In the figure above, which number points to the active tab?

Draw an itemset lattice representing the data set given in Table 6.3. Label each node in the lattice with the following letter(s):

The Apriori algorithm uses a generate-and-count strategy for deriving fre-
quent itemsets. Candidate itemsets of size k + 1 are created by joining a pair

of frequent itemsets of size k (this is known as the candidate generation step).
A candidate is discarded if any one of its subsets is found to be infrequent
during the candidate pruning step. Suppose the Apriori algorithm is applied
to the data set shown in Table 6.3 with minsup = 30%, i.e., any itemset
occurring in less than 3 transactions is considered to be infrequent.

N: If the itemset is not considered to be a candidate itemset by
the Apriori algorithm. There are two reasons for an itemset not to
be considered as a candidate itemset: (1) it is not generated at all
during the candidate generation step, or (2) it is generated during
the candidate generation step but is subsequently removed during
the candidate pruning step because one of its subsets is found to
be infrequent.
• F: If the candidate itemset is found to be frequent by the Apriori
algorithm.
• I: If the candidate itemset is found to be infrequent after support
counting.

List three of the five advantages of a logical data flow diagram.

What will be an ideal response?