A* search - artificial intelligence, Computer Engineering

Assignment Help:

A* Search - artificial intelligence:

A* search in the combines is the best parts of uniform cost search, namely the fact that it's optimal and complete, and the other best parts of greedy search, namely its speed. This kind of searching strategy simply combines the path cost function g(n)  and the heuristic function  h(n)  by summing them to form a new heuristic measure f(n): 

f(n) = g(n) + h(n) 

Remembering that g(n) gives the path cost from the start state to state  n and h(n) estimates the path cost from n to a goal state, we see that f(n) estimates the cost of the cheapest solution that passes through n. 

The most important aspect of A* search is that, given only one restriction on h(n), it is possible to prove the search strategy there which is complete and optimal. The restriction to h(n) is that it must all the time underestimate the cost to reach a goal state from n. Such heuristic measures are called admissible. Look at Russell and Norvig for proof that A* search with an admissible heuristic is complete and optimal.


Related Discussions:- A* search - artificial intelligence

What do you mean by inline function, The idea behind inline functions is to...

The idea behind inline functions is to insert the code of a known function at the point where the function is called. If done carefully, this can improve the application's performa

Explain optimizing transformations, Explain optimizing transformations? ...

Explain optimizing transformations? Optimizing transformations: It is a rule for rewriting a segment of a program to enhance its execution efficiency without influencing i

What do you mean by analysis and design, Analysis: Basically, it is the...

Analysis: Basically, it is the process of determining what requirement to be done before how it should be done. In order to accomplish this, the developer shows the existing sy

Explain half-adder with truth-table and logic diagram, What is a half-adder...

What is a half-adder? Explain a half-adder with the help of truth-table and logic diagram. Ans. Half Adder: It is a logic circuit for the addition of two 1-bit numbers is term

Show SNMPs representation in ASN.1 syntax, An SNMP integer whose value is 2...

An SNMP integer whose value is 200 has to be transmitted. Show its representation in ASN.1 syntax. An ASN.1 transfer syntax describes how values of ASN.1 types are unambiguousl

Workflow automation in e-business environment, How do you achieve workflow ...

How do you achieve workflow automation in e-business environment?   In order to run easily, organizations often standardize processes across the organization and encourage user

Rubbers, engineering plastics ,rubbers ,composites

engineering plastics ,rubbers ,composites

Develop website for my party venue- hall rental website, Project Descriptio...

Project Description: I want to prepare website for my party venue where i can post the photos and detail of place along with availability calendar. In future, I buy some more ha

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd