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What is the utility vector at a terminal node of a multiplayer game?

  • A.The difference between the best and worst player outcomes
  • B.The outcome for each player listed in order
  • C.The single value of the position for the player who won
  • D.The average of the outcomes across all the players

Answer: B

Each terminal position assigns a value to every participant, and those vectors are backed up with each player selecting the successor maximising their own component. A single value, an average or a range would all discard the information that makes the multiplayer case different. Generalising a scalar to a vector, and a maximum to a component-wise selection, is the minimal extension and it shows exactly what the two player case was assuming.

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