Artificial Intelligence - Old Questions

3.  How can you construct expert system? Explain knowledge engineering with a block diagram.

An expert system is a set of program that manipulate encoded knowledge to solve problem in a specialized domain that normally requires human expertise.

We can construct expert system using given steps as below:

Knowledge Engineering

Knowledge engineering is a field of AI that creates rules to apply data in order to initiate the thought process of human expert. Knowledge engineering attempts to take challenges and solve problems that would usually require a high level of human expertise to solve.

In general, knowledge engineering is the process of understanding and representing a human knowledge in a computer as a program. Knowledge engineering includes:

1) Knowledge acquisition

2) Knowledge representation

3) Knowledge validation

4) Inferencing

5) Explanation and justification

            The interaction between these stages and source of knowledge is shown in the figure below: