Question

Differentiate between forward chaining and backward chaining

Answer 1

• Forward chaining starts from the known facts and move forward by applying inference rules to extract more data, until it reaches a goal, while backward chaining starts from the goal, move backward by using inference rules to determine the facts that satisfy or led to the goal.

• Forward chaining is known as the down-up approach, while backward chaining is known as a top-down approach.

• Forward chaining uses breadth-first search strategy, whereas backward chaining uses depth-first search strategy.

• Forward chaining can be used for tasks such as planning, design process monitoring, diagnosis, and classification, while backward chaining can be used for classification and diagnosis functions.