An expert system is a type of artificial intelligence software that uses human knowledge to solve complex problems. It consists of a knowledge base that contains facts and rules, an inference engine that applies logic, a user interface for interaction, and a working memory to solve problems. The document provides examples of expert systems that have been used for air traffic control, power plant monitoring, medical diagnosis, and more. It explains that an expert system captures human expertise in a specific domain and uses it to provide solutions or explanations, similar to a human expert.

1. Expert system and its
components
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2. What is expert….?
An attempt to perform human functions
through machines or devices
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3. What is expert system..?
In artificial intelligence a computer software
that emulates the behavior of human experts
who are solving real world problems
associated with a particular domain of
knowledge (Pig ford & Braur)
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4. Cont…
 Knowledge-based expert systems or simply
expert systems
 An expert system is software that attempts to
reproduce the performance of one or more
human experts, most commonly in a specific
problem (Wikipedia)
 Use human knowledge to solve problems that
normally would require human intelligence
 Represent the expertise knowledge as data
or rules within the computer
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5. Cont…
 Can explains reasoning behind any solutions
it finds
An expert system is a system that employs
human knowledge captured in a computer to
solve problems that ordinarily require human
expertise.(Turban)
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6. Key concept
 Problem solve by applying specific
knowledge rather than specific
techniques.
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7. Artificial Intelligence & Expert System
 Artificial intelligence
The machine doing work as human being
Astro teller:
Artificial intelligence is the science of how to
get machines to do the things as they do in
movies (Transformer)
 Expert system
It is only a part of artificial intelligence
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8. According to Astro Teller
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9. Use of expert system
 Control air traffic (PEO Aviation)
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10. Cont..
 Monitoring (nuclear
plants)
 Weather predictions
 Interpretation speech
 And many more …
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11. Cont….
 Finding solutions
through designing
computer programs
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12. Components of expert system
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13. Explanation
 User
Is consulting with system to get advise
 User interface
The code that control the dialogue between the user and the
system.
 Inference engine
The reason behind a solution provided by this component
(logic)
 Knowledge base
This component consist of facts and rules
 Working storage
The data which specific to a problem being solved.
All these components are consist of device which is called shell.
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14. Example Software
 LITHIAN
Gives advice to archeologists
for examining stone tools.
 Dendral
use to identify the structure of
a chemical compounds first
use in (1965)
 Mycin
It is also another example of
expert system that use in
medical field
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