Given a transactional database Y: Using the threshold values for support s = 30% and confidence c = 60%, (a) find all large itemsets in database Y; (b) if itemsets are organized in a hierarchy so that...

Given a transactional database Y:

Using the threshold values for support s = 30% and confidence c = 60%,

(a) find all large itemsets in database Y;

(b) if itemsets are organized in a hierarchy so that A = {A1, A2, A3}, B = {B1, B2}, C = {C1, C2, C3}, D = {D1, D2}, and E = {E1, E2}, fi nd large itemsets that are defi ned on the conceptual level including a hierarchy of items; (c) fi nd strong association rules for large itemsets in (b).