ep-costs.  You also know the following heuristic estimates:  h(B->G2) = 9, h(D->G2)=10, h(A->G1)=2, h(C->G1)=1  In what order will A* search visit the nodes? Explain your answer by indicating the value of  the evaluation function for those nodes that the alg

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
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Exercise 6                                                                                            

Consider the search tree at the figure below.  There are 2 goal states, G1 and G2.  The numbers on the edges represent step-costs.  You also know the following heuristic estimates: 

h(B->G2) = 9, h(D->G2)=10, h(A->G1)=2, h(C->G1)=1 

In what order will A* search visit the nodes? Explain your answer by indicating the value of  the evaluation function for those nodes that the algorithm considers. 

 

A
1
9
1
G1
R
20
B
2
D
10
(G2)
Figure 2 - Search Tree
Transcribed Image Text:A 1 9 1 G1 R 20 B 2 D 10 (G2) Figure 2 - Search Tree
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