Mastering Best-First Search Algorithms

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Questions and Answers

Which of the following accurately describes best-first search?

  • A search algorithm that explores a graph by expanding all nodes simultaneously
  • A search algorithm that explores a graph by expanding the most promising node chosen according to a specified rule (correct)
  • A search algorithm that explores a graph by expanding nodes randomly
  • A search algorithm that explores a graph by expanding nodes in a specific order

What did Judea Pearl describe as the heuristic evaluation function in best-first search?

  • g(n)
  • f(n) + g(n) + h(n)
  • h(n)
  • f(n) (correct)

What is another name for best-first search when it uses a heuristic that attempts to predict how close the end of a path is to a solution?

  • Greedy best-first search (correct)
  • Depth-first search
  • Pure heuristic search
  • A* search algorithm

How is the efficient selection of the current best candidate for extension typically implemented in best-first search?

<p>Using a priority queue (B)</p> Signup and view all the answers

What is the A* search algorithm?

<p>A search algorithm that combines the advantages of both breadth-first search and best-first search (C)</p> Signup and view all the answers

Which list does the Pure heuristic search algorithm use to place nodes that have already been expanded?

<p>CLOSED list (D)</p> Signup and view all the answers

What type of search algorithm is Pure heuristic search?

<p>Uninformed search (D)</p> Signup and view all the answers

Which value is used to expand nodes in Pure heuristic search?

<p>h(n) (B)</p> Signup and view all the answers

What is the goal of Pure heuristic search?

<p>To find any feasible solution (D)</p> Signup and view all the answers

Which algorithm is also known as Greedy search?

<p>Best First Search Algorithm (A)</p> Signup and view all the answers

Which type of search algorithm checks every record in a linear fashion?

<p>Linear search (B)</p> Signup and view all the answers

What is the study of information retrieval that uses search algorithms?

<p>Search engines (B)</p> Signup and view all the answers

Which data structures can make search algorithms faster or more efficient?

<p>All of the above (D)</p> Signup and view all the answers

What are the three types of search algorithms based on their mechanism of searching?

<p>Linear, binary, and hashing (B)</p> Signup and view all the answers

What does the appropriate search algorithm to use often depend on?

<p>All of the above (D)</p> Signup and view all the answers

Which type of search algorithm checks every record in a linear fashion?

<p>Linear search (D)</p> Signup and view all the answers

What is the study of information retrieval that uses search algorithms?

<p>Information retrieval (A)</p> Signup and view all the answers

What does the appropriate search algorithm to use often depend on?

<p>The type of data structure being searched (D)</p> Signup and view all the answers

What are the three types of search algorithms based on their mechanism of searching?

<p>Linear, binary, and hashing (A)</p> Signup and view all the answers

Which data structures can make search algorithms faster or more efficient?

<p>Search trees, hash maps, and database indexes (C)</p> Signup and view all the answers

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