, you'll learn the best methods for hyperparameter tuning for a variety of use cases and specific algorithm types. This book will not only cover the usual grid or random search but also other powerful underdog methods. Individual chapters are also dedicated to the three main groups of hyperparameter tuning methods: exhaustive search, heuristic search, Bayesian optimization, and multi-fidelity optimization. Later, you will learn about top frameworks like Scikit, Hyperopt, Optuna, NNI, and DEAP to implement hyperparameter tuning. Finally, you will cover hyperparameters of popular algorithms and best practices that will help you efficiently tune your hyperparameter. By the end of this book, you will have the skills you need to take full control over your machine learning models and get the best models for the best results.
Table of Contents (19 chapters)
Section 1:The Methods
Section 2:The Implementation
Section 3:Putting Things into Practice

Understanding particle swarm optimization

PSO is also a population-based heuristic search method, similar to the GA method. PSO is inspired by the schools of fish and flocks of birds’ social interaction in nature. As a hyperparameter tuning method, PSO is suggested to be utilized if your search space contains many non-categorical hyperparameters, each trial doesn’t take much time, and you have enough computational resources – especially parallel computing resources.

PSO is one of the most popular methods within the bigger swarm intelligence (SI) group of methods. There are various methods in SI that are inspired by the social interaction of animals in nature, such as herds of land animals, colonies of ants, flocks of birds, schools of fish, and many more. The common characteristics of SI methods are population-based, individuals within the population are relatively similar to each other, and the ability of the population to move in a specific direction systemically...