1. A search strategy which uses both backward and forward chaining during a single processing of a knowledge base.

2. The automated geometry reasoning system based-on forward chaining is used as the reasoning engine in the intelligent geometry teaching system.

3. The inference engine was composed of forward chaining and backward chaining.

4. Finally, the diagnosis results are achieved through forward chaining method.

5. The engine produced a simple forward chaining while calculating the probabilities of each deduction, which made him unable to explain the logic of its operation and to detect contradictions.

6. The system is a rule-based production system. Inference engine is the core part of expert system. We use forward chaining and backward chaining at the same time.

7. The inference engine is an object which performs the inference operation of object_ framework knowledge using forward chaining strategy.