4 Now consider the same search graph with heuristic values given in brackets along the names ofnodes:START10A (5)B(10)3C17)D (0)E (9)1210GOALb) Now use A star search to make a search tree and give the path returned by this searchtechnique. Is the path returned by A star search the path with least cost? If not, glve thereason why A star did not retum the path with least cost in this case? Moreover, can wechange one of the heuristic values, so A star is able to return the path with least cost? Ifyes, then which heuristic value needs to be changed? What should be the new value forthis heuristic?3.3.

The least complex of these calculations, unadulterated extends hubs arranged by their heuristic…

Answered: Now consider the same search graph with…

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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Concept explainers

Eight puzzle problem

The N-puzzle problem contains N tiles (N+1 including empty tiles) where the value of N can be 8, 15, 24, etc. The puzzle is divided into the square root of (N+1) rows and the square root of (N+1) columns. These problems have an initial state or configuration and a goal state or configuration. The puzzle can be solved by shifting the tiles one by one in the empty space. The objective is to place the numbers on the tiles to match the final state using the empty space. The other name for the N-puzzle problem is the sliding puzzle.

Question

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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