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Bookmark or Share- What are the differences between A* and greedy best-first search?However, A* needs to keep all nodes in memory while searching, not just the ones in the fringe, because A*, essentially, performs an "exhaustive search" (which is "informed", in the sense that it uses a heuristic function).
- Understanding the proof that A* search is optimalStack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- How does the uniform-cost search algorithm work?Uniform Cost Search is also called the Cheapest First Search. For an example and entire explanation you can directly go to this link: Udacity - Uniform Cost Search.
- What is the space complexity of breadth-first search?Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- Why is A* optimal if the heuristic function is admissible?The tree search does not remember which states it has already visited, only the "fringe" of states it hasn't visited yet. A graph search is a general search strategy for searching graph-structured problems, where it's possible to double back to an earlier state, like in chess (e.g. both players can just move their kings back and forth).
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