Artificial Intelligence MCQ
To overcome the need to backtrack in constraint satisfaction problem can be eliminated by __________
Constraint Propagation
Backtrack after a forward search
Local Beam search
Forward Searching

Correct Answer : Option (D) :   Forward Searching

Explanation : Forward Searching is technique in which a forward check till k steps is made to analyze that the goal can be achieved satiating all constraints. With constraint propagation, constraints on a variable can be propagated to next level/hierarchy and satisfied at that level, eliminating need to backtrack.