In A* algorithm, if the heuristic function hNo is always zero, what search algorithm does it degenerate into? a. Depth-First Search b. Greedy Best-First Search c. Breadth-First Search d. Uniform Cost Search
Question
In A* algorithm, if the heuristic function hNo is always zero, what search algorithm does it degenerate into?
a. Depth-First Search
b. Greedy Best-First Search
c. Breadth-First Search
d. Uniform Cost Search
Solution
The A* algorithm degenerates into the Uniform Cost Search (d) if the heuristic function hNo is always zero. This is because the A* algorithm becomes a shortest path algorithm, which is what the Uniform Cost Search is. The heuristic function in the A* algorithm is used to estimate the cost from the current node to the goal. If this is always zero, it means that the algorithm does not take into account any information about the goal, and therefore behaves like the Uniform Cost Search, which also does not have any information about the goal.
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