Greedy search - artificial intelligence, Computer Engineering

Assignment Help:

Greedy Search - artificial intelligence:

If we have a heuristic function for states, defined as above, so we can simply measure each state with respect to this measure and order the agenda items in terms of the score of the state in the item. However, at each stage, the agent determines which state scores lowest and puts agenda items on the top of the agenda that contain operators acting on that state. In this way, the most promising nodes in a search space are expanded before the less capable ones. This is a nature of best first search is usually called specifically as a greedy search.

In some situations, a greedy search can lead to a solution very quickly. In fact, a greedy search can often go down blind alleys that look promising to start with, but we don't lead to a solution ultimately. Often the best states at the start of a search are in fact really quite poor in comparison to those further in the search space. One way is to counteract this blind-alley effect is to turn off the heuristic until a proportion of the search space has been covered, that the truly high scoring states can be identified. One more problem with a greedy search is, which the agent will have to keep a record of which states have been explored in order to avoid repetitions and ultimately end up in a cycle, so that's why a greedy search must keep all the agenda items it has undertaken in its memory. And also, this search strategy is not optimal, is sense cause the optimal solution may have nodes on the path that score badly for the heuristic function, and hence a non-optimal solution will be found before an optimal one.


Related Discussions:- Greedy search - artificial intelligence

Over fitting considerations - artificial intelligence, Over fitting Conside...

Over fitting Considerations - artificial intelligence Left  unexamined ,  back  propagation  in  multi-layer  networks  may  be very susceptible  to over fitting itself to the

Write a menu driven program, Q. Write a Menu driven program to convert the...

Q. Write a Menu driven program to convert the given Decimal number into Binary, Octal and Hexadecimal number. (Fractional numbers are allowed)

Is it possible to pass data and include program explicitly, Is it possible ...

Is it possible to pass data to and from include programs explicitly? No.  If it is needed to pass data to and from modules it is needed to use subroutines or function modules.

Determine the bios function with one illustration, Determine the BIOS funct...

Determine the BIOS function with one illustration BIOS stands for Basic Input Output System. It is a set of programs to provide most basic low-level services like services keyb

Explain the outsourcing barriers that an organization faces, Explain the ou...

Explain the outsourcing barriers that an organization faces. 1. Critical operations that cannot be outsourced. 2. Negative customer reaction. 3. Employee resistance. 4

Explain naming convention in arrays, Explanation Arrays in many programm...

Explanation Arrays in many programming-languages generally show a fixed list of values (e.g. a list of lastnames). Though within SQABasic the size for an array can either be fix

Determine a ring counter that consisting of five flip-flops, A ring counter...

A ring counter consisting of five Flip-Flops will have ? Ans. A ring counter have 5 states while consisting of Five Flip-Flops.

Define baud rate, Define baud rate The rate of data transfer in serial...

Define baud rate The rate of data transfer in serial data communication is signified in bps. Bits per second (bps) is the rate of transfer of information bits. Baud is the num

Difference between shadow and override in programming, Overriding tell us o...

Overriding tell us only the methods, but shadowing tells us the entire element.

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