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

GRID COMPUTING, I NEED THE CODES IN MATLAB FOR RESOURCE ALLOCATION IN GRID ...

I NEED THE CODES IN MATLAB FOR RESOURCE ALLOCATION IN GRID COMPUTING

What is the working of domain expert, Q. What is the working of domain expe...

Q. What is the working of domain expert? ANSWER: The domain expert is the person who gives the domain expertise in the form of problem-solving strategies.

How do you perform functional testing under load, Functionality under load ...

Functionality under load can be tested by running various Vusers concurrently. By enhancing the amount of Vusers, we can verify how much load the server can sustain.

Decode the code, how to write mobile keypad program in c++

how to write mobile keypad program in c++

How are the instructions executed and interpreted, Q. How are the instructi...

Q. How are the instructions executed and interpreted? All computers have a Unit which performs arithmetic and logical functions. This Unit is called as Arithmetic and Logic Uni

Operating characteristics for master-slave s-r flip-flop, Define the Operat...

Define the Operating Characteristics for master-slave S-R flip-flop? 1. Propagation Delay Time - is the interval of time required subsequent to an input signal has been applied

Illustrate what is universal law of universal gravitation, Q. Illustrate wh...

Q. Illustrate what is the universal law of universal gravitation? Answer:- Declaration that any particle of matter in the universe attracts any other with a force varying

Symbol for the new euro currency in my spreadsheet, How can I go in the sym...

How can I go in the symbol for the new Euro currency in my spreadsheet? Ans) Microsoft suggestted a new Tahoma font with the Euro symbol.

What are near and far pointers, These days, they're pretty much obsolete; t...

These days, they're pretty much obsolete; they're definitely system-particular. They had to do with 16-bit programming under MS-DOS and perhaps some early on versions of Windows. I

Define entry section and exit section, Define entry section and exit sectio...

Define entry section and exit section. The critical section problem is to design a protocol that the processes can use to cooperate. Every process must request permission to e

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