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

Graphics, what is bitmap and pixmap

what is bitmap and pixmap

Drag and drop state numbers and functions in vb, State 0 Source control is ...

State 0 Source control is being dragged with the variety of a target. 1 Out of the variety of a target. 2 One position in the target to one another.

Selecting integerated learning experiences, Q. Selecting integerated learni...

Q. Selecting integerated learning experiences? It is important that we select appropriate experiences for children, more so those that are from the child's world and emerge fro

Flynns categorization, Flynn's Categorization Flynn's Categorization is...

Flynn's Categorization Flynn's Categorization is based on multiplicity of data streams and instruction streams observed by CPU at the time of program execution. Let I s and D

Expalin johnson counter, Write short note on the Johnson counter. Ans:...

Write short note on the Johnson counter. Ans:  Johnson Counter: It is a synchronous counter, where all flip-flops are clocked concurrently and the clock pulses drive the

Performance analysis, In order to calculate the performance of the program,...

In order to calculate the performance of the program, the normal form of analysis of the program is to simply measure the total amount of CPU time needed to implement the various p

Define the public and extrn directives- assembler directives, Define the PU...

Define the PUBLIC and EXTRN directives- Assembler directives PUBLIC and EXTRN directives are very significant to modular programming. PUBLIC used to declare that labels of data

Multi-threaded concurrency programming with threads, Your task is to implem...

Your task is to implement a memory manager that manages page reads and writes from multiple client threads. In the first programming task the memory manager keeps all the pages in

A universal shift register can shift in both the lef, #question.A universal...

#question.A universal shift register can shift in both the left-to-right and right-to-left directions, and it has parallel-load capability. Draw a circuit for such a shift register

Scope of supply chain management consultancy, What are included in scope of...

What are included in scope of Supply Chain Management Consultancy? Supply Chain Management Consultancy's scope is extensive, and classically includes as given here: a. Sales

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