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

How to reduce the maximum quantization error, In successive-approximation A...

In successive-approximation A/D converter, offset voltage equal to 1/2 LSB is added to the D/A converter's output. This is done to ? Ans. It is done to reduce the maximum quantiz

What is meant by latch, Latch is a D- type flip-flop used as a temporary st...

Latch is a D- type flip-flop used as a temporary storage device controlled by a timing signal, which can kept 0 or 1. The primary function of a Latch is data storage. It is used in

What are set up time & hold time constraints, What do they signify Which on...

What do they signify Which one is critical for calculating maximum clock frequency of a circuit? Ans) Set up time constraint implies how late the input signal can arrive befor

Define parity generator, Define parity generator During transmission, a...

Define parity generator During transmission, at sending end the message is applied to a parity generator, where the needed bit is formed.

What is telnet explain, Q. What is Telnet explain? TELNET stands for TE...

Q. What is Telnet explain? TELNET stands for TErminal NETwork. Telnet is both a protocol for connecting a local computer to a remote computer and a TCP/IP application. Telnet i

Define bcd, Define BCD. A binary code that distinguishes between 10 ele...

Define BCD. A binary code that distinguishes between 10 elements must contain at least 4 bits, but 6 combinations will remain unassigned. Numerous dissimilar codes can be obtai

Researching strategy - artificial intelligence, Researching strategy - arti...

Researching strategy - artificial intelligence: If our search and researching strategy and swot of it is surety to find all types of hints such the solutions eventually, then

Operator, write algorithm and draw flowchart for exchange the values of two...

write algorithm and draw flowchart for exchange the values of two variables.

What is sap luw or update transaction, What is SAP LUW or Update Transactio...

What is SAP LUW or Update Transaction? Update transaction (or "SAP LUW") This is a set of updates terminated by an ABAP/4 commit.  A SAP LUW may last much longer than a data

Explain the term confidentiality - firewall design policy, Explain the term...

Explain the term Confidentiality - Firewall Design Policy Whilst some corporate data is for public consumption, the vast majority of it should remain private.

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