23. On Uniform Cost

INSTRUCTOR NOTE:

Uniform Cost search - expands out equally in all directions, may expend additional effort getting to a fairly direct path to the goal.


Greedy best-first search - expands outward toward locations estimated as closer to the goal. If a direct path is available, expends much less effort than Uniform Cost; however, it does not consider any routes in which it may need to temporarily take a further away path in order to arrive at an overall shorter path.


A* Search - utilizes both of these - will try to optimize with both the shortest path and the goal in mind. We'll see how this works in the next video.