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</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</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</p> Signup and view all the answers

    What type of search algorithm is Pure heuristic search?

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

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

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

    What is the goal of Pure heuristic search?

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

    Which algorithm is also known as Greedy search?

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

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

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

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

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

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

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

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

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

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

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

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

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

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