Chapter 21 Flashcards
1
Q
What is association rulelearning?
A
Discovery of interesting relations between dataset features
2
Q
What does support show?
A
X and Y is seen often together - the empirical probability of an itemset.
3
Q
What does confidence show?
A
When people get X they often get Y.
4
Q
What is the purpose of the Apriori algorithm?
A
It is a way to discover association rules with high support.
5
Q
What is downwards closure property?
A
If X is frequent so is any of its subsets.
