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

Illustrate fdma and tdma concepts., Mobile Computing 1. What is Wireles...

Mobile Computing 1. What is Wireless Protocol Requirements and also explain in brief medium access control protocol. 2. Illustrate FDMA and TDMA concepts. 3. What are the

Explain the architectural description languages, Explain the Architectural ...

Explain the Architectural description languages Architectural description languages (ACLs) have been developed for the architectural description in analysis and design process

Explain the working of a 2-bit digital comparator, Explain the working of a...

Explain the working of a 2-bit digital comparator with the help of Truth Table. Ans. Digital comparator is a combinational circuit which compares two numbers, A and B; and

What are models and meta models, Model: It is a entire explanation of s...

Model: It is a entire explanation of something (i.e. system). Meta model: It shows the model elements, syntax and semantics of the notation that permits their manipulatio

What are the disadvantages of a vpn implementation, What are the Disadvanta...

What are the Disadvantages of a VPN implementation The greatest disadvantage of a VPN implementation is its non-flexibility to accept unknown locations. VPN works extremely wel

Operations of the web, Operations of the Web mainly depend on hypertext as ...

Operations of the Web mainly depend on hypertext as its means of interacting with users. But what is hypertext? Hypertext as such is the same as regular text that is it can be read

Design principles, The usability and user experience goalsprovidet heintera...

The usability and user experience goalsprovidet heinteraction designer with high-level goals for the interactivep roduct. Thenextissueis how to design a product that satisfies thes

Push and pop, i want flowchart for push, pop in stack element and display s...

i want flowchart for push, pop in stack element and display stack and exit

Explain briefly how firewalls protect network, Explain briefly how firewall...

Explain briefly how firewalls protect network.       A firewall is simply a program or hardware device that filters the information coming by the Internet connection into your

Explain the odd-even transposition algorithm, Q. Explain the odd-even trans...

Q. Explain the odd-even transposition algorithm? The algorithm needs one 'for loop' beginning from I=1 to N it implies that N times and for every value of I, one 'for loop' of

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