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A* Search Algorithm: Artificial Intellegence - Assignment Example

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Summary

The author examines A* Search, an uninformed search method which in similarity with the best-search method uses a heuristic function. The A* search uses a heuristic function that is a distance-plus-cost which in turn is a sum of a path-cost function (g(x) which may not necessarily be heuristic. …

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A* Search Algorithm: Artificial Intellegence

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Subject: Information Technology
Type: Assignment
Level: College
Pages: 1 (250 words)
Downloads: 6
Author: jazmynewindler

Extract of sample "A* Search Algorithm: Artificial Intellegence"

A heuristic resembles an algorithm except that it has a difference of a key. A heuristic is a rule of thumb that can be of help in order to solve a given problem. It considers the knowledge of the problem to aid the search process. (Jones, 2008) and aims at minimizing the number of nodes. An admissible function is a function that is a lowest-cost path to the target or in other words, a heuristic is admissible if it does not overestimate the cost (Russell & Norvig, 2002). It is the path evaluation function that A* uses to choose suitable paths through the search space (Copin, 2004).

The other functions are consistent heuristic function and the incremental heuristic search. While former, solve problems without taking any step back, the later approaches solution by reusing previous searches’ information to pace.

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