Expert System IGCSE

What is an Expert System?

• Computer hardware

• Computer software that acts like a human expert

• A search engine

• A collection of facts and rules

What type of advice could an expert system provide in helping to identify items such as plants, animals, rocks, etc.?

• Investment strategies

• Likely identification based on characteristics

• Medical diagnosis

• Financial analysis

Which part of an expert system allows a non-expert user to query the system and receive advice?

• User interface

• Knowledge base

• Inference engine

• Expert module

Which component of an expert system acts like a search engine, examining the knowledge base for information that matches the user's query?

• User interface

• Knowledge base

• Inference engine

• Query processor

What is a characteristic of expert systems that distinguishes them from human experts?

• Ability to easily adapt to new circumstances

• Possession of common sense

• Inability to make mistakes

• Capability to process totally unexpected data

What is a limitation of expert systems mentioned in the notes?

• They have common sense

• They easily adapt to new circumstances

• They cannot process totally unexpected data

• They are always easy to use

Why might expert systems be used in providing financial advice?

• To replace human experts

• To eliminate the need for a knowledge base

• The knowledge base contains data about past financial performance

• They have common sense

In what application would an expert system use characteristics of likely rock formations to provide advice on locations to drill for water or oil?

• Cooking

• Chess strategy

• Medical diagnosis

• Oil/water exploration

In medical diagnosis using an expert system, what serves as the query for the inference engine?

• Medical information

• Symptoms of the patient

• Diagnosis of the patient's illness

• Strategies and moves

What is the purpose of the knowledge base in an expert system?

• To store user queries

• To provide a simple user interface

• To act as a search engine

• To contain facts and rules created by human experts