How do we test the reliability of a model?
The model can be tested by applying it to new data as time goes by. Another possibility is to build the model on the basis of a portion of the available data, then test its performance on the "fresh" data that were initially withheld from the model.
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Which of the following is NOT a common queuing situation?
A) grocery shoppers being served by checkout clerks B) commuters slowing or stopping at toll plazas to pay highway tolls C) machinery waiting to be repaired or maintained D) parcel delivery truck following its computer-generated route E) patients in a health clinic waiting to see one of several doctors
________ data structures include additional elements necessary for implementing the system
A) Physical B) Logical C) Informational D) Logistical