A B C D X1 a1 b1 c3 L X2 a2 b1 c1 L X3 a2 b2 c1 H X4 a2 b2 c2 H X5 a2 b1 c1 L X6 a2 b2 c1 H X7 a2 b1 c2 H X8 a1 b2 c2 L Using the table above, calculate the following, there measures (1) support, (2) confidence, (3) all confidence. a) A1 ==> L b) A2, B2 ==> H c) A2, C2 ==> H
A B C D X1 a1 b1 c3 L X2 a2 b1 c1 L X3 a2 b2 c1 H X4 a2 b2 c2 H X5 a2 b1 c1 L X6 a2 b2 c1 H X7 a2 b1 c2 H X8 a1 b2 c2 L Using the table above, calculate the following, there measures (1) support, (2) confidence, (3) all confidence. a) A1 ==> L b) A2, B2 ==> H c) A2, C2 ==> H
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
A | B | C | D | |
X1 | a1 | b1 | c3 | L |
X2 | a2 | b1 | c1 | L |
X3 | a2 | b2 | c1 | H |
X4 | a2 | b2 | c2 | H |
X5 | a2 | b1 | c1 | L |
X6 | a2 | b2 | c1 | H |
X7 | a2 | b1 | c2 | H |
X8 | a1 | b2 | c2 | L |
Using the table above, calculate the following, there measures (1) support, (2) confidence, (3) all confidence.
a) A1 ==> L
b) A2, B2 ==> H
c) A2, C2 ==> H
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