AI Blog

AI Blog

by Michele Laurelli

MSE (Mean Squared Error)

Metric
Definition

Loss function measuring average squared difference between predicted and actual values.

MSE = (1/n) * Σ(y_true - y_pred)². Heavily penalizes large errors. Common for regression. Lower is better.

Examples

1

Regression loss function

2

Neural network training

3

Error measurement

Michele Laurelli - AI Research & Engineering