4. A*

Applying Various Search Strategies to a State Space Assume that you have the following search graph, where S is the start node and G1 and G2 are goal nodes. Ares are labeled with the cost of traversing them and the estimated cost to a goal is reported inside nodes. Apply the search strategies listed below to the search graph:, (a) indicate which goal state is reached if any, (b) list, in order, the states expanded, and (c) show the final contents of the OPEN and CLOSED lists. (Recall that a state is expanded when it is removed from the OPEN list.) When there is a tie with respect to which node has to be expanded next, nodes should be expanded in alphabetical order. The used search strategies include; 1. breadth-first 2. depth-first 3. best-first (using S = h) 4. A* (usingfg+h) 5. SMA* (usingf-gth and limiting the open-list to just 3 elements) KEY x cost of itayetsing this atc is X castigated cost to heatest goal is Y