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

Explain about the flash memories, Explain about the Flash memories Thes...

Explain about the Flash memories These are re-writable non-volatile memories evolved from EEPROM; they are generally connected to the USB port on the computer enabling a user t

Uninformed search strategies - artificial intelligence, Uninformed Search S...

Uninformed Search Strategies: To be able to undertake an unaware search, there is really important that the entire agent needs to know is the primary state, then the possible

E-r diagrams, for ticket reservation in trains for payroll processing for i...

for ticket reservation in trains for payroll processing for insurance database

Functions of an operating system, Question a) In multitasking Operatin...

Question a) In multitasking Operating Systems, there are two kinds of multitasking such as the "Preemptive Multitasking" and the "Cooperative Multitasking". Explain the two me

Full form of ldap, LDAP stands for LDAP- Light weight Directory Access...

LDAP stands for LDAP- Light weight Directory Access Protocol.

Row-major order and column-major order of arrays, Two-dimensional array is ...

Two-dimensional array is represented in memory in following two ways: 1.  Row major representation: To attain this linear representation, the first row of the array is kept in

State and prove any one of the demorgen''s laws, Q. F(x,y,z) = ∑m (4,6,7,8...

Q. F(x,y,z) = ∑m (4,6,7,8)+ ∑d (2,5,11,12) Using K-Map. Q. State and prove any one of the DeMorgen's Laws. Show that these theorems can be extended up to any number of variabl

Determine the example of timescale, Determine the Example of timescale ...

Determine the Example of timescale 'timescale 10ns / 1ps Indicates delays are in 10 nanosecond units with 3 decimal points of precision (1 ps is 1/1000ns which is .001 ns).

E-recruitment system, This project is aimed at developing a web-based and c...

This project is aimed at developing a web-based and central recruitment Process system. this web site is for Fresher candidates who graduated. Some features of this system will be

Operation codes used in assembly instructions, Q. Operation codes used in a...

Q. Operation codes used in assembly instructions? Now let's describe various operation codes needed for this machine so that we can translate High level language instructions t

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