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Michael Galarnyk Michael Galarnyk
Updated on August 04, 2025

Train Test Split: What It Means and How to Use It

Train test split is a model validation procedure that splits a data set into a training set and a testing set, which are used to determine how your model performs on new data. Here’s how to apply it.

Expert Contributors
Data Science
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Soner Yıldırım Soner Yıldırım
Updated on August 04, 2025

Dot Product of a Matrix: Explained

The dot product of a matrix refers to the matrix multiplication process, where the dot product is computed between rows of the first matrix and columns of the second matrix to produce a new matrix.

Expert Contributors
Data Science
Machine Learning
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Sohail Hosseini Sohail Hosseini
Updated on August 04, 2025

How to Use Loc and iLoc in Pandas: A Guide

The .loc[] and .iloc[] properties in Pandas are used to access specific rows and columns in a pandas DataFrame (or slice a data set). The .loc[] property is used for label indexing, while the .iloc[] property is used for integer indexing.

Expert Contributors
Software Engineering Perspectives
Data Science
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David Klempfner David Klempfner
Updated on August 04, 2025

Two’s Complement: A Guide

Two’s complement is a binary encoding method used to represent signed integers in computing systems.

Expert Contributors
Data Science
Software Engineering Perspectives
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Alex Vakulov Alex Vakulov
Updated on August 04, 2025

Can Metadata Standards Like C2PA Fight Deepfakes?

The C2PA standard enables embedding metadata into images and other media content to verify the presence of AI.

Expert Contributors
Security
Machine Learning
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Sandro Shubladze Sandro Shubladze
Updated on August 04, 2025

Outsmart the Competition With Scraped Data and Better AI

High-quality, fresh data is critical for AI performance. Fortunately, public data scraping offers a source for such data.

Expert Contributors
Machine Learning
Data Mining
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Jayanth Somineni Jayanth Somineni
Updated on August 04, 2025

Different Ways to Display Images in React.js Apps

Learn different ways of including images in React.js applications. Display great imagery, no matter your code’s style.

Expert Contributors
Javascript Design
React
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Dr. Derek Austin Dr. Derek Austin
Updated on August 04, 2025

How to Check for Null in JavaScript

Null represents an intentional absence of a value, indicating a variable has been declared but has yet to be assigned a value. These are some of the most common methods for checking for null and values loosely equal to null in JavaScript.

Expert Contributors
Javascript Algorithms
Javascript
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Giorgos Myrianthous Giorgos Myrianthous
Updated on August 01, 2025

Fact Table vs. Dimension Table: What’s the Difference?

A fact table contains quantitative data from a business process. Dimension tables store qualitative data that provide context for the facts. Together, they are the core components of the star schema used in data warehouse modeling.

Expert Contributors
Data Science
Data Modeling
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Gianluca Malato Gianluca Malato
Updated on August 01, 2025

An Introduction to the Shapiro-Wilk Test for Normality

The Shapiro-Wilk test is a hypothesis test applied to a sample with the null hypothesis that the sample was generated from a normal distribution.

Expert Contributors
Python for Data Science
Data Visualization
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