Discussion
What does A star expand before finding an optimal solution?
Answer: D
A star must expand all nodes whose estimated total cost is below the optimal, since any of them might lead somewhere better, and may expand some with f equal to it. That is why a better heuristic, which raises f towards the truth for unpromising nodes, prunes so effectively. Depth and reachability are not the criterion, and expanding only the solution path would require a perfect heuristic. Knowing exactly which nodes an algorithm must examine is what allows two heuristics to be compared.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development