P25Machine LearningIntermediateDiagnose12 min
Diagnose an Underfitting Model
Recognize when a model is too simple rather than overfit.
#underfitting#bias#model-complexity
Scenario
A demand model has training R-squared of 0.28 and validation R-squared of 0.25 despite reliable, varied data.
Problem statement
Interpret the pattern and propose useful next experiments.
Your Task
- Compare train and validation scores.
- Contrast this pattern with overfitting.
- Suggest improvements to features or model flexibility.
Related Concepts
Bias-varianceFeature qualityModel selection
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Mark it complete when you have reasoned through the solution in your own words.