Discovery of Characteristic Patterns from Transactions with Their Classes

Table 7

An example of transactions and item classes (3).

(a) Transaction

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𝑡₁=(cl₁∣it₁,it₂,it₃,it₅)

𝑡₂=(cl₁∣it₁,it₃,it₄)

𝑡₃=(cl₁∣it₁,it₂,it₃,it₄,it₈)

𝑡₄=(cl₂∣it₁,it₂,it₄,it₇)

𝑡₅=(cl₂∣it₄,it₅,it₆)

𝑡₆=(cl₂∣it₁,it₅,it₆)

𝑡₇=(cl₂∣it₁,it₉)

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(b) Item class

Item	Class
it1	{cl1,cl2}
it2	{cl1,cl2}
it3	{cl1}
it4	{cl1,cl2}
it5	{cl1,cl2}
it6	{cl2}
it7	{cl2}
it8	{cl1}
it9	{cl1,cl2}