Power point presentation expert2/5/2024 is, are, is not, are not are used to assign a symbolic value to a linguistic object.The object and its value are linked by an operator. The antecedent of a rule incorporates two parts: an objectand its value.Structure of antecedents and consequents ANDAdvice is “move away from the ocean”.Multiple consequents are possible, and are connected by conjunctions.A rule can have multiple antecedents joined by the keywords AND (conjunction), OR (disjunction) or a combination of both.Any rule consists of two parts: the IF part, called the antecedent (premise or condition) and the THEN part called the consequent (conclusion or action).Production rules (most commonly used type).Users have to be aware of this possibility.Also, you aren’t taking any medications that are likely to produce these symptoms. Well, you have frequent, intense pain in the temple area, associated with nausea.E.g., Why do you think I have a migraine?.How did you come to that conclusion or diagnosis?.Expert systems provide explanation facilities to display reasoning to users. ![]() Symbols represent facts and rules (i.e.Expert Systems use symbolic reasoning to solve problems.Factsabout the particular situation (e.g.Human expertise typically breaks down into:. ![]() Expert systems apply heuristics to guidethe reasoning process.Often a tradeoff between accuracy and speed.Online application that supports the diagnosis and treatment of infectious diseases.GIDEON Global Infectious Disease and Epidemiology Network DXplainknowledge base (KB) covers ~2400 diseasesand over 5000 clinical findings (signs, symptoms, epidemiologic data, laboratory findings, etc.).Users enter clinical information, then ask DXplain to provide diagnostic decision support.An expert system performs at a human expert level in a narrow and specialized domain.Domain expert: A person who has deep knowledge (in the form of facts and rules) and strong personal experience in a particular domain. ![]()
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