underfitting
Too simple model
Underfitting occurs when a statistical or machine learning model is too simple to capture patterns in the data.
An underfitting model performs poorly even on the data it was trained on, failing to learn meaningful relationships: The linear model was underfitting—it couldn't capture the curve in the data.
The opposite problem is overfitting, where a model learns the training data too well and fails on new examples.
Unfair inclination or prejudice
- varianceSpread around the mean
- trainingDeveloping abilities through practice
- validationConfirming truth or accuracy
- overgeneralizationUnwarranted broad application
capacity · regularization · hyperparameter · cross-validation · holdout · residuals · convergence · benchmark
Stripping complexity unfairly
- undertrainedInsufficiently prepared through practice
- nonlinearityDisproportionate cause and effect
- representationDepiction or likeness
- expressivenessAbility to convey emotion
flexibility · constraints · assumptions · rigid · restrictive
Made misleadingly basic
- naiveInnocently unsuspecting
- primitiveIn earliest form
- rudimentaryIn simplest possible form
- basicFundamental in nature
elementary · shallow · superficial · underdeveloped · unrefined · unsophisticated · crude · generic
Return to former state
- classificationSystematic grouping by traits
- ensembleUnified group or outfit
- boostingIncreasing force or level
- baggingEnclosing in pouches
Lack of precision
- underperformanceFailing to meet expectations
- imprecisionLack of exactness
- unreliableNot consistently performing
- unrepresentativeNot reflecting the whole
bias
Unfair inclination or prejudice
- varianceSpread around the mean
- trainingDeveloping abilities through practice
- validationConfirming truth or accuracy
overgeneralization · capacity · regularization · hyperparameter · cross-validation · holdout · residuals · convergence · benchmark · diagnostic
oversimplification
Stripping complexity unfairly
- undertrainedInsufficiently prepared through practice
- nonlinearityDisproportionate cause and effect
- representationDepiction or likeness
expressiveness · flexibility · constraints · assumptions · rigid · restrictive
oversimplified
Made misleadingly basic
- naiveInnocently unsuspecting
- primitiveIn earliest form
- rudimentaryIn simplest possible form
basic · elementary · shallow · superficial · underdeveloped · unrefined · unsophisticated · crude · generic · incomplete
regression
Return to former state
- classificationSystematic grouping by traits
- ensembleUnified group or outfit
- boostingIncreasing force or level
inaccuracy
Lack of precision
- underperformanceFailing to meet expectations
- imprecisionLack of exactness
- unreliableNot consistently performing