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Rule-Based Expert Systems

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Questions and Answers

What is the primary function of the knowledge base in an expert system?

To store facts used to match against rules

To provide a set of rules for problem solving (correct)

To execute actions based on satisfied conditions

To specify relations and recommendations

What is the structure of each rule in a rule-based expert system?

WHERE (condition) RESULT (action)

WHEN (condition) DO (action)

IF (action) THEN (condition)

IF (condition) THEN (action) (correct)

What happens when the condition part of a rule is satisfied?

The rule is stored in the database for future use

The rule is said to fire and the action part is executed (correct)

The rule is modified to fit new conditions

The rule is deleted from the knowledge base

What is the primary function of the database in an expert system?

<p>To provide a set of facts used to match against rules</p> Signup and view all the answers

What is the purpose of the IF (condition) part of a rule in a rule-based expert system?

<p>To match against facts in the database</p> Signup and view all the answers

Study Notes

Expert Systems

A knowledge base in an expert system contains domain knowledge useful for problem-solving.

Representation of Knowledge

In a rule-based expert system, knowledge is represented as a set of rules.
Each rule has an IF (condition) THEN (action) structure.

Rule Firing

When the condition part of a rule is satisfied, the rule is said to fire.
When a rule fires, the action part is executed.

Database

The database includes a set of facts.
The facts in the database are used to match against the IF (condition) parts of rules stored in the knowledge base.

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Description

This quiz covers the basics of rule-based expert systems, including the knowledge base, rule representation, and firing mechanisms.