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

Dhcp, how to set up dhcp

how to set up dhcp

Explain the program translation model, Explain the program translation mode...

Explain the program translation model The program translation model makes the execution gap through translating a program written in a programming language, termed as the sou

What is the basic workflow order for color match, Question: (a) What is...

Question: (a) What is the difference between the Color Pass and the Color Replace effects? (b) What is the basic workflow order for Color Match? (c) Explain clearly the

Features of mpi-1, Features of MPI-1 Binding for FORTRAN and C ...

Features of MPI-1 Binding for FORTRAN and C Collective communication Communication domains and Process groups Point-to-point communication Virtual process

How can i make text in a cell display in multiple lines, When entering word...

When entering word into the cell, press Alt-Enter to insert a line break. When you do so, Excel will automatically give text wrapping to the cell. To reformat existing cells s

Visual perception problems, In AI the process of perception is studied ...

In AI the process of perception is studied as a set operations. A visual scene may be encoded by sensors and represented as matrix of intensity values. These are processed b

Set up to use parallel virtual machine, Q. Set up to Use parallel virtual m...

Q. Set up to Use parallel virtual machine? PVM employs two environment variables when starting and running. Each and every PVM user needs to set these two variables to employ P

user to enter the weight, A red and blue car were involved in a head-on co...

A red and blue car were involved in a head-on collision. The red car was at a standstill and the blue car was possibly  speeding. Eye witness video recorded suddenly following the

Turning machine, procedure of turning machine operation on markov algorithm...

procedure of turning machine operation on markov algorithm

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