1. 2. 1 11 12 13 23456 7891) 2 3 4 5 6 7 8 9 10 Formulate the task as a search problem by defining the following: a state, the goal state and the moves (actions). Draw the first three levels of the state space with the initial state shown in the figure below (start state B) as the first level. Do not include repeating states. 11 12 13 (7) 2 3 5681 1 2 3 4 5 6 7 8 9 10 3. Use the Displaced Soldiers heuristic: the number of soldiers that are not in their correct cells in any state. For example, the heuristic value of state A is 1 and of state B is 9.

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
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Please help with q2 and 3 please
Nine Little Soldiers is a puzzle in which 9 numbered soldiers are trapped in a bomb shelter that
has 13 cells as shown in the figure below. A cell's number is shown either below or above the
cell, and the soldiers are identified by the numbers inside a circle.
A soldier may only move into an adjacent empty cell and no more than one soldier may occupy a
single cell. The puzzle requires you to move the soldiers so that soldier ① is in cell number 1,
soldier in cell number 2, and so on up to soldier: C②CDC in cell number 9.
The figure below depicts start state A.
11
12
13
(N
2
34567891
1 2 3 4 5 6 7 8 9 10
Formulate the task as a search problem by defining the following: a state, the goal state and
the moves (actions).
2. Draw the first three levels of the state space with the initial state shown in the figure below
(start state B) as the first level. Do not include repeating states.
11
1
12
13
⑦
235689
1 2 3 4 5 6 7 8 9 10
3. Use the Displaced Soldiers heuristic: the number of soldiers that are not in their correct cells
in any state. For example, the heuristic value of state A is 1 and of state B is 9.
Indicate the heuristic value for each state in your drawing for question 2. Show the values on
the same drawing, i.e. you do not need to redraw the partial state space.
Transcribed Image Text:Nine Little Soldiers is a puzzle in which 9 numbered soldiers are trapped in a bomb shelter that has 13 cells as shown in the figure below. A cell's number is shown either below or above the cell, and the soldiers are identified by the numbers inside a circle. A soldier may only move into an adjacent empty cell and no more than one soldier may occupy a single cell. The puzzle requires you to move the soldiers so that soldier ① is in cell number 1, soldier in cell number 2, and so on up to soldier: C②CDC in cell number 9. The figure below depicts start state A. 11 12 13 (N 2 34567891 1 2 3 4 5 6 7 8 9 10 Formulate the task as a search problem by defining the following: a state, the goal state and the moves (actions). 2. Draw the first three levels of the state space with the initial state shown in the figure below (start state B) as the first level. Do not include repeating states. 11 1 12 13 ⑦ 235689 1 2 3 4 5 6 7 8 9 10 3. Use the Displaced Soldiers heuristic: the number of soldiers that are not in their correct cells in any state. For example, the heuristic value of state A is 1 and of state B is 9. Indicate the heuristic value for each state in your drawing for question 2. Show the values on the same drawing, i.e. you do not need to redraw the partial state space.
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