Machine learning visualisations

Visualisations About

All visualisations/Generalisation

When does a flexible model stop generalising?

Difficulty: Approachable
Estimated time: 4 min

Loading visualisation

Step 1 of 3Start with a rigid model

Look at the low-degree curve against the training points.

A near-straight line cannot bend enough to follow the pattern. It misses on both the training and the validation data.

Focus this chart and use the left and right arrow keys to change the polynomial degree.

Degree 1. Training error 0.210, validation error 0.236. Underfitting: the model is too simple to capture the pattern.

Degree1 · underfit