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

Describe about digital audio tape, Q. Describe about Digital Audio Tape? ...

Q. Describe about Digital Audio Tape? The most proper tape for backing up data from a disk today is Digital Audio Tape (DAT). It employs a 4mm tape covered in a cartridge. It e

Explain time sharing operating system, Explain Time sharing operating syste...

Explain Time sharing operating system. Time sharing: It is also called as multi tasking, is a logical execution of multiprogramming. Multiple jobs are executed through the C

Array to be sorted is partitioned again and again, The sorting method where...

The sorting method where array to be sorted is partitioned again and again in such a way that all elements less than or equivalent to partitioning element appear before it and thos

What are the advantages of hierarchical networks, What are the advantages o...

What are the advantages of Hierarchical Networks? Hierarchical networks are able of handling heavy traffic where needed, and at similar time use minimal number of trunk groups

Define a gate fix asic-based design in short, Define a Gate Fix ASIC-based ...

Define a Gate Fix ASIC-based design in short. Gate Fix ASIC-based design: A Gate Fix implies that a select number of gates and their interconnections may be subtracted or ad

E-R DIAGRAM, In academic year a researcher can either be employed as a prof...

In academic year a researcher can either be employed as a professor or a lab assistant.there are three kinds of professors: assistant,associate and full professors.drow E-R DIAGRAM

Explain routing tone in strowger telephony, Explain routing tone in strowge...

Explain routing tone in strowger telephony with waveforms and the timings. The call-in-progress tone or routing tone is a 400 Hz or 800 Hz intermittent pattern. In electromec

Or-introduction rule, Or-Introduction : Thus if we know about one thin...

Or-Introduction : Thus if we know about one thing is true, and also we know that a sentence when there thing is in a disjunction is true. Here if we consider example, like we

What is the cih, CIH, also known  as Chernobyl or Spacefiller, is a Microso...

CIH, also known  as Chernobyl or Spacefiller, is a Microsoft Windows computer virus which first emerged in 1998. It is one of the most damaging viruses, overwriting critical inform

Storing a word in memory - computer architecture, Storing a word in Memory:...

Storing a word in Memory: That is similar process with fetching a word from memory. The required address is loaded into the MAR After that data to be written are lo

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