underfitting
/ˈʌndərˌfɪtɪŋ/
When a model is too simple to capture the underlying pattern
underfitting in a sentence
“Underfitting resulted in poor performance on both training and test data.”
Origin of underfitting
Modern English compound; under (insufficient) + fit (to be suitable), meaning not fitting closely enough
Related Words
hyperparameter
A parameter set before training begins, not learned from data
epoch
One complete pass through the entire training dataset
batch size
The number of samples processed before updating the model
loss function
A measure of how wrong the model's predictions are
bias
Prejudice in favor of or against one thing, person, or group
algorithm
A process or set of rules to be followed in calculations