To overcome the need to backtrack in constraint satisfaction problem can be eliminated by ____________(a) Forward Searching(b) Constraint Propagation(c) Backtrack after a forward search(d) Omitting the constraints and focusing only on goalsThis question was addressed to me by my school teacher while I was bunking the class.The doubt is from Constraints Satisfaction Problems topic in division Problem Solving of Artificial Intelligence

To overcome the need to backtrack in constraint satisfaction problem c

1.	To overcome the need to backtrack in constraint satisfaction problem can be eliminated by ____________(a) Forward Searching(b) Constraint Propagation(c) Backtrack after a forward search(d) Omitting the constraints and focusing only on goalsThis question was addressed to me by my school teacher while I was bunking the class.The doubt is from Constraints Satisfaction Problems topic in division Problem Solving of Artificial Intelligence
Answer» Right answer is (a) Forward Searching Best 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.

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