Now consider the same search graph with heuristic values given in brackets along the name nodes: START 3 10 A (5) 8 B(10)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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4
Now consider the same search graph with heuristic values given in brackets along the names of
nodes:
START
10
A (5)
B(10)
3
C17)
D (0)
E (9)
12
10
GOAL
b) Now use A star search to make a search tree and give the path returned by this search
technique. Is the path returned by A star search the path with least cost? If not, glve the
reason why A star did not retum the path with least cost in this case? Moreover, can we
change one of the heuristic values, so A star is able to return the path with least cost? If
yes, then which heuristic value needs to be changed? What should be the new value for
this heuristic?
3.
3.
Transcribed Image Text:Now consider the same search graph with heuristic values given in brackets along the names of nodes: START 10 A (5) B(10) 3 C17) D (0) E (9) 12 10 GOAL b) Now use A star search to make a search tree and give the path returned by this search technique. Is the path returned by A star search the path with least cost? If not, glve the reason why A star did not retum the path with least cost in this case? Moreover, can we change one of the heuristic values, so A star is able to return the path with least cost? If yes, then which heuristic value needs to be changed? What should be the new value for this heuristic? 3. 3.
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