Which of the following are true and which are false? Explain your answers.

Depthfirst search always expands at least as many nodes as A search with an admissible heuristic.

$h(n)=0$ is an admissible heuristic for the 8puzzle.

A is of no use in robotics because percepts, states, and actions are continuous.

Breadthfirst search is complete even if zero step costs are allowed.

Assume that a rook can move on a chessboard any number of squares in a straight line, vertically or horizontally, but cannot jump over other pieces. Manhattan distance is an admissible heuristic for the problem of moving the rook from square A to square B in the smallest number of moves.
Answer
Improve This Solution
View Answer