[amp_mcq option1=”Postconditions” option2=”Preconditions” option3=”Effects” option4=”Both Preconditions & Effects” correct=”option4″]
The correct answer is: D. Both Preconditions & Effects
State-space search is a problem-solving technique that involves searching through a space of possible states to find a goal state. The search algorithm takes into account the preconditions and effects of actions to determine which states are reachable from the current state and which states are goal states.
Preconditions are the conditions that must be met in order for an action to be performed. Effects are the changes that occur in the state of the world when an action is performed.
For example, the action of “moving a block” might have the following preconditions:
- The block must be on the ground.
- The block must be within reach of the agent.
The action of “moving a block” might have the following effects:
- The block will no longer be on the ground.
- The block will be in the new location.
The state-space search algorithm will use the preconditions and effects of actions to determine which states are reachable from the current state and which states are goal states. For example, if the current state is “the block is on the ground” and the goal state is “the block is on the table,” then the state-space search algorithm will consider the action of “moving the block.” The preconditions of this action are met, so the state-space search algorithm will add the state “the block is on the table” to the list of reachable states.
The state-space search algorithm will continue to search through the space of possible states until it finds a goal state. If the goal state is not reachable, then the state-space search algorithm will return failure.