Which of the followings are the reason behind the usage of Expert System?i. To preserve knowledge.ii. To completely replace the human experts. iii. To train new employees.iv. To help in emergency situations.

Question

BlackTom AI · Accepted Answer

Expert systems are designed to capture domain expertise in a knowledge base and apply it via an inference engine, explanation facility and user interface to support decision-making.

Relevant knowledge points:
- Core components: knowledge base (rules/facts), inference engine, explanation module.  
- Typical goals: preserve expert knowledge, provide consistent decisions, serve as tutoring/decision aids, and offer rapid assistance when experts are not available.  
- Limitations: brittleness, inability to handle totally novel situations or full human judgment, legal/ethical constraints — so they augment rather than completely replace humans.

Step‑by‑step evaluation of each statement:
i. To preserve knowledge — True. Expert systems formalize and store expert rules and heuristics, preventing loss of tacit expertise when people leave an organization. This is a primary motivation for building them.
ii. To completely replace the human experts — False. Although expert systems automate tasks, they lack broad common-sense reasoning, adaptability in unforeseen contexts, and the human judgment needed for responsibility and ethics. Thus complete replacement is not an intended or realistic goal.
iii. To train new employees — True. Many expert systems include explanation facilities and tutorial modes that teach reasoning steps and decisions, making them useful for training and onboarding.
iv. To help in emergency situations — True. Expert systems can provide fast, consistent guidance under time pressure (e.g., medical triage support, fault diagnosis), acting as an immediate aid when human experts are unavailable.

Why option c is correct:
Option c (i, iii and iv) includes the three valid reasons and excludes the incorrect claim (ii). Other choices are incorrect because each includes statement ii:  
- a (i and ii) wrongly asserts complete replacement.  
- b (ii, iii and iv) and d (ii and iii) also include the false statement ii.

Conclusion: The correct choice is c. i, iii and iv, which matches the provided answer.

Which of the followings are the reason behind the usage of Expert System?i. To preserve knowledge.ii. To completely replace the human experts. iii. To train new employees.iv. To help in emergency situations.单项选择题

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