# What is BFS in artificial intelligence?

## What is BFS in artificial intelligence?

Breadth-first search (BFS) is an algorithm for searching a tree data structure for a node that satisfies a given property. It starts at the tree root and explores all nodes at the present depth prior to moving on to the nodes at the next depth level.

## What is DFS in artificial intelligence?

Depth-first search (DFS) is an algorithm for traversing or searching tree or graph data structures. The algorithm starts at the root node (selecting some arbitrary node as the root node in the case of a graph) and explores as far as possible along each branch before backtracking. Example: Question.

**Which is better BFS or DFS?**

BFS is better when target is closer to Source. DFS is better when target is far from source. As BFS considers all neighbour so it is not suitable for decision tree used in puzzle games. DFS is more suitable for decision tree.

### What data structures are used for BFS and DFS of a graph?

Answer: Queue is used for BFS. Stack is used for DFS.

### What is DFS used for?

Depth-first search is used in topological sorting, scheduling problems, cycle detection in graphs, and solving puzzles with only one solution, such as a maze or a sudoku puzzle. Other applications involve analyzing networks, for example, testing if a graph is bipartite.

**Which is optimal BFS or DFS?**

Answer: If a search algorithm is optimal, then when it finds a solution it finds the best solution. What are the advantages of breadth-first search (BFS) over depth-first search (DFS)? Answer: BFS is complete and optimal, while DFS is not guaranteed to halt when there are loops.

#### How does BFS algorithm work?

BFS selects a single node (initial or source point) in a graph and then visits all the nodes adjacent to the selected node. BFS accesses these nodes one by one. The visited and marked data is placed in a queue by BFS. A queue works on a first in first out basis.