1. Identify conditional and join probabilities from the following example. Explain how the probabilities are determined. Example Count, Support, Confidence: Data set D TID Itemsets T100 |134 Сount(13)3D2 T200 235 |D = 4 T300 1235 Support(13)=0.5 T400 25 Support(3→2)=0.5 Confidence(3→2)=0.67

1. Identify conditional and join probabilities from the following example. Explain how the probabilities are determined. Example Count, Support, Confidence: Data set D TID Itemsets T100 |134 Сount(13)3D2 T200 235 |D = 4 T300 1235 Support(13)=0.5 T400 25 Support(3→2)=0.5 Confidence(3→2)=0.67

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

1. Identify conditional and join probabilities from the following example. Explain how the probabilities
are determined.
Example
Count, Support,
Confidence:
Data set D
Itemsets
T100 134
TID
Count(13)=2
T200 235
D = 4
T300 1235
Support(13)=0.5
T400 25
Support(3 →2)=0.5
Confidence(3→2)=0.67

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