Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Consider the frequent closed itemset lattice shown in Figure 9.7. Assume that the item space is I = {A, B, C, D, E}. Answer the following questions
(a) What is the frequency of CD?
(b) Find all frequent itemsets and their frequency in the subset interval [B, ABD].
(c) Is ADE frequent? If yes, show its support. If not, why?
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