Discovery of Characteristic Patterns from Transactions with Their Classes

Table 5

An example of transactions and item classes (2).

(a) Transaction

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𝑡₁=(cl₁∣it₁)

𝑡₂=(cl₃∣it₃)

𝑡₃=(cl₂∣it₂)

𝑡₄=(cl₂∣it₁,it₂)

𝑡₅=(cl₂∣it₁,it₂)

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(b) Item class

Item	Class
it1	{cl1,cl2,cl3}
it2	{cl2}
it3	{cl3}