Given the lattice structure shown in Figure 6 4 and the transactions given in Table 6 3, label each node with the following letter(s) cent M if the node is a maximal frequent itemset, cent C if it is a closed frequent itemset, cent N if it is frequent but neither maximal nor closed, and cent I if it is infrequent Assume that the support threshold is equal to 30 nul ab ad bc bd be de abc abe acd ade bde ode abod abde acde bode abcde Figure 6 4 An itemset lattice

Question: Given the lattice structure shown in Figure 6.4 and the transactions given in Table 6.3, label each node with the following letter(s): ¢ M if

Given the lattice structure shown in Figure 6.4 and the transactions given in Table 6.3, label each node with the following letter(s):

€¢ M if the node is a maximal frequent itemset,
€¢ C if it is a closed frequent itemset,
€¢ N if it is frequent but neither maximal nor closed, and
€¢ I if it is infrequent.
Assume that the support threshold is equal to 30%.

nul ab ad bc bd be de abc abe acd ade bde ode abod abde acde bode abcde Figure 6.4. An itemset lattice

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