let I = { I1, I2, I3, , I10 } be a set of items, where Ij
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Question:
let I = { I1, I2, I3, …, I10 } be a set of items, where Ij denotes an item ID. Consider the transaction database D, defined in the table below:
Transaction ID List of Items in the Transaction
T1 I1, I3, I4
T2 I1, I2
T3 I5, I6, I7,I9
T4 I1, I2, I6,I10
T5 I1, I6, I8,I9
(1) Determine the support and the confidence of the association rule A ⇒ B, where
A = { I1 }, B = { I2 }
(2) Is the rule A⇒ B given above strong if
(a) min_sup = 30%
(b) min_sup = 50%
(3) Suppose that the minimum support count threshold is set to 30%,
(a) is { I1, I3, I4 } a frequent item set?
(b) is { I6, I9 } a frequent item set?
Related Book For
Introduction to Real Analysis
ISBN: 978-0471433316
4th edition
Authors: Robert G. Bartle, Donald R. Sherbert
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