Expert System
Post on 15-Dec-2014
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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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