In A* search, what role do heuristic functions play in guiding the search process?
- Heuristic functions are applied only to the start node
- Heuristic functions determine the optimal path
- Heuristic functions have no impact on the search process
- Heuristic functions provide an estimate of the remaining cost
Heuristic functions in A* search provide an estimate of the remaining cost from a given node to the goal. This estimate guides the algorithm to prioritize paths that seem more promising in reaching the goal efficiently.
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