Siyang Chen A* (pronounced ‘A-star’) is a search algorithm that finds the shortest path between some nodes S and T in a graph. Suppose we want to get to node T, and we are currently at node v.

We can design a heuristic (which makes A* search much faster) by just ignoring the constraint. ... BFS solution of the 15-puzzle expands 54,000,000,000 nodes. A* solution, using the following heuristic, …

Depth-First Search (w/o coloring all expanded states): explore each every possible path at a time avoiding looping and keeping in the memory only the best path discovered so far

Our complexity analysis of the various basic search algorithms has shown that they are unlikely to produce results for slightly more complex problems than we have considered here.

Searching is a step by step method to solve a search-problem in a specified search space. A search problem can have three main factors: . tree or graph. This algorithm searches breadthwise in a tree …

We will start with some background, terminology and basic implementation strategies and then cover four classes of search algorithms, which differ along two dimensions: First, is the difference between …

Heuristic functions are the most common form in which additional knowledge of the problem is passed to the search algorithm. Best-First Search algorithms constitute a large family of algorithms, with …