Subject
Computer Science
Topic
Artificial Intelligence
In alpha-beta pruning, what do alpha and beta represent?
In alpha-beta pruning, what do alpha and beta represent?
a)
Alpha is the best value for MIN; beta is the best value for MAXb)
Both are the depth of the treec)
Alpha is the best value found so far for MAX; beta is the best value found so far for MINd)
Both are random values used for tie-breakingExplanation
Alpha is a lower bound MAX can already guarantee; beta is an upper bound MIN can already guarantee. A branch is pruned when alpha ≥ beta.Related questions
In the figure, a complete binary game tree lists terminal values left-to-right as 3,12,8,2,4,6,14,5. If the root is MAX, what is its minimax value?During alpha-beta search, a MIN node obtains a value no greater than current alpha. What is safe?Two move orders examine the same fixed game tree with alpha-beta pruning. What remains unchanged?Which ordering usually improves alpha-beta pruning?With left-to-right alpha-beta search on a full binary tree whose leaves are 8,7,6,5,1,2,3,4, how many leaf evaluations are pruned?With left-to-right alpha-beta search on a full binary tree whose leaves are 4,3,2,1,8,7,6,5, how many leaf evaluations are pruned?A game contains chance events such as dice rolls. Which extension of minimax is appropriate?To which depth can alpha-beta pruning be applied?