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An Expert System MYCIN
Definition of Expert System ,[object Object],[object Object]
What is: ,[object Object],[object Object],[object Object],[object Object]
Distinction Between an Expert System and a Knowledge-Based System ,[object Object],[object Object]
Rule-Based Expert Systems: Suitable Domains ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MYCIN: The Problem ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Design Parameter ,[object Object],[object Object],[object Object],[object Object],[object Object]
System Components ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Expert System Structure User Interface Environment Language/Shell Explanation Facility Inference Engine Knowledge Base Blackboard
Stages in Diagnosis and Treatment ,[object Object],[object Object],[object Object],[object Object]
A MYCIN Runtime Example
The MYCIN Architecture Consultation program Explanation program Knowledge-acquisition program Dynamic patient data Static factual & judgmental knowledge Physician user Infectious diseases expert
A Sample Context Tree
Rule Grammar ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
English Rule ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Knowledge Base ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Static Data Structures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Dynamic Data Structures ,[object Object],[object Object],[object Object],[object Object]
Control Structure ,[object Object],[object Object],[object Object]
Inference Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Goal Rule ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Consultation Procedure ,[object Object],[object Object],[object Object],[object Object]
Mutually Recursive Procedures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mycin Rules ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Explanation System ,[object Object],[object Object],[object Object],[object Object]
Rule Acquisition System ,[object Object],[object Object],[object Object]
Evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object]
The Rule Interpreter ,[object Object],[object Object],[object Object],[object Object],[object Object]
A MYCIN Reasoning Tree
[object Object],[object Object]
The  Monitor  Mechanism
The  FindOut  Mechanism
Certainty Factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Evaluation Method ,[object Object],[object Object],[object Object],[object Object],[object Object]
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]

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Mycin