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

What is the main advantage of IDS over BFS?

<p>IDS is faster than BFS (C)</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 (D)</p> Signup and view all the answers

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

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

What is the optimal strategy for searching?

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

Why may DFS not always give an optimal solution?

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

What is the characteristic of Uniform Cost Search?

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

How does Uniform Cost Search queue nodes?

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

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

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

What is the time complexity of Iterative Deepening Search?

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

How does Iterative Deepening Search achieve its efficiency?

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

What is the completeness of Iterative Deepening Search?

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

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

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

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