Chapter 16 Flashcards
1
Q
What is class imbvalance?
A
When there is an uneven amount of cases in different classes.
2
Q
What is resampling?
A
Dataset is changed:
1) under sampling: randomly remove some of the over-represented class
2) over sampling: add copies of under-sampled class.
3
Q
What is penalization?
A
Where the relative importance of each class is changed.
