underfitting.

The failure of a model to capture relevant structure in the data because its representation or fitting is insufficient.

Use it for

Words that belong together

• underfitting of a model
• evidence of underfitting

On the page

Underfitting of the model left a consistent curved pattern in the residuals.

Evidence of underfitting prompted the researchers to reconsider the assumed relationship.

Usage notes

Primary category: science / research / methodology. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: method specification, measurement critique, model interpretation, qualification. Disciplines: research methods, statistics, experimental design. Commonness: moderately common.