Does this type of system have a high coincidence factor? If so, why is that helpful?

In the heart disease diagnosis case study (Application Case 11.4, on pp. 486-87), what was a major benefit of the SIPMES expert system?  Does this type of system have a high coincidence factor? If so, why is that helpful?

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Expound on these activities within knowledge engineering –   knowledge acquisition, knowledge representation, and knowledge validation…

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The key to effective knowledge management is extracting and encoding expert knowledge that can be accessed and reused by others. Offer an example/application of this, a related benefit, and are there any disadvantages of using KM?

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