Expert systems are expensive and time consuming to maintain because:
A)their rule base is so complex.
B)they rely on equipment that becomes outdated.
C)their rules must be reprogrammed every time there is a change in the environment,which in turn may change the applicable rules.
D)only the person who created the system knows exactly how it works,and may not be available when changes are needed.
E)it is difficult to program at this level of complexity without introducing software bugs.

Question

Quizplus · Accepted Answer

Expert systems rely heavily on their rule base, which must be regularly updated and reprogrammed to account for changes in the environment. This maintenance can be lengthy and costly. Outdated equipment and the complexity of programming at this level may also contribute to the expense and time required for expert system maintenance, but these factors are not as significant as the need to update and reprogram rules. The issue of the creator being unavailable is also a potential challenge, but it is not unique to expert systems and can be resolved by documenting the system's design and functionality.

Expert Systems Are Expensive and Time Consuming to Maintain Because