4) Apply a cost function

• Human time cost:

  • take dot product of time-cost characterization vector with frequency vector (weighted sum)
  • use learning-curve characterization as a “fudge factor” based on experience of administrators (?)
    • also, frequency of task and learning curve interact

• Availability cost:

  • dot product of availability-impact characterization vector with frequency vector

• Any arbitrary cost function possible

  • characterization vectors include all raw information
  • sites can define their own

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