Uniform Cost Search Algorithm

MajesticJudgment avatar
MajesticJudgment
·
·
Download

Start Quiz

Study Flashcards

8 Questions

In Uniform Cost Search, how are nodes in the OPEN list sorted?

By their $g(.)$ values in ascending order

What type of information does Informed (Heuristic) Search use to reduce the search tree?

Problem-specific information

What is the key idea behind Best-First Search?

Use an evaluation function $f(n)$ for node $n$ and choose the node from fringe with the lowest $f$ value

What type of search becomes similar to Breadth-First Search when all arcs have the same cost?

Uniform Cost Search

What is the termination condition for Uniform-Cost Search?

Terminate if a node selected for expansion is a goal

What is the key difference between Uniform Cost Search and Best-First Search?

Uniform Cost Search always selects the node with the lowest g(n) value, while Best-First Search uses an evaluation function f(n) to choose the node with the lowest f value.

In Uniform Cost Search, how are nodes in the OPEN list sorted?

Nodes in OPEN are sorted by their g(.) values in ascending order.

What type of search becomes similar to Breadth-First Search when all arcs have the same cost?

Uniform Cost Search

Study Notes

Uniform Cost Search

  • In Uniform Cost Search, nodes in the OPEN list are sorted by their path cost (g(n)) from the initial state to the node.
  • The termination condition for Uniform-Cost Search is when the goal node is reached.

Best-First Search

  • The key idea behind Best-First Search is that the node with the lowest estimated total cost (f(n) = g(n) + h(n)) is expanded first.
  • The key difference between Uniform Cost Search and Best-First Search is that Uniform Cost Search uses path cost (g(n)) to guide the search, while Best-First Search uses an estimate of the total cost (f(n)) to guide the search.

Informed (Heuristic) Search

  • Informed (Heuristic) Search uses an estimate of the distance from a node to the goal state (heuristic function h(n)) to reduce the search tree.

Special Case

  • When all arcs have the same cost, Uniform Cost Search becomes similar to Breadth-First Search.

Test your knowledge about Uniform Cost Search, a problem-solving algorithm in artificial intelligence. Learn about selecting nodes for expansion and sorting nodes by their g(n) values.

Make Your Own Quizzes and Flashcards

Convert your notes into interactive study material.

Get started for free
Use Quizgecko on...
Browser
Browser