Practical Synthetic Data Generation

Balancing Privacy and the Broad Availability of Data

By: Khaled El Emam, Lucy Mosquera, Richard Hoptroff

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eText | 19 May 2020 | Edition Number 1

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Building and testing machine learning models requires access to large and diverse data. But where can you find usable datasets without running into privacy issues? This practical book introduces techniques for generating synthetic data—fake data generated from real data—so you can perform secondary analysis to do research, understand customer behaviors, develop new products, or generate new revenue.

Data scientists will learn how synthetic data generation provides a way to make such data broadly available for secondary purposes while addressing many privacy concerns. Analysts will learn the principles and steps for generating synthetic data from real datasets. And business leaders will see how synthetic data can help accelerate time to a product or solution.

This book describes:

Steps for generating synthetic data using multivariate normal distributions
Methods for distribution fitting covering different goodness-of-fit metrics
How to replicate the simple structure of original data
An approach for modeling data structure to consider complex relationships
Multiple approaches and metrics you can use to assess data utility
How analysis performed on real data can be replicated with synthetic data
Privacy implications of synthetic data and methods to assess identity disclosure