Knowledge-BasedExpertSystems.ppt


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Knowledge-puterprogramwhich,withitsassociateddata,,skilfullyandinacost-effectivemanner;-BasedExpertSystemsTheNatureofExpertiseOneviewofhumanexpertiseisthatsomepeoplehavespentsomuchtimesolvingproblemsinoneparticulardomainthatthey‘knowallthereistoknow’(nearly),-BasedExpertSystemsTheNatureofExpertiseThismodelofhumanexpertisethatrelies(a)ondomain-specificknowledgeand(b)experience-‘recognition’-,whenamedicaldoctor,say,examinesapatientorhearswhatthepatienthastosayabouthisorherproblem,-BasedExpertSystemsTheNatureofExpertiseThe‘recognition-based’-goalsanddatasoughttoproveeachofthesub-goals.(Thesub-goalscanbebrokenintofurthersub-goalsandsoonandon).Whileprovingasub-goal,-goalsaresatisfiedthenthekeygoalisdeemedtobesatisfiedandtheproblemsolved!4Knowledge-BasedExpertSystemsPneumoniaExpertSystemConsiderasmallchunkofamedicalexpertsknowledgeaboutdiagnosingpneumoniaandfeverrulepneumonia if ‘thepatienthaschestpain’& ‘thepatienthasafever’& ‘thepatientproducespurulentsputum’ then ‘thepatienthaspneumonia’ rulefever if ‘thepatienthasatemperatureabove100’ then ‘thepatienthasafever’.einawithapatientwiththefollowingsymptoms:‘thepatienthasachestpain’&‘thepatienthasatemperatureabove100’&‘thepatientproducespurulentsputum’Andtheexperthastodeducewhetherornotthepatienthaspneumoni

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  • 时间2020-09-22