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Interestingness Measure: Correlations (Lift)

  • play basketball ⇒ eat cereal [40%, 66.7%] is misleading
    • The overall % of students eating cereal is 75% > 66.7%.
  • play basketball ⇒ not eat cereal [20%, 33.3%] is more accurate, although with lower support and confidence
  • Measure of dependent/correlated events: lift


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