Skip to main content
HT
HerbDev Application Rescue
← Learning hub

Vocabulary

Understand the term. Connect the concept.

A practical dictionary of 512 AI, machine learning, mathematics, and programming terms from HerbDev’s AI Vocabulary app. Start with a definition, explore an example, then follow the concepts behind it.

Linked concepts open in a new tab. Audio reads the definition and example.

Mean Squared Error

Model Training · Level 2 of 5

Mean Squared Error

The average squared difference between predicted and target values.

Squaring gives large errors greater influence.

Example

Errors of one and three produce an average squared error of five.

Listen to the definition and example

Audio transcript

Mean Squared Error. The average squared difference between predicted and target values. Squaring gives large errors greater influence. For example: Errors of one and three produce an average squared error of five.

Explore this concept

Why it matters

This helps you read a training loop and diagnose what is changing during learning.

Quick recall question

Try answering before looking back at the definition.

Put the terminology into context: How AI works · Machine-native representations · All learning paths

Manage browser learning data

“Remove my test data” clears all AI 101 and ML 101 scores, reviews, project checklists and rating selections, plus saved vocabulary and recent history in this browser. Test entries cannot be separated from other learning progress. Cookie preferences, security protections, submitted feedback, contact emails and past analytics are kept.