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Database System Concepts
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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D DE 14 19 A (5) C(10) 20 18 25 S (35) 15 E (50) 0 13 12 в (30) D (26) 12 24 27 Figure 1 Given the search space above, for each search strategy below, show the nodes in the order they are checked for goal. Start from S and stop at E. The number next to the square is estimated cost to E, and the underlined number next to the link is the real cost. If two or more nodes in the fringe (e.g. NODES/OPEN) have the same cost, they are taken off the fringe in alphabetical order. 20 terative deepening depth-first search. S SAB I JABBCDACD SABCDCDCE) Breadth-first search. 54 BBCDACDCD,b CE) JUniform-cost search. SBCP CE) ఈస్తిందిలు A. A 1330 13 В 13CDA CD 13 CE D Best-first search based on the general tree-based search algorithm (i.e. my 1* pseudocode), assuming NO loop-checking or redundancy-avoiding mechanism. SBCA D(E) E Generic best-first search (i.e. my 2nd pseudocode) introduced in class (with OPEN and CLOSED) SBCAD CE)
Transcribed Image Text:D DE 14 19 A (5) C(10) 20 18 25 S (35) 15 E (50) 0 13 12 в (30) D (26) 12 24 27 Figure 1 Given the search space above, for each search strategy below, show the nodes in the order they are checked for goal. Start from S and stop at E. The number next to the square is estimated cost to E, and the underlined number next to the link is the real cost. If two or more nodes in the fringe (e.g. NODES/OPEN) have the same cost, they are taken off the fringe in alphabetical order. 20 terative deepening depth-first search. S SAB I JABBCDACD SABCDCDCE) Breadth-first search. 54 BBCDACDCD,b CE) JUniform-cost search. SBCP CE) ఈస్తిందిలు A. A 1330 13 В 13CDA CD 13 CE D Best-first search based on the general tree-based search algorithm (i.e. my 1* pseudocode), assuming NO loop-checking or redundancy-avoiding mechanism. SBCA D(E) E Generic best-first search (i.e. my 2nd pseudocode) introduced in class (with OPEN and CLOSED) SBCAD CE)
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