Database Reference
In-Depth Information
Table 2.11 ( continued )
Input-output field
Analysis ID field
Content field
Transaction ID
Products
102
Product 2
103
Product 1
103
Product 3
103
Product 4
104
Product 1
104
Product 4
105
Product 1
105
Product 4
106
Product 2
106
Product 3
107
Product 1
107
Product 3
107
Product 4
108
Product 3
108
Product 4
109
Product 1
109
Product 3
109
Product 4
By setting the transaction ID field as the analysis ID we require the
algorithm to analyze the purchase patterns at a transaction level. If the
customer ID had been selected as the analysis ID, the purchase transactions
would have been internally aggregated and analyzed at a customer level.
Two of the derived rules are listed in Table 2.12.
Usually all the extracted rules are described and evaluated with respect to
three main measures:
Table 2.12 Rules of an association model.
Rule ID Consequent
Antecedent
Support % Confidence % Lift
Rule 1
Product 4
Products 3 and 1
44.4
75.0
1.13
Rule 2
Product 4
Product 1
77.8
71.4
1.07
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