juniorCurse of Dimensionality
How does dimensionality affect classification accuracy?
Updated May 15, 2026
Short answer
Accuracy may drop due to overfitting and noise.
Deep explanation
High-dimensional feature spaces increase model complexity, leading to poor generalization unless regularized.
Real-world example
Spam detection with many weak signals.
Common mistakes
- Ignoring feature selection.
Follow-up questions
- What improves accuracy?
- Does more data help?