5002 Association Memo

Basic concept

The support of itemset of different size like:

• itemset-size1 :{B}
• itemset-size2: {A, B} supp({B}) = count of apparence of B. …

Association rule: {A, B} -> C support of associaiton rule: supp({A, B}->C) = supp({A, B, C}) confidence of association rule: conf({A, B}->C) = supp({A, B, C}) / supp({A, B})