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Closed Patterns and Max-Patterns

  • Exercise. DB = {< a1, …, a100>, < a1, …, a50>}
    • Min_sup = 1.
  • What is the set of closed itemset?
    • < a1, …, a100>: 1
    • < a1, …, a50>: 2
  • What is the set of max-pattern?
    • < a1, …, a100>: 1
  • What is the set of all patterns?
    • !!

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