Lecture 1

Question 1

What is knowledge

Answer 1

Knowledge is a theoretical or practical understanding of a subject or a domain

Question 2

Who are the experts and what should they have?

Answer 2

Those who possess knowledge are called experts.
Deep knowledge
Strong practical experience

Question 3

What is procedural knowledge?

Answer 3

“how to”

Knowledge about how to perform some task

Question 4

What is declarative knowledge?

Answer 4

“what is”

Question 5

What is an expert system

Answer 5

Expert systems are software packages designed to assist humans in situations in which an expert in a specific area is required.

Question 6

What are the major tasks of expert systems

Answer 6

obtain the required knowledge from an expert.
express knowledge as a collection of rules in the form of logical implications (knowledge base).
extract conclusions (reasoning)

Question 7

Define knowledge base?

Answer 7

A set of rules describing knowledge of a specific domain. Rules can have multiple antecedents joined by keywords AND (conjunction), OR (disjunction) or a combination of both.

Question 8

define Inference engine?

Answer 8

carries out the reasoning whereby the expert system reaches a solution. It links the rules given in the knowledge base with the facts provided in the database.

Question 9

define reasoning?

Answer 9

a mechanism for selecting the relevant facts and extracting conclusions from them in a logical way.
Example: Given that the rule ‘If A then B’ and the fact A are both in the knowledge base, then the fact B can be concluded