Question: This exercise explores why heuristic functions used in a graph - search A * have to be consistent. Recall that in a graph - search

This exercise explores why heuristic functions used in a graph-search A* have to be consistent. Recall that in a graph-search method, newly-created search tree nodes with a state that has appeared before will be dropped, wheres in a tree-search method, search tree nodes are allowed to have identical states, leading to redundant paths. (The authors of the textbook

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