juniorLogistic Regression
What is a Decision Boundary?
Updated May 17, 2026
Short answer
A decision boundary separates classes in feature space.
Deep explanation
In Logistic Regression, the boundary is usually linear unless features are transformed.
Real-world example
Loan approval systems separate risky and safe applicants.
Common mistakes
- Assuming all datasets are linearly separable.
Follow-up questions
- How can non-linear boundaries be created?
- What defines the boundary?