Expert Contributors Articles

Giorgos Myrianthous

Updated on June 23, 2025

The Math.random method in Java generates a pseudorandom number between 0.0 and 1.0. Our expert explains how it works.

Soner Yıldırım

Updated on June 23, 2025

Adding a new column to a Pandas DataFrame can be done using direct assignment, df.insert(), df.loc[], df.assign() or a Python dictionary. Here's how to use each method.

Zakaria Jaadi

Updated on June 23, 2025

Principal component analysis (PCA) is a statistical technique that simplifies complex data sets by reducing the number of variables while retaining key information. PCA identifies new uncorrelated variables that capture the highest variance in the data.

Anthony Corbo

Updated on June 23, 2025

Python data structures are formats for organizing and storing different kinds of data in Python. The four main types of built-in Python data structures are lists, tuples, sets and dictionaries.

Manuel Silverio

Updated on June 23, 2025

A database management system (DBMS) is a software system for creating, modifying and managing databases. A DBMS allows users to create, read, update and delete data stored in a database.

Anthony Corbo

Updated on June 23, 2025

Inferential statistics is a branch of statistics that uses sampled data to draw conclusions or make predictions about a larger population.

Chandresh Patel

Updated on June 20, 2025

While Agile and AI demand rapid development and changes, developers and processes often get left behind creating delays and confusion. Here are eight rules to establish success. 

Ashar Rizqi

Updated on June 20, 2025

The next phase of AI tools won’t just emphasize automation, they’ll embed into workflows and focus on changing behavior. Learn more. 

Chase Maity

Updated on June 18, 2025

C lacks native support for interfaces, but it can be introduced by using a type class pattern inspired by Rust and Haskell. Here’s how.

Chris Dowsett

Updated on June 18, 2025

Selection effect is a bias that occurs when a sample or method favors a specific subset of a population, leading to results that don’t accurately represent the whole. If unchecked, selection effect can lead to false positives and bad investments.