IDS Search Algorithm
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Questions and Answers

What is the time complexity of the Bidirectional Search algorithm?

  • O(2^bd)
  • O(bd/2) (correct)
  • O(b^d)
  • O(bd)

    • Which of the following is a characteristic of the IDS algorithm?

  • It does not generate nodes at depth d+1 (correct)
  • It is a type of local search
  • It generates nodes at depth d+1
  • It is a type of heuristic search

    • What is the space complexity of the IDS algorithm?

  • O(b^d)
  • O(bd) (correct)
  • O(log bd)
  • O(d)

    • How does the number of nodes generated by IDS compare to BFS for b=10 and d=5?

    <p>IDS generates fewer nodes than BFS</p> Signup and view all the answers

    What is the main advantage of IDS over BFS?

    <p>IDS is faster than BFS</p> Signup and view all the answers

    What is the optimality of the IDS algorithm?

    <p>YES, if path cost is a non-decreasing function of the depth of the node</p> Signup and view all the answers

    What is the time complexity of the number of nodes in memory?

    <p>O(bm)</p> Signup and view all the answers

    What is the optimal strategy for searching?

    <p>Uniform Cost Search</p> Signup and view all the answers

    Why may DFS not always give an optimal solution?

    <p>Because it expands the deepest node first</p> Signup and view all the answers

    What is the characteristic of Uniform Cost Search?

    <p>It only cares about the total cost</p> Signup and view all the answers

    What is the condition for Uniform Cost Search to be complete and optimal?

    <p>If the cost of each step exceeds some positive bound ε</p> Signup and view all the answers

    How does Uniform Cost Search queue nodes?

    <p>By the total cost from the root</p> Signup and view all the answers

    What is the main advantage of Iterative Deepening Search over Breadth-First Search?

    <p>Less memory usage</p> Signup and view all the answers

    What is the time complexity of Iterative Deepening Search?

    <p>Costly due to repeated generation of states</p> Signup and view all the answers

    How does Iterative Deepening Search achieve its efficiency?

    <p>By redoing some computations again and again</p> Signup and view all the answers

    What is the completeness of Iterative Deepening Search?

    <p>YES (no infinite paths)</p> Signup and view all the answers

    How does the number of nodes generated in Iterative Deepening Search change with depth?

    <p>According to the formula: d.b + (d-1).b2 + (d-2).b3 + ………………..+1</p> Signup and view all the answers

    What is the main difference between Iterative Deepening Search and Breadth-First Search?

    <p>Node generation strategy</p> Signup and view all the answers

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