1_uncertainty in kbs
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MMinhat 1
UNCERTAINTY in Knowledge-Based System (KBS)
Nov '15 WK5 MMFS5013
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MMinhat 2Nov '15 WK5 MMFS5013
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MMinhat 3Nov '15 WK5 MMFS5013
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MMinhat 4
Sources of uncertainty
• Lack of/incompleteness of data• Inconsistency of data• Imprecision of measurement• Imprecision of concept• Combination of information from multiple
sources• Lack of fundamental supporting theory
Nov '15 WK5 MMFS5013
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MMinhat 5
Illustration of uncertainty
• Truly random situation (e.g. motion of gas molecules, distribution of people’s height)
• Situation which are not random but for which there are insufficient data (e.g. the likelihood a person has appendices)
• Situation whether the knowledge involved represents an intuitive feeling)
• Situation where the terminology involved is vague (e.g. description such as large, tall, big)
• Situation where the sources of knowledge is not totally reliable (e.g. someone who is honest but absent minded)
Nov '15 WK5 MMFS5013
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MMinhat 6Nov '15 WK5 MMFS5013
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MMinhat 7Nov '15 WK5 MMFS5013
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MMinhat 8Nov '15 WK5 MMFS5013
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MMinhat 9Nov '15 WK5 MMFS5013
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MMinhat 10Nov '15 WK5 MMFS5013
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MMinhat 11Nov '15 WK5 MMFS5013
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MMinhat 12Nov '15 WK5 MMFS5013
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MMinhat 13Nov '15 WK5 MMFS5013
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MMinhat 14Nov '15 WK5 MMFS5013
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MMinhat 15Nov '15 WK5 MMFS5013
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MMinhat 16Nov '15 WK5 MMFS5013
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MMinhat 17Nov '15 WK5 MMFS5013
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MMinhat 18Nov '15 WK5 MMFS5013
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MMinhat 19Nov '15 WK5 MMFS5013
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MMinhat 20Nov '15 WK5 MMFS5013
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MMinhat 21Nov '15 WK5 MMFS5013
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MMinhat 22Nov '15 WK5 MMFS5013
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MMinhat 23Nov '15 WK5 MMFS5013
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MMinhat 24Nov '15 WK5 MMFS5013
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MMinhat 25
Thank You
• Q & As?
Nov '15 WK5 MMFS5013