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What might a poorly chosen performance measure for a taxi agent reward?

  • A.Choosing a route that avoids congested areas of the city
  • B.Speed at the expense of safety and passenger comfort
  • C.Arriving at the correct destination as requested
  • D.Obeying the traffic regulations that apply on the route

Answer: B

A measure that weights journey time heavily and safety lightly produces exactly the driving one would expect, which is why the measure must combine safety, legality, comfort, cost and speed with proportionate weights. The other three describe behaviours a good measure would encourage. Constructing a measure over several competing objectives is harder than it looks and is where most of the design difficulty in this example actually lies.

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