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

Jewel polishing, Byteland county is very famous for luminous jewels. Lumino...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

Name of all sap databases, All SAP Databases are Relational Databases ...

All SAP Databases are Relational Databases is the all sap databases.

Explain circular dependencies, Explain Circular Dependencies. Circul...

Explain Circular Dependencies. Circular Dependencies: To know the problem of circular dependencies consider a file server which uses a timeserver to acquire the current

Significance of xml in edi and electronic commerce, What is the significanc...

What is the significance of XML in EDI and electronic commerce?   XML has been defined as lightweight SGML XML shows great promise for its inherent ability to permit a " doc

Comparison between motorola processors and intel processors, Comparison bet...

Comparison between Motorola processors and INTEL processors: Intel/AMD processors are really about the same thing.  They run the same software and operate in a very similar ma

Explain the multiple bus organization structure, Explain the multiple bus o...

Explain the multiple bus organization structure with neat diagram. The multiple bus organization is using more buses instead of one bus to decrease the number of steps needed an

Central processing unit - computer architecture, Central processing unit (C...

Central processing unit (CPU) : The part of the computer which executes program instructions is known as the processor or central processing unit (CPU). CPU is over single ele

What is microfilm, What is microfilm? This is a photographic reproducti...

What is microfilm? This is a photographic reproduction of a document greatly decreased in size from the original on fine grain, high resolution film. Microfilm needs a reader f

Write the truth table and simplify karnaugh map, For F = A.B.C + B.C.D ...

For F = A.B.C + B.C.D ‾ + A‾.B.C ,  write  the  truth  table and simplify using Karnaugh map . And. Simplification of Logic Function F = A B C + B C‾ D + A‾ B C. Therefore the

101-key enhanced keyboard, With its newer range of PCs IBM introduced 101-k...

With its newer range of PCs IBM introduced 101-key Enhanced/Advanced keyboard.  This keyboard is fundamental keyboard behind modern QWERTY keyboards. This has function keys aligned

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