Book Image

Synthetic Data for Machine Learning

By : Abdulrahman Kerim
Book Image

Synthetic Data for Machine Learning

By: Abdulrahman Kerim

Overview of this book

The machine learning (ML) revolution has made our world unimaginable without its products and services. However, training ML models requires vast datasets, which entails a process plagued by high costs, errors, and privacy concerns associated with collecting and annotating real data. Synthetic data emerges as a promising solution to all these challenges. This book is designed to bridge theory and practice of using synthetic data, offering invaluable support for your ML journey. Synthetic Data for Machine Learning empowers you to tackle real data issues, enhance your ML models' performance, and gain a deep understanding of synthetic data generation. You’ll explore the strengths and weaknesses of various approaches, gaining practical knowledge with hands-on examples of modern methods, including Generative Adversarial Networks (GANs) and diffusion models. Additionally, you’ll uncover the secrets and best practices to harness the full potential of synthetic data. By the end of this book, you’ll have mastered synthetic data and positioned yourself as a market leader, ready for more advanced, cost-effective, and higher-quality data sources, setting you ahead of your peers in the next generation of ML.
Table of Contents (25 chapters)
1
Part 1:Real Data Issues, Limitations, and Challenges
5
Part 2:An Overview of Synthetic Data for Machine Learning
8
Part 3:Synthetic Data Generation Approaches
13
Part 4:Case Studies and Best Practices
18
Part 5:Current Challenges and Future Perspectives

Hands-on GANs in practice

Let’s examine how we can utilize a GAN to generate some synthetic images in practice. We will examine Closed-Form Factorization of Latent Semantics in GANs (https://arxiv.org/abs/2007.06600) to learn how we can simply generate synthetic images for our ML problem. The code for this example was adapted from the paper’s original GitHub (https://github.com/genforce/sefa).

We begin by importing the essential libraries as shown:

# import the required libraries
import cv2
import torch
import numpy as np
from utils import to_tensor
from utils import postprocess
from utils import load_generator
from models import parse_gan_type
from utils import factorize_weight
from matplotlib import pyplot as plt

Then, we select the parameters of the generation process such as the number of images to generate, and the noise seed. Please note that the seed parameter will help us to get diverse images in this example:

num_samples = 1 # num of image to generate...