Simple Bounds on Lift Curve

• Approximately

  CumPHits(P) ~ sqrt(P)
  
  P 0.4 < CumPHits(P) < P 0.6

• Lift(P) = CumPHits(P)/P

  Lift(P) ~ 1/sqrt(P)
  
  (1/P) 0.4 < Lift(P) < (1/P) 0.6

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