Expert Contributors Articles

Metin Kortak

Updated on March 26, 2025

An SSH “Connection Refused” error occurs when an attempt to connect to a remote server is denied, leading to significant security vulnerabilities. Here’s what can cause this error, troubleshooting tips, security best practices and more on how SSH works.

Kurtis Pykes

Updated on March 26, 2025

Cohen’s kappa is a statistical metric that measures the reliability of two raters who are evaluating the same thing, accounting for the possibility that they could agree by chance. Here’s how it works and how to calculate it.

Mór Kapronczay

Updated on March 26, 2025

A language model conducts a probability distribution over words or word sequences. Here’s more on what language models can do, their types, evolution and future outlook.

Philipp Adamidis

Updated on March 26, 2025

Adopting AI requires a collaborative approach. Here’s why your company needs to adopt a universal AI governance strategy.

Nuno Bispo

Updated on March 26, 2025

Crypto mining is the process of solving complex cryptographic problems using computers to verify blockchain transactions. Here’s how to use a Raspberry Pi to start mining crypto and generating rewards.

Deepak Saini

Updated on March 26, 2025

The best AI operates in the background of the user experience, making actions more convenient without adding extra steps. Here’s how to do it.

Matthew Henschke

Updated on March 26, 2025

The two-sum problem is a popular technical interview question that involves finding two indices in an array that add up to a target value. Here’s how to solve the two-sum problem using two common methods.

Dhanesh TK

Updated on March 26, 2025

An interaction model serves as the blueprint for how a product behaves based on user behavior, with the goal of ensuring a seamless user experience. Take a deep dive into why interaction models matter and how they work.

Alex Williams

Updated on March 25, 2025

SushiSwap and Uniswap are two popular decentralized exchanges for cryptocurrency. Our expert assesses the differences between the two platforms.

Giorgos Myrianthous

Updated on March 25, 2025

Python’s shutil module offers four different ways to copy a file — shutil.copy(), shutil.copyfile(), shutil.copy2() and shutil.copyfileobj(). Here’s how to use each method and which one to pick to copy a file in Python.