Data Science Articles

Gordon Gottsegen

Updated on September 29, 2025

These data science companies are helping businesses glean insights from massive amounts of data faster than ever before.

Harshil Patel

Updated on September 29, 2025

Feature engineering is the process of selecting, transforming and creating features from raw data to improve the performance of supervised learning models.

Merlin Schäfer

Updated on September 29, 2025

With the array, PostgreSQL allows columns of a table to be defined as variable-length multidimensional arrays. 

Lynn Kwong

Updated on September 29, 2025

In Python, we can use the JSON Schema library to validate a JSON document against a schema.

Matthew Urwin

Updated on September 24, 2025

OpenAI appears to be reviving its robotics work with a new team focused on humanoid robots — a move that could bring it close to its ultimate goal of unlocking artificial general intelligence.

Peter Grant

Updated on September 23, 2025

In Python, a datetime object (part of the datetime module) represents a specific date and time, combining both components into a single object for easy manipulation and formatting.

Matthew Urwin

Updated on September 23, 2025

The Trump administration is leaning on major tech companies to expand AI education in the United States. Will it work?

Suraj Gurav

Updated on September 22, 2025

A confusion matrix is a table used to evaluate the performance of a classification model by comparing the predicted labels with the actual labels, showing true positives, true negatives, false positives and false negatives.

Satyam Tripathi

Updated on September 22, 2025

KeyError in Python is an exception that occurs when you try to access a key that does not exist in a dictionary.

Sohail Hosseini

Updated on September 22, 2025

A t-test is a statistical test used to determine if there is a significant difference between a sample mean and a hypothesized population mean, or between the means of two independent groups. Here's how to perform a t-test in Python.