Question

which of the following is a limitation of an expert system?
a. it takes problem - solving decisions without giving the user an option for feedback.
b. it invariably requires human experts to solve problems.
c. it cannot solve problems in areas such as medical diagnoses or fraud detection.
d. it has little flexibility and no common sense.

Explanation:

Expert systems rely on pre - programmed rules and knowledge bases. They lack the ability to adapt to new, unforeseen situations (little flexibility) and do not possess common - sense reasoning that humans have.

• Option A: Expert systems can often be designed to allow user feedback in some way, for example, in knowledge acquisition or in refining the system's performance.
• Option B: The whole point of an expert system is to codify the knowledge of human experts so that it can solve problems without continuous human expert intervention (although human experts are needed for initial knowledge engineering).
• Option C: Expert systems are used in medical diagnoses (e.g., MYCIN for infectious diseases diagnosis in the past) and fraud detection (analyzing patterns based on expert - defined rules).

Answer:

D. It has little flexibility and no common sense.