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( a ) A database has 9 transactions, shown below: TID Items Bought T 1 { A , B } T 2 { B ,
a A database has transactions, shown below:
TID Items Bought
TA B
TB D
TB C
TB A D
TA C
TB C
TA C
TB A C E
TB A C
Assuming a minimum level of support count min sup count and a minimum level of confidence min conf :
i Use the Apriori algorithm to find the frequent itemsets Then list all frequent itemsets that can be derived from the frequent itemsets of the algorithm not just the ones with the maximum widthlength Just showing the final answer is not acceptable; show all steps of the algorithm with appropriate justification. For each iteration k show the candidate Ck and acceptable frequent itemsets Lk
ii List all of the association rules that can be derived based on the frequent itemsets of the previous question. While showing the association rules, show also their support and confidence values. Finally, mention and explain which of these association rules are strong.
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