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 is the benefit of report wizard over an auto report, What is the benef...

What is the benefit of Report Wizard over an Auto Report? It takes a little more work to make a report with the report wizard than with the Auto Report but you have a lot more

Programming, DADA Electronics makes CD players in 3 processes: programming,...

DADA Electronics makes CD players in 3 processes: programming, and packaging. Direct materials are added at the starting of the assembly process. Conversion costs are incurred even

-bit comparator using combinational logic, Design a 4-bit comparator using ...

Design a 4-bit comparator using combinational logic, and Karnaugh Maps. The inputs of the circuit are two 2-bit numbers. a) Construct the truth table given 2-bits inputs A and B, a

What is the resolution of this DAC, A 5-bit DAC produces an output voltage ...

A 5-bit DAC produces an output voltage of 0.2V for a digital input of 00001. Find the value of the output voltage for an input of 11111. What is the resolution of this DAC? Ans

Which is most general phase structured grammar, Which is most general phase...

Which is most general phase structured grammar? Context – Sensitive is most common phase structured grammar.

Classification of parallel computers , Classification Of Parallel Computer...

Classification Of Parallel Computers  Introduction Parallel computers are those that underline the parallel processing among the operations in some way. In the last unit,

Explain working of telnet, Q. Explain Working of TELNET? The working o...

Q. Explain Working of TELNET? The working of TELNET 1.  Commands and characters are sent to operating system on common server computer. 2.  Local operating system send

How can you pass a struct by reference in e, How can you pass a struct by r...

How can you pass a struct by reference in e?   The question is phrased in a tricky way because passing by reference is the default and only possible way to pass structs in e. I

No. of decimal places for output within a write statement, The no of decima...

The no of decimal places for output can be describes within a write statement. This statement is right. Write:/ decimals 2.

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