What is backward chaining? Explain with example. - Question & Answer Book

 

Answer: Backward chaining (or backward reasoning) is an inference method taha can be describe as working backward from the goal(s). It is used in automated theorem provers, inference engines, proof assistant and other artificial intelligence applications.

For example, suppose that the goal is to conclude whether Tweety or Fritz is a frog, given information about each of them, and that the rule base contains the following four rules:

An example of Backward Chaining.

1.      IF X croaks and eats flies – Then X is a frog

2.      If X chirps and sings – Then X is a canary

3.      If X is a frog – Then X is green

4.      If X is a canary – Then X is yellow