Artificial Intelligence: A Modern Approach
Artificial Intelligence: A Modern Approach
3rd Edition
ISBN: 9780136042594
Author: Stuart Russell, Peter Norvig
Publisher: Prentice Hall
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Chapter 4, Problem 6E

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Modifying the AND-OR-GRAPH-SEARCH algorithm:

  • Check the figure S4.2 for the modified algorithm. When the OR-SEARCH cycles back to a state on “path” it returns a token “loop”. This means to loop back to the most recent time this state was reached along the path to it.
  • There is sufficient information for later processing or a modified implementation to replace these with labels since the “path” is implicitly stored in the returned plan...

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