Breadth First Search: 2-Itemsets

{}

{2}

{1}

{4}

{3}

{1,2}

{2,3}

{1,3}

{1,4}

{2,4}

{1,2,3,4}

{1,2,3}

{3,4}

{1,2,4}

{1,3,4}

{2,3,4}

Infrequent

Frequent

Currently examined

Don’t know

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