AI engineering glossary · Classical ML algorithms
What is QDA (quadratic discriminant analysis)?
Quadratic discriminant analysis (also called QDA): A generative classifier like linear discriminant analysis but allowing every class its own spread, which produces curved quadratic boundaries. It is more flexible but needs more data to estimate each class's covariance.
Quadratic discriminant analysis: an example
With classes of different shapes, one tight and one wide, it draws an elliptical boundary between them.
Related terms
More Classical ML algorithms terms
Where you learn it
Quadratic discriminant analysis is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.