Artificial Intelligence: A Modern Approach
3rd Edition
ISBN: 9780136042594
Author: Stuart Russell, Peter Norvig
Publisher: Prentice Hall
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Expert Solution & Answer
Chapter 5, Problem 1E
Explanation of Solution
- The translation uses the model of the opponent to fill in the opponent’s actions leaving the actions to be determined by the search algorithm.
- The search problem is given by
Initial state: P(S0) where S0 is the initial game state. P can be applied as the opponent may play first.
Actions: defined as in the game by ACTIONSs.
Successor function: RESULT′(s, a) = P(RESULT(s, a))
Goal test: goals are terminal states
Step cost: the cost of an action is zero.
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Artificial Intelligence - Adversarial Search
1. Consider the following three variants of minimax search: the simple version, alpha-beta search, anddepth-limited search, and consider the games of tic-tac-toe and chess. For the chess game, supposethat the Threefold Repetition Rule and the Fifty-Move Rule, and the similar rules if any, are notconsidered, i.e., the game will not terminate if the same position occurs multiple times. For eachcombination of minimax variant and game, answer the following question: can that minimax variantpossibly never terminate, in computing the best next move? Justify your answer.
Chapter 5 Solutions
Artificial Intelligence: A Modern Approach
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