juniorSVM
What is the role of C parameter in SVM?
Updated May 17, 2026
Short answer
C controls trade-off between margin size and classification error.
Deep explanation
High C reduces margin but minimizes misclassification; low C increases margin but allows errors.
Real-world example
Used in fraud detection tuning models for balance.
Common mistakes
- Thinking higher C always means better model.
Follow-up questions
- What happens if C is very small?
- Is C related to overfitting?