Expert System

Expert system and its components

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What is expert….? An attempt to perform human functions through machines or devices

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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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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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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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Key concept

Problem solve by applying specific knowledge rather than specific techniques.

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Artificial Intelligence & Expert System Artificial intelligence

The machine doing work as human beingAstro teller:

Artificial intelligence is the science of how to get machines to do the things as they do in movies (Transformer)

Expert systemIt is only a part of artificial intelligence

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According to Astro Teller

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Use of expert system

Control air traffic (PEO Aviation)

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Cont..

Monitoring (nuclear plants)

Weather predictions

Interpretation speech

And many more …

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Cont….

Finding solutions through designing computer programs

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Components of expert system

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Explanation

UserIs 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 baseThis component consist of facts and rules

Working storageThe data which specific to a problem being solved.

All these components are consist of device which is called shell.

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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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