Expert Contributors Articles

Sue Liu

Updated on September 02, 2025

The Dirichlet distribution is a multivariate probability distribution that models vectors of non-negative values summing to one, commonly used as a prior for categorical and multinomial variables in Bayesian statistics.

Dr. Derek Austin

Updated on September 02, 2025

Big O, Big Theta and Big Omega notations express an algorithm’s time and space complexity. Discover what each one is and what the differences between them are.

Anthony Corbo

Updated on September 02, 2025

Digital forensics is the process of collecting, preserving and analyzing data from digital devices to uncover evidence for legal, investigative or security purposes.

Artturi Jalli

Updated on September 02, 2025

Infrastructure as Code (IaC) is the practice of automating the provisioning and management of IT infrastructure using code instead of manual configuration.

Rouzbeh Yassini-Fard

Updated on September 02, 2025

In this book excerpt, the image of a flying dove proves that broadband connectivity is possible.

Anthony Corbo

Updated on August 29, 2025

Information security is the practice of protecting data and information systems from unauthorized access, alteration or disruption to ensure information confidentiality, integrity and availability.

Anthony Corbo

Updated on August 29, 2025

Network security is the practice of protecting computer networks and their data from unauthorized access, attacks and damage through a combination of technologies, processes and policies.

Julia Zolotarev

Updated on August 29, 2025

If you’ve always wondered how a stack actually works but been too afraid to ask, you’ve come to the right place. Let’s dig in.

Alexandru Nastase

Updated on August 29, 2025

The volatile keyword in Java signals that a variable is being stored in the main memory, ensuring all threads see the same value. Here’s how it differs from other types of keywords in Java, when to use it, how to use it and its limitations.

Niklas Donges

Updated on August 28, 2025

Nominal, ordinal, discrete and continuous data are the main types of data used in statistics. Here's a comprehensive guide to each type.