Uniform Cost Search vs. BFS Algorithm: What's the Difference?

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Questions and Answers

What is Depth-First Search (DFS) algorithm used for?

Calculating time and space complexity

Maintaining a frontier list

Traversing or searching tree or graph data structures (correct)

Finding the shortest path in a graph

When using Depth-First Search (DFS), where does the algorithm start exploring from?

Goal node

Node with the most children

Arbitrary node selected as the root node (correct)

Node with the shortest path

What is a limitation of Depth-Limited Search (DLS)?

Difficulty in implementing frontier lists

Inability to handle infinite path lengths (correct)

Low time complexity

High memory usage

Which traversal strategy does Depth-First Search (DFS) follow?

Depth-First Traversal Signup and view all the answers

When is Uniform Cost search equivalent to BFS algorithm?

When all edges have the same path cost Signup and view all the answers

What is a characteristic of Uniform Cost search that makes it different from Depth-First Search?

Maintains a frontier list Signup and view all the answers

What is the defining characteristic of an uninformed search algorithm?

It searches without any information about the search space Signup and view all the answers

Which search strategy is known for searching breadthwise in a tree or graph?

Breadth-First Search Signup and view all the answers

What data structure is typically used to implement Breadth-First Search?

FIFO Queue Signup and view all the answers

What is a limitation of Depth Limited Search (DLS)?

It does not guarantee finding the optimal solution Signup and view all the answers

In the context of search algorithms, what does DFS stand for?

Depth-First Search Signup and view all the answers

Which search algorithm examines each node until it reaches the goal node?

Depth Limited Search Signup and view all the answers

What is one of the best algorithms used to find neighboring locations in GPS Navigation systems?

Breadth-First Search Signup and view all the answers

In an unweighted graph, what is the idea behind calculating the shortest path?

Choosing a path with the least number of edges Signup and view all the answers

Which type of search algorithm is used for traversing a weighted tree or graph where each edge has a different cost?

Uniform Cost Search Signup and view all the answers

What is the primary goal of Uniform Cost Search?

To find a path with the lowest cumulative cost Signup and view all the answers

How does Breadth-First Search decide which nodes to expand first?

By giving priority to nodes with the lowest number of edges Signup and view all the answers

Which algorithm gives maximum priority to the lowest cumulative cost when expanding nodes?

Uniform Cost Search Signup and view all the answers

Study Notes

Search Algorithms

Depth-First Search (DFS)

DFS is used to traverse or search tree or graph data structures
DFS starts exploring from the root node (or an arbitrary node of a graph, sometimes referred to as a 'search key')
It follows a traversal strategy of exploring as far as possible along each branch before backtracking

Uniform Cost Search

Uniform Cost search is equivalent to BFS algorithm when the cost of moving from node to node is the same
Characteristic that makes Uniform Cost search different from DFS: it takes into account the cost of moving from node to node
Primary goal: find the shortest path to the goal node by minimizing the total cost
Gives maximum priority to the lowest cumulative cost when expanding nodes

Breadth-First Search (BFS)

Searches breadthwise in a tree or graph
Typically implemented using a queue data structure
Decides which nodes to expand first based on their level (nodes at the current level are explored before moving to the next level)

Uninformed Search Algorithm

Defining characteristic: doesn't use any additional information about the problem, making it blind to the goal
Examples: DFS, BFS, Uniform Cost Search

One of the best algorithms used to find neighboring locations is Uniform Cost Search

Graph Traversal

In an unweighted graph, the idea behind calculating the shortest path is to find the path with the fewest number of edges
In a weighted graph, a search algorithm that takes into account the cost of each edge, such as Uniform Cost Search, is used

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Description

Learn about the equivalence between Uniform Cost Search and BFS algorithm when the path cost of all edges is the same. Explore examples, algorithms, working principles, and implementations of Uniform Cost Search. Understand its time complexity and space complexity.